101. Texas Materials Institute | Superconductors complicated oxide superconductors represents an essential and difficult problem of high quality single crystal samples of the oxide superconductors. http://www.tmi.utexas.edu/research_area_superconductors.shtml

Superconductor materials topics at Texas Materials Institute The discovery of high temperature superconductivity with copper oxide compounds in 1986 resulted in a large amount of scientific research worldwide. During the years since the initial discovery, University of Texas scientists have played a central role in the development of the existing science base in this area. Associated with the TMI are a number of the world's leaders in the area of superconductor research. The processing of reliable, reproducible, and durable superconductor devices and conductors in a cost-effective manner from complicated oxide superconductors represents an essential and difficult problem for materials researchers. Some of the TMI efforts in the area of superconductor research are highlighted below. Development of a reliable materials base The poor material properties associated with these brittle and reactive ceramic compounds have encouraged scientists to continue to search for alternative superconductor materials as well as to find chemically benign processing methods. Careful studies of the structure/reactivity characteristics of cuprate compounds have been completed recently by TMI scientists. Studies focusing on the mechanism of decomposition of high-T c samples have revealed strong coupling between water reactivity, copper redox chemistry and oxide/oxygen evolution/uptake. This new mechanistic knowledge has led TMI faculty to the development of a new materials base that is suitable for the preparation of devices and conductors that exhibit enhanced performance characteristics.

102. Gallery Of Abrikosov Lattices In Superconductors Images of Abrikosov vortices in superconductors. 2003, Nobel prize to AAAbrikosov. for pioneering contribution to the theory of superconductors http://www.fys.uio.no/super/vortex/

Gallery of Abrikosov Lattices in Superconductors Theoretical Prediction of Vortices in Type-II Superconductors A. A. Abrikosov, Institute of Physical Problems, USSR Soviet Physics JETP 5, 1174 (1957) Nobel prize to A. A. Abrikosov for pioneering contribution to the theory of superconductors First image of Vortex lattice, 1967 Bitter Decoration Pb-4at%In rod, 1.1K, 195G U. Essmann and H. Trauble Max-Planck Institute, Stuttgart Physics Letters 24A, 526 (1967) Vortex lattice in high-Tc superconductor, 1987 Bitter Decoration YBa2Cu3O7 crystal, 4.2K, 52G P. L. Gammel et al. Bell Labs Phys. Rev. Lett. 59, 2592 (1987) STM image of Vortex lattice, 1989 Scanning Tunnel Microscopy H. F. Hess et al. Bell Labs Phys. Rev. Lett. 62, 214 (1989) Vortex chains in tilted field, 1991 Bitter Decoration Bi-Sr-Ca-Cu-O crystal, 35G tilted by 70 degrees C. A. Bolle et al. Bell Labs Phys. Rev. Lett. 66, 112 (1991) Imaging Vortex lattice with Lorentz Microscopy, 1992 Lorentz Microscopy Nb film K. Harada et al. Hitachi Lab Nature 360, 51 (1992)

103. Magneto-Optical Imaging Of Superconductors physical principles and applications of magnetooptical imaging for characterizationof superconductors. http://www.fys.uio.no/super/mo/

Magneto-Optical Imaging of Superconductors To be able to see magnetism directly with your eyes has been a very old dream. In a way magneto-optical imaging is the realization of that dream: you stick your sample under the microscope, put a piece of a magic crystal on top of it, and can through the ocular follow the sample's magnetic behaviour in real-time Fundamentals of magneto-optical imaging Physical principles Magneto-optical films Rotation angle vs. magnetic field dependence ... Links Fundamentals of magneto-optical imaging Physical principles The physical idea behind the magneto-optical imaging is the Faraday effect , i.e., rotation of the light polarization induced by magnetic field. On 13 September, 1845, Michael Faraday wrote in his Diary "...magnetic force and light were proved to have relation to each other. This fact will most likely prove exceedingly fertile and of great value in the investigation of both conditions of natural force" Magneto-optical films A number of different materials have been applied as indicators in MO imaging: cerous nitrate-glycerol , various europium compounds (EuS, EuSe) [H. Kirchner, Phys. Lett. 26A, 651 (1968)]

104. Superconductors - Georg Bednorz And Karl Alex In 1986 Müller and Bednorz discovered the first high-temperature superconductor -breathing new life into a dying branch of physics and posing a daunting http://inventors.about.com/od/sstartinventions/a/superconductors.htm

