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Superconductivity, a state in which electrical currents can flow without resistance, occurs because of pairing of electrons into quasiparticles with integer spin $S$. In practically all known superconducting materials, these pairs form a…

We investigate superconductivity in a two-orbital Hubbard model on a square lattice by applying fluctuation exchange approximation. In the present model, the symmetry of the two orbitals are assumed to be that of an s orbital. Then, we find…

超导电性 · 物理学 2009-08-11 Katsunori Kubo

We study anisotropic superconductivity in the nearly quarter-filled $\alpha$-$\mathcal{T}_3$ lattice. We analyze an extended Hubbard model with off-site attractive interactions within the mean-field framework and find two distinct chiral…

超导电性 · 物理学 2026-04-03 Masataka Kakoi , Kazuhiko Kuroki

In the quest for exotic superconducting pairing states, the Rashba effect, which lifts the electron-spin degeneracy as a consequence of strong spin-orbit interaction (SOI) under broken inversion symmetry, has attracted considerable…

In materials without an inversion center of symmetry the spin degeneracy of the conducting band is lifted by an antisymmetric spin orbit coupling (ASOC). Under such circumstances, spin and parity cannot be separately used to classify the…

超导电性 · 物理学 2016-08-31 P. A. Frigeri , D. F. Agterberg , I. Milat , M. Sigrist

We show that an in-plane Zeeman field applied to non-centrosymmetric Ising superconductors converts singlet $s$-wave Cooper pairs to equal-spin triplet $if$ pairs, leading to an enhancement of the critical transition line beyond expected…

超导电性 · 物理学 2019-06-05 David Möckli , Maxim Khodas

We use spin- and angle-resolved photoemission spectroscopy (SARPES) combined with polarization-variable laser and investigate the spin-orbit coupling effect under interband hybridization of Rashba spin-split states for the surface alloys…

材料科学 · 物理学 2017-01-26 Ryo Noguchi , Kenta Kuroda , K. Yaji , K. Kobayashi , M. Sakano , A. Harasawa , Takeshi Kondo , F. Komori , S. Shin

We investigate the possibility that the broken spatial inversion symmetry by a trap potential induces a spin-triplet Cooper-pair amplitude in an $s$-wave superfluid Fermi gas. Being based on symmetry considerations, we clarify that this…

量子气体 · 物理学 2015-08-19 Yuki Endo , Daisuke Inotani , Ryo Hanai , Yoji Ohashi

We have studied the superconducting properties of the isostructural ternary noncentrosymmetric superconductors TaXSi (X = Re, Ru) with the help of muon spin rotation/relaxation ($\mu$SR) and density functional theory calculations. Our…

To investigate relations between long-range antiferromagnetic (AF) order, superconductivity and two particle triplet collective excitations we consider a modified two dimensional t-J model at doping close to half filling. The model includes…

超导电性 · 物理学 2009-10-31 Damian Marinaro , Oleg Sushkov

By using the constrained-phase quantum Monte Carlo method, we performed a systematic study of the pairing correlations in the ground state of the doped Kane-Mele-Hubbard model on a honeycomb lattice. We find that pairing correlations with…

强关联电子 · 物理学 2015-11-25 Tianxing Ma , Hai-Qing Lin , J. E. Gubernatis

While spin-triplet pairing remains elusive in nature, there is a growing effort to realize proximity-induced equal-spin triplet superconductivity in junctions with magnetic regions or an applied magnetic field and common $s$-wave…

超导电性 · 物理学 2024-09-19 Chenghao Shen , Jong E. Han , Thomas Vezin , Mohammad Alidoust , Igor Žutić

Inversion symmetry is a key symmetry in unconventional superconductors and even its local breaking can have profound implications. For inversion-symmetric systems, there is a competition on a microscopic level between the spin-orbit…

超导电性 · 物理学 2021-08-11 Anastasiia Skurativska , Manfred Sigrist , Mark H. Fischer

Proposals for superconductivity emerging from correlated electrons in the doped Hubbard model on the honeycomb lattice range from chiral $d+id$ singlet to $p+ip$ triplet pairing, depending on the considered range of doping and interaction…

强关联电子 · 物理学 2016-09-05 Xiao Yan Xu , Stefan Wessel , Zi Yang Meng

We theoretically analyze the pairing instability of a three-dimensional ultracold atomic Fermi gas towards a Fulde-Ferrell superfluid, in the presence of Rashba spin-orbit coupling and in-plane Zeeman field. We use the standard Thouless…

量子气体 · 物理学 2013-10-15 Xia-Ji Liu

We discuss the possibility of coexistence of spin density wave (antiferromagnetism) and triplet superconductivity as a particular example of a broad class of systems where the interplay of magnetism and superconductivity is important. We…

超导电性 · 物理学 2009-11-11 Wei Zhang , C. A. R. Sa de Melo

We study superconductivity of electron systems with both spin and pseudospin-1/2 degrees of freedom. By solving linearized gap equations, we derive a weak coupling criterion for the even-parity spin-singlet pseudospin-triplet pairing. It…

超导电性 · 物理学 2023-12-07 Meng Zeng , Dong-Hui Xu , Zi-Ming Wang , Lun-Hui Hu , Fu-Chun Zhang

The trivalent alkali fullerides A$_3$C$_{60}$, where C$_{60}$ are a well established family of molecular superconductors. The electron pairing has s-wave symmetry and is due to standard electron-phonon coupling, in particular by Jahn-Teller…

超导电性 · 物理学 2009-06-24 M. Capone , M. Fabrizio , C. Castellani , E. Tosatti

We use the microscopic weak coupling theory to predict the pairing state in superconductors of cubic, hexagonal, or tetragonal symmetry, where the order parameter is multicomponent, i.e., transforms according to either a 2-dimensional or a…

超导电性 · 物理学 2009-11-11 V Kuznetsova , V. Barzykin

The proximity-induced spin-triplet $f$-wave symmetry pairing in a monolayer molybdenum disulfide-superconductor hybrid features an interesting electron-hole excitations and also effective superconducting subgap, giving rise to a distinct…

介观与纳米尺度物理 · 物理学 2017-03-08 Hadi Goudarzi , Maryam Khezerlou , Hasan Sedghi , Afifeh Ghorbai
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