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Superconductivity in a crystalline lattice without inversion is subject to complex spin-orbit-coupling effects, which can lead to mixed-parity pairing and an unusual magnetic response. In this study, the properties of a layered…

超导电性 · 物理学 2021-06-08 Eric G. Schertenleib , Mark H. Fischer , Manfred Sigrist

Phase-sensitive measurements on a composite ring made of a superconductor of interest connected by a known singlet $s$-wave superconductor can unambiguously determine its pairing symmetry. In composite rings with epitaxial $\beta-$Bi$_2$Pd…

超导电性 · 物理学 2022-10-18 Xiaoying Xu , Yufan Li , C. L. Chien

$\require{mediawiki-texvc}$The locally non-centrosymmetric superconductor SrPtAs is proposed to host a topological chiral $d$-wave state, but experimental reports have been limited to polycrystalline samples. Here we report the synthesis of…

超导电性 · 物理学 2022-10-25 A. Weiland , F. B. Santos , J. D. Thompson , E. D. Bauer , S. M. Thomas , P. F. S. Rosa

In this study, we investigate the spin susceptibility in the superconducting state of a multilayer system with a layer-dependent Rashba spin-orbit coupling, representing a locally non-centrosymmetric superconductor. We show that the charge…

超导电性 · 物理学 2013-03-07 Daisuke Maruyama , Manfred Sigrist , Youichi Yanase

Superconductivity in UTe$_{2}$ has garnered significant attention, as it is widely recognized as a promising candidate for a spin-triplet superconductor. However, the symmetry of superconductivity and the microscopic origin of spin-triplet…

超导电性 · 物理学 2025-10-17 Ryuji Hakuno , Youichi Yanase

We present here the mathematical background of our approach, presented in Phys. Rev. B 86, 134526 (2012) regarding the gap function and symmetry for the noncentrosymmetric (NCS) superconductor $Li_2Pt_3B$. As revealed by the experiment,…

超导电性 · 物理学 2013-08-16 Soumya P. Mukherjee , Tetsuya Takimoto

We examine the depairing field $H_{c2}(T)$ of non-centrosymmetric superconductors with a spin-orbit coupling larger than the Zeeman energy at $H_{c2}(0)$ by taking account of the mixing of spin-singlet and triplet pairing states due to the…

超导电性 · 物理学 2009-11-13 Norihito Hiasa , Ryusuke Ikeda

We report the discovery of a new noncentrosymmetric superconductor CaPtAs. It crystallizes in a tetragonal structure (space group $I4_1md$, No.109), featuring three dimensional honeycomb networks of Pt-As and a much elongated $c$-axis ($a =…

超导电性 · 物理学 2020-01-22 W. Xie , P. R. Zhang , B. Shen , W. B. Jiang , G. M. Pang , T. Shang , C. Cao , M. Smidman , H. Q. Yuan

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

Superconducting crystals with lack of inversion symmetry can potentially host unconventional pairing. However, till date, no direct conclusive experimental evidence of such unconventional order parameters in non-centrosymmetric…

The superconducting state of the newly discovered superconductor K$_2$Cr$_3$As$_3$ with a quasi-one-dimensional crystal structure ($T_{\bf c}\sim$ 6 K) has been investigated by using magnetization and muon-spin relaxation or rotation…

Noncentrosymmetric superconductors with broken inversion symmetry $P$ offer rich physical phenomena such as the upper critical magnetic field $H_{c2}$ beyond the Pauli limit and magnetoelectric effect. The relativistic spin-orbit…

超导电性 · 物理学 2018-07-12 Ryohei Wakatsuki , Naoto Nagaosa

We report superconductivity in as synthesized Nb2PdSe5, which is similar to recently discovered Nb2PdS5 compound having very high upper critical field, clearly above the Pauli paramagnetic limit [Sci. Rep. 3, 1446 (2013)]. A bulk…

超导电性 · 物理学 2017-01-24 Reena Goyal , Govind Gupta , A. K. Srivastava , V. P. S. Awana

We report a detailed study of superconductivity in polycrystalline SnTaS$_2$ using electrical transport, magnetization and heat capacity measurements. SnTaS$_2$ crystallizes in centrosymmetric hexagonal structure with space group…

Motivated by the recent findings of unconventional superconductivity in $\mathrm{CoSi_2 / TiSi_2}$ heterostructures, we study the effect of interface induced Rashba spin orbit coupling on the conductance of a three terminal "T" shape…

超导电性 · 物理学 2021-05-18 Vivek Mishra , Yu Li , Fu-Chun Zhang , Stefan Kirchner

We report superconductivity at $T_c = 1.22$ K and magnetic order at $T_N = 1.06$ K in the semi-metallic noncentrosymmetric Half Heusler compound ErPdBi. The upper critical field, $B_{c2}$, has an unusual quasi-linear temperature variation…

超导电性 · 物理学 2015-06-17 Y. Pan , A. M. Nikitin , T. V. Bay , Y. K. Huang , C. Paulsen , B. H. Yan , A. de Visser

Symmetry offers a useful approach to unfold the intertwined degrees of freedom. Thus it paves the way to resolve coexisting quantum orders into distinct symmetry sectors. Motivated by the recent observation of superconductivity in…

In non-centrosymmetric superconductors, spin-orbit coupling can induce an unconventional superconducting state with a mixture of s-wave spin-singlet and p-wave spin-triplet channels, which leads to a variety of exotic phenomena, including…

超导电性 · 物理学 2018-10-03 Jiabin Yu , Chao-Xing Liu

We examine weak-coupling theory for unconventional superconducting states of cubic or tetrahedral symmetry for arbitrary order parameters and Fermi surfaces and identify the stable states in zero applied field. We further examine the…

超导电性 · 物理学 2009-11-11 S. Mukherjee , D. F. Agterberg

Two dimensional SrTiO3-based interfaces stand out among non-centrosymmetric superconductors due to their intricate interplay of gate tunable Rashba spin-orbit coupling and multi-orbital electronic occupations, whose combination…