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Recent experiments show strong evidences of nematic triplet superconductivity in doped Bi$_2$Se$_3$ and in Bi$_2$Te$_3$ thin film on a superconducting substrate, but with varying identifications of the direction of the $d$-vector of the…

超导电性 · 物理学 2018-08-15 Wei-Cheng Bao , Qing-Kun Tang , Da-Chuan Lu , Qiang-Hua Wang

In zero magnetic field the superconductor Sr$_2$RuO$_4$ is believed to have a chiral spin triplet pairing state in which the gap function d-vector is aligned along the crystal c-axis. Using a phenomenological but orbital specific…

超导电性 · 物理学 2009-11-13 James F. Annett , B. L. Györffy , G. Litak , K. I. Wysokiński

We investigate chiral superconductivity which occurs in the electronic nematic state. A vortex state in a $c$-axis magnetic field is studied on the basis of the two-component Ginzburg-Landau model for nematic-chiral superconductors. It is…

超导电性 · 物理学 2015-02-09 Shuhei Takamatsu , Youichi Yanase

Motivated by the phenomenology of graphene moir\'e superlattices, we study a 2D model with strong tendencies towards both magnetism and triplet superconductivity. Individually, their respective order parameters, $\vec{N}$ and $\vec{d}$,…

超导电性 · 物理学 2024-02-27 Prathyush P. Poduval , Mathias S. Scheurer

Motivated by the observation of nematic superconductivity in several systems, we revisit the problem of the leading pairing instability of two-component unconventional superconductors on the triangular lattice -- such as…

超导电性 · 物理学 2022-10-05 Virginia Gali , Rafael M. Fernandes

The superconductor Sr_2RuO_4 is widely believed to be a spin triplet system with a chiral order parameter analogous to the A phase of superfluid helium-3. The best evidence for this pairing state is that the Knight shift or spin…

超导电性 · 物理学 2009-11-11 J. F. Annett , G. Litak , B. L. Gyorffy , K. I. Wysokinski

Electronic nematicity, a consequence of rotational symmetry breaking, is an emergent phenomenon in various new materials. In order to fully utilize the functions of these materials, ability of tuning them through a knob, the nematic…

超导电性 · 物理学 2023-03-29 M. Yokoyama , H. Nishigaki , S. Ogawa , S. Nita , H. Shiokawa , K. Matano , Guo-qing Zheng

We study a triplet spin valve obtained by intercalating a triplet superconductor spacer between two ferromagnetic regions with non-collinear magnetizations. We demonstrate that the magnetoresitance of the triplet spin valve depends on the…

介观与纳米尺度物理 · 物理学 2013-12-02 F. Romeo , R. Citro

Motivated by the possibility of superconductivity in doped graphene sheets, we investigate superconducting order in the extended Hubbard model on the two-dimensional graphene lattice using the variational cluster approximation (VCA) and the…

超导电性 · 物理学 2019-05-29 J. P. L. Faye , P. Sahebsara , D. Sénéchal

The nematic-superconductor state is an example of a quantum liquid crystal that breaks gauge as well as rotation invariance. It was conjectured to exist in the pseudogap regime of the cuprates high $T_c$ superconductors. The…

超导电性 · 物理学 2016-11-18 Daniel G. Barci , Rafael V. Clarim , Nei L. Silva Júnior

Larkin-Ovchinnikov superconducting state has spontaneous modulation of Cooper pair density, while Fulde-Ferrell state has a spontaneous modulation in the phase of the order parameter. We report that a quasi-two-dimensional Dirac metal,…

超导电性 · 物理学 2019-07-09 Mats Barkman , Alexander A. Zyuzin , Egor Babaev

We investigate unconventional superconductivity in three-dimensional electronic systems with the chemical potential close to a quadratic band touching point in the band dispersion. Short-range interactions can lead to d-wave…

强关联电子 · 物理学 2018-02-06 Igor Boettcher , Igor F. Herbut

We investigate the spin-triplet superconducting state of Sr2RuO4 in the magnetic field along the c-axis on the basis of the four-component Ginzburg-Landau (GL) model with a weak spin-orbit coupling. We consider superconducting states…

超导电性 · 物理学 2015-02-09 Shuhei Takamatsu , Youichi Yanase

It was recently shown that conventional phonon-electron interactions induce triplet pairing states in time-reversal invariant 3D Dirac semi - metals provided magnetic impurities or exchange interactions are strong enough?. The order…

超导电性 · 物理学 2015-02-02 Baruch Rosenstein , Boris Ya. Shapiro , Irina Shapiro

Specific features of two-dimensional nematodynamics give rise to shortfalls of the tensor representation of the nematic order parameter commonly used in computations, especially in theory of active matter. The alternative representation in…

软凝聚态物质 · 物理学 2022-09-21 L. M. Pismen

Recent experiments indicate that superconductivity in Bi$_2$Se$_3$ intercalated with Cu, Nb or Sr is nematic with rotational symmetry breaking. Motivated by this observation, we present a model study of nematic and chiral superconductivity…

超导电性 · 物理学 2017-10-10 Fengcheng Wu , Ivar Martin

Nematic superconductors possess unconventional superconducting order parameters that spontaneously break rotational symmetry of the underlying crystal. In this work we propose a mechanism for nematic superconductivity stabilized by strong…

超导电性 · 物理学 2019-04-10 Vladyslav Kozii , Hiroki Isobe , Jörn W. F. Venderbos , Liang Fu

The orbital symmetry of the superconducting order parameter in UPt_3 is identified by evaluating the directionally dependent thermalconductivity and ultrasound attenuation in the clean limit and compared with the existing data for both…

超导电性 · 物理学 2009-10-31 Kazushige Machida , Tsutomu Nishira , Tetsuo Ohmi

It was recently shown that conventional phonon-electron interactions may induce a triplet pairing state in time-reversal invariant 3D Dirac semi - metals. Starting from the microscopic model of the isotropic Dirac semi-metal, the…

超导电性 · 物理学 2015-04-07 B. Rosenstein , B. Ya. Shapiro , I. Shapiro

The interplay of nematicity and superconductivity has been observed in a wide variety of quantum materials. To explore this interplay, we consider a two-dimensional (2D) array of nematogens, local droplets with $Z_3$ nematicity, coupled to…

超导电性 · 物理学 2024-02-13 Finn Lasse Buessen , Sopheak Sorn , Ivar Martin , Arun Paramekanti
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