Topic
High-temperature superconductivity
About: High-temperature superconductivity is a research topic. Over the lifetime, 7263 publications have been published within this topic receiving 175377 citations. The topic is also known as: high-temperature superconductivity.
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TL;DR: In this paper, a bisoliton model of high-temperature superconductivity based on a system of nonlinear equations is introduced, which is characterized by a single wave function for the whole crystal that describes a condensate of bisolitons.
72 citations
TL;DR: The electronic structure of high Tc Bi2Sr2CaCu2O8 single crystals in the vicinity of the Fermi level EF was determined down to about 0.7Tc by high-resolution angle-resolved photoemission spectroscopy applying HeI and synchrotron radiation as discussed by the authors.
Abstract: The electronic structure of high-Tc Bi2Sr2CaCu2O8 single crystals in the vicinity of the Fermi level EF is determined down to about 0.7Tc by high-resolution angle-resolved photoemission spectroscopy applying HeI and synchrotron radiation. Spectra taken with 18 eV photon energy at an emission angle of 9° reveal a clear Fermi edge T > Tc. For T < Tc the emission intensity changes distinctly—at EF it decreases whereas it increases at about 100 meV below EF—accompanied by a clear shift of the emission onset to higher binding energy. These observations can be consistently explained by the opening of an energy gap of about 30 meV in the superconducting quasi-particle density of states, yielding a ratio Δ (0)/kB Tc about twice as large as the BCS value indicating that Bi2Sr2CaCu2O8 is a strong-coupling superconductor.
72 citations
TL;DR: In this paper, the typical features of temperature dependences of such magnetic properties as spin susceptibility and nuclear magnetic relaxation rate in various Cu oxides together with the doping dependence of the critical temperatures can be understood by a phase diagram deduced from the mean field theory for the t-J model.
Abstract: It is discussed that typical features of temperature dependences of such magnetic properties as spin susceptibility and nuclear magnetic relaxation rate in various Cu oxides together with the doping dependence of the critical temperatures can be understood by a phase diagram deduced from the mean field theory for the t-J model
71 citations
71 citations
TL;DR: In this paper, the dominant role of saddle point singularity on the Fermi surface and generalized susceptibility, χ(q), in the quasi-2D superconductor La2-xMxCuO4 is shown for varying compositions x of divalent additions M=Sr, Ba ….
71 citations