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105. Applied Superconductivity Center: UW-Madison In figure 1 we show a listing of the elemental superconductors with their The superconductors that show this characteristic would come to be know as http://homepages.cae.wisc.edu/~plee/superconductor-history.htm

The Applied Superconductivity Center /Peter J. Lee Research Viewable Publications All Publications Image Gallery Graphs ... Sponsors Other Bio Applied Superconductivity Meetings and Conferences Superconductivity: History Superconductivity: Applications ... Applied Superconductivity Center Superconductivity and Magnetism A Historical Introduction to Superconductivity and Magnetism The Early Years of Superconductivity In the early years of superconductivity, progress to application was slow an intermittent. On the 10 th of July 1908, Heike Kamerlingh Onnes , Professor of Experimental Physics at the University of Leiden Gilles Holst (who had been an assistant at Leiden for two years and would later become the first director of the Philips Research Laboratories ) measured a sudden and massive drop in the electrical resistance. As best as they could measure, in just a few hundredths of a degree the resistance dropped to less than one millionth of the melting point value, and eventually to a thousand millionth of it. In 1912 Onnes termed the new electrical state that the mercury had entered below 4 K, the superconductive state. Having worked so hard to purify the mercury he was further surprised to find that adding gold and cadmium to the mercury did not stop it from entering the superconducting state. He also observed that very high currents could be passed though the mercury until a threshold current density was reached (as high as 1000 A/mm

106. SRI: PSD's Superconductors Ongoing research in superconductors at SRI has resulted in the design, construction,and testing of novel fluidizedbed CVD systems for high rate deposition http://www.sri.com/psd/research/superconductors.html

Physical Sciences Poulter Laboratory - Applied Mechanics Applied Physical Sciences Laboratory Chemical and ... Technologies for License Superconductors Ongoing research in superconductors at SRI has resulted in the design, construction, and testing of novel fluidized-bed CVD systems for high rate deposition of thin films of high-temperature superconductors on wire substrates. SRI's design is less complex to implement and operate and costs less than conventional MOCVD systems. Fluidized-Bed CVD Reactor for Superconductor Deposition Reactor in Use Visit the Laboratory - Technical Contact: Steven Crouch-Baker steven.crouch-baker@sri.com About Us Careers Newsroom ... Contact Us SRI International is an independent, nonprofit corporation.

107. Research Area: Superconductors the electronic structure of the high temperature cuprate superconductors, Fermi Surfaces, Fermi Liquids and High Temperature superconductors, http://cst-www.nrl.navy.mil/ResearchAreas/Superconductors/

Research Area: Superconductors FIG. 1. Three-dimensional picture of the calculated Fermi surfaces of YBa Cu O , slightly broadened and extended periodically. Roughly speaking, the red and green surfaces are derived from the two CuO layers (bonding and antibonding combinations), the pink surfaces arise from the CuO chains, and the smaller blue cylinders contain both layer and chain character. Recent work in the Center is again emphasizing electron-phonon mediated superconductivity, especially in novel materials such as MgB and borocarbides. This results in new understanding of the materials, for example, the prediction of two-gap superconductivity in MgB , as well as suggestions for improved materials, for example, the prediction of still higher critical temperatures in the as yet unsynthesized compound, CuB 2-x C x near x=0.5. The Center also has a significant effort investigating materials with both magnetism and superconductivity, particularly unconventional triplet superconductivity mediated by spin fluctuations, as in Sr RuO and materials near ferromagnetic quantum critical points.

108. Spotlight Superconductors With Split Personalities superconductors with split personalities. New superconductors could emerge fromresearch by American and Japanese physicists who are investigating new http://www.psigate.ac.uk/spotlight/issue5/superconductors.html

109. Emerging Device Technology: Fundamental Studies Of Superconductors At Microwave Emerging Device Technology at the University of Birmingham. http://www.edt.bham.ac.uk/supermwf.htm

