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3 edition of Tunneling phenomena in high and low Tc superconductors found in the catalog.

Tunneling phenomena in high and low Tc superconductors

Workshop on Josephson Devices (3rd 1991 Capri, Italy)

Tunneling phenomena in high and low Tc superconductors

proceedings of the Third Workshop on Josephson Devices, Capri, Italy, 1-4 October 1991

by Workshop on Josephson Devices (3rd 1991 Capri, Italy)

  • 337 Want to read
  • 8 Currently reading

Published by World Scientific in Singapore, River Edge, NJ .
Written in English

    Subjects:
  • Semiconductors -- Congresses.,
  • Tunneling (Physics) -- Congresses.,
  • Josephson junctions -- Congresses.

  • Edition Notes

    Includes bibliographical references and index.

    Statementeditors, Alessandro di Chiara, Maurizio Russo.
    ContributionsDi Chiara, Allesandro., Russo, M.
    Classifications
    LC ClassificationsQC610.9 .W66 1991
    The Physical Object
    Paginationix, 271 p. :
    Number of Pages271
    ID Numbers
    Open LibraryOL552866M
    ISBN 109810210302
    LC Control Number96134609
    OCLC/WorldCa28552639

    A Prague Thriller. Author: Milos Urban. Publisher: Peter Owen Publishers ISBN: Page: View:   We report extensive measurements of transport characteristics and low-frequency resistance noise of c-axis yttrium-barium-copper-oxide (YBCO)/Au junctions. The dominant conduction mechanism is tunneling at low temperatures. The conductance characteristic is asymmetric, and the conductance minimum occurs at a nonzero voltage.

    Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of particular it is concerned with the "condensed" phases that appear whenever the number of constituents in a system is extremely large and the interactions between the constituents are strong. Exotic Phenomena in Heavy-Electron Systems (H R Ott et al) Molecular Conductors: The Mesopotamia of Low-Dimensional Physics (J S Brooks et al) Quasi-One-Dimensional Conductors in High and Tilted Magnetic Fields (G M Danner et al) Magnetic Field Effects .

    Electronic Raman scattering from high- and low-energy excitations was studied as a function of temperature, extent of hole doping, and energy of the incident photons in Bi2Sr2CaCu2O8±δsuperconductors. For underdoped superconductors, short-range antiferromagnetic (AF) correlations were found to persist with hole doping, and doped single holes were found to be . results can be used to evaluate T C for the cubic high -T C phase.. The values of the coupling constants and μ* (usually μ* ≈ ÷ ) for ordinary superconductors can be determined from tunneling spectroscopy measurements (see, e.g. 32); tunneling spectroscopy also has been used to study the effect of pressure Since such measurements have not been performed for sulfur.


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Tunneling phenomena in high and low Tc superconductors by Workshop on Josephson Devices (3rd 1991 Capri, Italy) Download PDF EPUB FB2

Get this from a library. Tunneling phenomena in high and low Tc superconductors: proceedings of the Third Workshop on Josephson Devices, Capri, Italy, October [Allesandro Di Chiara; M Russo;].

In book: The Gap Symmetry and Fluctuations in High-Tc Superconductors, pp thin films and NdCeCuO4-y (NCCO) single crystals by low-temperature scanning tunneling microscopy. Using some sophisticated modes of scanning tunneling spectroscopy the local density of states on two superconducting compounds in the superconductive state at K were analyzed.

On NbSe 2 which is a type‐II low‐T c material, the Abrikosov flux line lattice was imaged for various external magnetic fields up to B field‐induced decrease of the vortex core radius for increasing Cited by: 1. Superconductivity conforms to a quantum, thermal, and electrodynamic set of physical phenomena of great interest by themselves.

They have, also, the potential to be one clean energy source that technology is looking for. Superconductors do Tunneling phenomena in high and low Tc superconductors book allow static magnetic fields to penetrate them below a critical field, that is, Meissner effect.

However, microwave magnetic fields do penetrate them. About this book. Introduction. The aim of this volume is to provide advanced predoctoral students and young postdoctoral physicists with an opportunity to study the concepts of tunneling phenomena in solids and the theoretical and experimental techniques for their investigation.

and superconductors, and atomic tunneling in solids. The work. High-temperature superconductors (abbreviated high-T c or HTS) are operatively defined as materials that behave as superconductors at temperatures above nearly K (− °C).

This is in fact the lowest temperature reachable by liquid nitrogen, one of the simplest coolants in cryogenics. All superconducting materials known at ordinary pressures currently work far below ambient. Tanaka, Theory of Tunneling Effect and Proximity Effect in high Tc Superconductors, in Coherence in High Temperature Superconductors, Alex Revcolevschi Guy Deutscher Editor.

