Pseudogap and Superconductivity in Iron-Based Layered Superconductor Studied by Fluctuation-Exchange Approximation(Condensed matter: electronic structure and electrical, magnetic, and optical properties) [PDF]
, 2008 We investigate interplay between magnetic fluctuations and superconductivity in the effective five-band Hubbard model for iron-oxypnictide superconductors on the basis of the fluctuation–exchange approximation. As for the normal-state properties, we find
H. Ikeda
semanticscholar +1 more source
Possible crossover from BCS superconductivity to Bose-Einstein condensate in quark matter
AIP Conference Proceedings, 2007 6 pages, 4 figures, Contributed to International Workshop on Quantum Chromodynamics: QCD@Work 2007, Martina Franca, Valle d'Itria, Italy, 16-20 Jun ...
Hiroaki Abuki +6 more
openaire +3 more sources
Superconductivity and a Mott Transition in a Hubbard Model on an Anisotropic Triangular Lattice(Condensed matter: electronic structure and electrical, magnetic, and optical properties) [PDF]
, 2006 A half-filled-band Hubbard model on an anisotropic triangular lattice ( t in two bond directions and t ' in the other) is studied using an optimization variational Monte Carlo method, to consider a Mott transition and superconductivity arising in κ-(BEDT-
Tsutomu Watanabe +3 more
semanticscholar +1 more source
Incommensurate Antiferromagnetism Coexisting with Superconductivity in Two-Dimensional d-p Model(Condensed matter: electronic structure and electrical, magnetic, and optical properties) [PDF]
, 2009 Numerical studies of the two-dimensional d–p model using the Gutzwiller ansatz have exhibited the incommensurate antiferromagnetic state coexisting with superconductivity in the under- and lightly doped regions.
T. Yanagisawa, M. Miyazaki, K. Yamaji
semanticscholar +1 more source
Strong-Coupling Superconductivity of CeIrSi_3 with the Non-centrosymmetric Crystal Structure(Condensed matter: electronic structure and electrical, magnetic, and optical properties) [PDF]
, 2007 We studied the pressure-induced superconductor CeIrSi$_3$ with the non-centrosymmetric tetragonal structure under high pressure. The electrical resistivity and ac heat capacity were measured in the same run for the same sample.
N. Tateiwa +8 more
semanticscholar +1 more source
Mott Transitions and d-Wave Superconductivity in Half-Filled-Band Hubbard Model on Square Lattice with Geometric Frustration(Condensed matter: electronic structure and electrical, magnetic, and optical properties) [PDF]
, 2006 Mechanisms of Mott transitions and d x 2 - y 2 -wave superconductivity (SC) are studied in the half-filled-band Hubbard model on square lattices with a diagonal hopping term ( t '), using an optimization (or correlated) variational Monte Carlo method. In
H. Yokoyama, M. Ogata, Yukio Tanaka
semanticscholar +1 more source
Coexistence of pion condensation and color superconductivity in two flavor quark matter
Physics Letters B, 2003 Change of the title.
openaire +4 more sources
Vortex matter in
Physical Review B, 2014 We study the properties of vortex solutions and magnetic response of two-component U(1)xU(1)xZ(2) superconductors, with phase separation driven by intercomponent density-density interaction. Such a theory can be viewed arising from the breakdown of SU(2) symmetry by a biquadratic interaction between the components of the field.
Garaud, Julien, Babaev, Egor
openaire +2 more sources
Superconducting electrons go missing
Nature, 2016 'Overdoped' high-temperature superconductors, which have a high density of charge carriers, were thought to be well understood. An experiment challenges what we know about quantum physics in such systems. See Letter p.309 Ivan Božovic et al.
openaire +5 more sources
Non‐Hermitian Topological Lattice Photonics: An Analytic Perspective
Advanced Photonics Research, EarlyView.This review establishes exact analytical solutions for non‐Hermitian Hatano–Nelson, Su–Schrieffer–Heeger, and generalized Rice–Mele models. We demonstrate non‐Hermitian skin effects via point‐gap topology, hybrid skin‐topological edge states in 2D lattices, and spin‐polarized boundary modes governed by dual bulk‐boundary correspondence.
Shihua Chen +6 more
wiley +1 more source