Emerging Device Technology: Fundamental Studies of Superconductors at Microwave Frequencies University Fast Find Site Index Schools / Departments Telephone Directory Email Directory Useful Contacts Frequently Asked Questions Directions / Maps Acronym Directory Vacancies EMERGING DEVICE TECHNOLOGY: FUNDAMENTAL STUDIES OF SUPERCONDUCTORS AT MICROWAVE FREQUENCIES For: Emerging Device Technology Welcome Introduction People Contact Us Facilities The EDT Centre Manufacturing and Device Fabrication Opportunities For Study For Business Research Areas Delay Line Filters Delay Lines Ferroelectirc Materials HTS Coplanar Left-Handed Transmission Lines and Resonators ... Thick Film Ferroelectric Phase Shifters SEARCH THIS SITE SEARCH WHOLE UNIVERSITY School of Engineering Emerging Device Technology Research Centre The Physics of Superconductors at Microwave Frequencies Measurements of the microwave properties of superconductors has been going on for over a decade in the EDT research centre. The objectives of the work are three fold, to enhance our understanding of superconductors, to optimise the superconducting for low loss and to provide information to microwave device designers on the properties. Measurements have taken place on thin and thick film materials, single crystals and bulk polycrystalline specimens. All have helped in meeting the three objectives of the work.

110. Superconductors Question How do superconductors work and what are some current developments inthe field of You should try looking up superconductors in the library. http://www.newton.dep.anl.gov/askasci/phy99/phy99134.htm

Ask A Scientist Physics Archive Superconductors Back to Physics Ask A Scientist Index NEWTON Homepage ... NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators. Argonne National Laboratory, Division of Educational Programs, Harold Myron, Ph. D., Division Director. n b

111. Elsevier.com - Materials And Mechanisms Of Superconductivity Phasesensitive tests of pairing symmetry in cuprate superconductors (CC Tsuei,JR Kirtley). Spin gap effects on the c-axis and in-plane charge dynamics of http://www.elsevier.com/wps/product/cws_home/600700

Home Site map Regional Sites Advanced Product Search ... Materials and Mechanisms of Superconductivity - High Temperature Superconductors Book information Product description Author information and services Ordering information Bibliographic and ordering information Conditions of sale Book related information Submit your book proposal Other books in same subject area About Elsevier Select your view MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY - HIGH TEMPERATURE SUPERCONDUCTORS http://books.elsevier.com/elsevier/?isbn=0444828354 Invited Papers of the Fifth International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors, Beijing, China, 28 February-4 March 1997 Edited by Yu-Sheng He Pei-Heng Wu Li-Fang Xu Zhong-Xian Zhao , Chinese Academy of Sciences, Beijing, China Description The discovery of high temperature superconductivity has not only opened many possibilities for potential technical applications, but has also provided a unique, challenging research subject for condensed matter physics and material sciences. High temperature superconductivity appears in systems with strong electron correlation and constitutes one of the key issues in condensed matter physics. The understanding of its mechanism will therefore greatly promote the future developments of this branch of science. During the last ten years great progress has been made in both fundamental and application-oriented research. Expanding knowledge of the physical properties in the superconducting as well as the normal state in preparing the way to an understanding of the underlying mechanisms. The accumulated experience in materials processing enables technical applications. All these aspects of high-

112. Tiny Superconductors Withstand Stronger Magnetic Fields Because nanoscale superconductors don’t repel magnetic fields, they could proveuseful in a variety of superconducting applications. http://www.news.uiuc.edu/news/05/0204nanowires.html

Home About Us Contact Us For Media Text Only"); //> Text Only RESEARCH Science General Business Archives NEWS INDEX This Year Archives PUBLICATIONS Inside Illinois II Archives II Advertising About II ... Postmarks QUICK SEARCH MORE Illinois in the News Campus Calendar Other News Sources NEWS INDEX Archives February Tiny superconductors withstand stronger magnetic fields James E. Kloeppel, Physical Sciences Editor kloeppel@uiuc.edu Click photo to enlarge Photo by Kwame Ross Alexey Bezryadin, a professor of physics at Illinois, has created high-quality superconducting wires with molecular dimensions, and measured their behavior in magnetic fields of various strengths. The observational results have confirmed that theories developed for bulk superconductors also apply to molecular-scale superconductors. As described in the Jan. 14 issue of the journal Physical Review Letters, researchers at the University of Illinois at Urbana-Champaign have created high-quality superconducting wires with molecular dimensions, and measured their behavior in magnetic fields of various strengths. The observational results have confirmed that theories developed for bulk superconductors also apply to molecular-scale superconductors.