(), World Scientific, Singapore: Tel Aviv. Google Scholar. Superconductivity is the set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material.

Any material exhibiting these properties is a an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered even down to near absolute zero, a superconductor has.

The current status of tunneling measurements of the superconducting density of states near the Fermi level of high-T c superconductors is reviewed. A number of the characteristics of the tunneling data that had previously been considered to be "non-ideal" follow quite naturally from conventional tunneling theory, if the effects of the unusually large energy gap, often unusually small tunneling.

Hill's research works with 2, citations and 3, reads, including: Molecular spins for quantum computation. Physica C () North-Holland NEW RELAXATION PHENOMENA IN HIGH-T, CERAMIC SUPERCONDUCTORS Yu.

KARIMOV and A.D. KIKIN Institute of Structural Macrokinetics, Academy ofScience of the USSR,Chernogolovka, Moscow District, USSR Received 14 May The mutual action of applied magnetic fields and transport currents causes a transition of superconductors.

Physica B () North-Holland, Amsterdam ELECTRON TUNNELING INTO A15 AND BI SUPERCONDUCTORS J. GEERK, U. SCHNEIDER", W. BANGERT, H. RIETSCHEL and F.

GOMPF Kernforschungszentrum Karlsruhe, Institut f Nukleare Festkperphysik, PostfachD Karlsruhe, FRG M. GURVITCH and J. REMEIKA AT&T Bell Laboratories, Murray Hill, NJ, USA J.M.

GKZMKIGZQLGN» Kindle «High-Tc Superconductors and Related Materials High-Tc Superconductors and Related Materials Filesize: MB Reviews If you need to adding benefit, a must buy book.

It usually does not charge excessive. I realized this ebook from my dad and i suggested this publication to learn. (Alec Veum) DISCLAIMER | DMCA. The tunneling density of states of high-T c superconductors is calculated taking into account the tight-binding band structure, group velocity, and tunneling directionality for s-wave and d-wave gap characteristic density of states has asymmetry of the quasiparticle peaks, flat s-wave and cusplike d-wave subgap behavior, and an asymmetric background.

The superconducting tunnel junction (STJ) — also known as a superconductor–insulator–superconductor tunnel junction (SIS) — is an electronic device consisting of two superconductors separated by a very thin layer of insulating material.

Current passes through the junction via the process of quantum STJ is a type of Josephson junction, though not all. E-BOOK EXCERPT. This workshop includes about papers describing the flux pinning and related electromagnetic phenomena in superconductors.

Various problems are argued on exotic properties of flux lines, flux dynamics, flux pinning mechanisms, critical current density and critical state phenomena in both high- and low-temperature superconductors. The problem of superconductors has been a central issue in Solid State Physics since After the discovery of superconductivity (HTSC) in doped perovskites, it was realized that the HTSC appears in an unknown complex electronic phase of c- densed matter.

In the early years, all theories of HTSC. InJ. Georg Bednorz and K. Alex Mueller discovered superconductivity in a lanthanum-based cuprate perovskite material, which had a transition temperature of 35 K (Nobel Prize in Physics, ) and was the first of the high-temperature was shortly found (by Ching-Wu Chu) that replacing the lanthanum with yttrium, i.e.

making YBCO, raised the critical temperature to 92 K. Abstract. We report results of a study of electron tunneling into bulk samples of the new high-T c superconductor Y-Ba-Cu-O using point-contact tunneling. Based on a superconductive tunneling interpretation, the results show exceptionally large energy gaps in these materials (roughly 2∆= meV), implying 2∆/k C T c ~ Similar values were found previously by us for La-Sr-Cu-O.

In the analysis of tunneling experiments on high Tc superconductors it is generally assumed that the tunneling matrix elements are energy independent and isotropic in the ab‐plane.

This assumption breaks down if the Fermi energy is close to a van Hove singularity in the density of states, related to a saddlepoint in the bandstructure. The vanishing group velocity near such a saddlepoint. Low-frequency noise measurements of many junctions with contact areas ranging from 4 υm 2 to 64 υm 2, over a wide temperature and bias range, indicate that the noise figure for engineering design may be expressed as a normalized resistance fluctuation δR/R{approximately equal}6× /√Hz at .Abstract This program was an outgrowth of our early empirical successes in forming superconducting tunnel junctions on thin films of the high transition temperature superconductors, specifically those in the so-called A15 class such as Nb3Sn (T(c) approximately 18 K) and V3Si (T(c) approximately 16 K).Hofstadter subband ferromagnetism and symmetry broken Chern insulators in twisted bilayer graphene.