113. Point-contact Spectroscopy Deepens Mystery Of Heavy-fermion Superconductors CHAMPAIGN, Ill. — Theoretical understanding of heavyfermion superconductors has between normal metals and heavy-fermion superconductors,” said Greene, http://www.news.uiuc.edu/news/05/0324superconductors.html

Home About Us Contact Us For Media Text Only"); //> Text Only RESEARCH Science General Business Archives NEWS INDEX This Year Archives PUBLICATIONS Inside Illinois II Archives II Advertising About II ... Postmarks QUICK SEARCH MORE Illinois in the News Campus Calendar Other News Sources NEWS INDEX Archives March Point-contact spectroscopy deepens mystery of heavy-fermion superconductors James E. Kloeppel, Physical Sciences Editor kloeppel@uiuc.edu Click photo to enlarge Photo by Kwame Ross Laura Greene, a Swanlund Endowed Chair in physics at Illinois, and colleagues at Los Alamos National Laboratory recently used a sensitive technique called point-contact spectroscopy to explore Andreev reflection between a normal metal and a heavy-fermion superconductor. Researchers from the University of Illinois at Urbana-Champaign and Los Alamos National Laboratory recently used a sensitive technique called point-contact spectroscopy to explore Andreev reflection between a normal metal and a heavy-fermion superconductor. Conventional theories cannot account for their data, the scientists report.

114. New Types Of Superconductors superconductors conduct electricity with little or no resistance. Organicsuperconductors contain carbon and are less dense than their ceramic or metallic http://www.er.doe.gov/Sub/Accomplishments/Decades_Discovery/4.html

Contact Site Map Privacy Policy New Types of Superconductors Organic superconductor with the highest T c k-(ET) Cu[N(CN) ]Cl Scientific Impact: These advances will help scientists develop a theory of how organic superconductors work and contribute to the design of new materials with higher transition temperatures. The all-organic material is ideal for studies of magnetic and charge transport properties because there is no possibility of contamination from metallic impurities. Social Impact: Superconductivity already has important applications, such as medical diagnostic equipment, and many more uses are possible if transition temperatures are high enough. The availability of purely organic superconductors greatly expands the possibilities, especially for applications in which weight is a factor. Reference: Ambient-Pressure Superconductivity at 2.7 K and Higher Temperatures in Derivatives of beta(ET) IBr : Synthesis, Structure, and Detection of Superconductivity. Williams, J. M.; Wang, H. H.; Beno, M. A.; Emge, T. J.; Sowa, L. M.; Copps, P. T.; Behroozi, F.; Hall, L. N.; Carlson, K. D.; Crabtree, G. W. Inorg. Chem.

115. Superconductors (Yamashita)-Springer Superconductivity, Superfluidity, Quantum F This book treats superconductivity from a theoretical phenomenological viewpointand describes technological applications. The authors use a language common http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-115-22-52080413-0,00.h

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116. Press Release: The 2003 Nobel Prize In Physics These typeII superconductors allow superconductivity and magnetism to exist atthe same time and remain superconductive in high magnetic fields. http://nobelprize.org/physics/laureates/2003/press.html

HOME SITE HELP ABOUT SEARCH ... EDUCATIONAL English French German Russian (pdf) Swedish Press Release: The 2003 Nobel Prize in Physics 7 October 2003 The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2003 "for pioneering contributions to the theory of superconductors and superfluids" jointly to Alexei A. Abrikosov Argonne National Laboratory, Argonne, Illinois, USA, Vitaly L. Ginzburg P.N. Lebedev Physical Institute, Moscow, Russia, and Anthony J. Leggett University of Illinois, Urbana, Illinois, USA. Flow without resistance This year's Nobel Prize in Physics is awarded to three physicists who have made decisive contributions concerning two phenomena in quantum physics: superconductivity and superfluidity. Superconducting material is used, for example, in magnetic resonance imaging for medical examinations and particle accelerators in physics. Knowledge about superfluid liquids can give us deeper insight into the ways in which matter behaves in its lowest and most ordered state. At low temperatures (a few degrees above absolute zero) certain metals allow an electric current to pass without resistance. Such superconducting materials also have the property of being able to displace magnetic flows completely or partly. Those that displace magnetic flows completely are called type-I superconductors and a theory explaining them was awarded the

117. Correlated Fermions And High Critical Temperature Superconductors The superconductor activity (besides organic superconductors) of the laboratory The metallic phase of highTc superconductors exhibits other riches, http://www.lps.u-psud.fr/Activites/ThemeA.asp

News - Presentation How to reach us Directory - Mug collection Scientific teams ... Persons working on the topic This high critical temperature superconductor, YBa Cu O 6+x is studied in the laboratory along with a number of other oxide superconductors. The CuO planes, in grey, are responsible for most of the exotic properties of these materials: an order parameter with “d-wave” symmetry, anomalous metallic behaviour, vortices, etc. Measurements and theory concern magnetic, transport and structural properties, not only of the superconducting state but also of normal and mixed states. Non magnetic impurities produce unexpected effects, in the normal metal state of a high critical temperature superconductor. When a zinc or lithium atom is substituted to copper in the CuO planes, it induces magnetic moments in its vicinity (left). The magnetism of the planes is thus affected in an alternate way, reminiscent of the RKKY effect in metals, or Friedel's oscillations (right). This effect is quite unexpected, since zinc or lithium in a metal do not yield magnetic effects. By the way, the shape of the alternate polarisation differs from that of a metal. One can detect the induced magnetic moments by using Nuclear Magnetic Resonance, which is sensitive to the long-distance effect of these moments. The metallic phase of high-

118. Macroscopic Phase Separation In High-temperature Superconductors -- Wen 97 (21): The mechanism of hightemperature superconductors, one of the challenging issues,has stimulated enormous effort in recent years. http://www.pnas.org/cgi/content/full/97/21/11145

October 10, 2000 This Article Abstract Full Text (PDF) Alert me when this article is cited ... Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal ... Download to citation manager Search for citing articles in: ISI Web of Science (2) PubMed PubMed Citation Articles by Wen, H.-H. From the Academy Chinese-American Frontiers of Science Symposium Macroscopic phase separation in high-temperature superconductors Hai-Hu Wen National Laboratory for Superconductivity, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080, People's Republic of China Abstract Top Abstract Article References High-temperature superconductivity is recovered by introducing extra holes to the Cu-O planes, which initially are insulating with antiferromagnetism. In this paper I present data to show the macroscopic electronic phase separation that is caused by either mobile doping or electronic instability in the overdoped region. My results clearly demonstrate that the electronic inhomogeneity

119. UConn Advance - March 1, 2004 - Condensed Matter Physicist Studies Behavior Of S It s a small, dramatic demonstration of what hightemperature superconductorscan do. Trains powered by superconductors using magnetic levitation have been http://www.advance.uconn.edu/2004/040301/04030112.htm

This is an archived article. For the latest news, go to the Advance Homepage For more archives, go to the Advance Archive/Search Page. March 1, 2004 Condensed Matter Physicist Studies Behavior Of Superconductors By Lucinda Weiss Barrett Wells has a favorite experiment that he performs right at his desk for visitors. He takes a piece of superconductive material about the size of two quarters stacked together, places it in a Styrofoam dish, pours liquid nitrogen on it to chill it, and then, with tweezers, places a tiny, 1/8-inch square magnet above it. The magnet levitates, spinning in the air just above the superconductor, which will repel any pole the little magnet presents. Barrett Wells, assistant professor of physics, works with Feizhou He, a physics graduate student, using the Pulsed Laser Deposition machine, equipment for studying and analyzing the activity of superconductors. Photo by Melissa Arbo "It looks like magic," says Wells, an assistant professor of physics. "I want to know why that works."

120. Bristol University - Superconductors High temperature superconductors are ceramic materials that can conduct electricity The structure of superconductors consists of many layers of atoms http://www.bris.ac.uk/news/2004/432

@import url(/news/news.css); skip menus home contacting people a-z index ... help NEWS ARCHIVE Search the news archive News from 2005 News from 2004 News from 2003 ... News from 2000 News related links Do you have a story? re:search (online) Newsletter Information for the media ... Public Relations Office RSS Newsfeed Want our latest news headlines on your site? University home News Superconductors News Top stories Needle-free injections for diabetes patients 21 Sep 05 Renowned historian to speak on slave languages 21 Sep 05 One in every hundred Londoners could be crack cocaine users 20 Sep 05 Search the news archive Keyword Year All Sort by Newest first Oldest first Magnetic glue found in superconductors 02 June 2004 A breakthrough has been made by a team of scientists, led by Professor Stephen Hayden from the University of Bristol, in understanding how high temperature superconductors work. Their results, announced today in Nature High temperature superconductors are ceramic materials that can conduct electricity across huge distances without losing any energy. They are relatively cheap to make and have enormous potential in many areas of technology, but there is still controversy over what actually causes the superconductivity. "Our results suggest that the glue may be due to the very weak magnetism of the electrons in the copper atoms of the superconductor."

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