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The superconducting s-wave state in Weyl semimetals in a strong strain-induced pseudomagnetic field is investigated in a model with local four-fermion interaction. It is found that only the inter-node pairing is possible in the lowest…

Superconductivity · Physics 2020-08-03 P. O. Sukhachov , E. V. Gorbar

Inducing superconductivity in systems with unconventional band structures is a promising approach for realising unconventional superconductivity. Of particular interest are single interface or Josephson Junction architectures involving Weyl…

Superconductivity · Physics 2024-02-12 Robert Dawson , Vivek Aji

The motivation to search for signatures of superconductivity in Weyl semi-metals and other topological phases lies in their potential for hosting exotic phenomena such as nonzero-momentum pairing or the Majorana fermion, a viable candidate…

Superconductivity · Physics 2018-08-30 M. R. van Delft , S. Pezzini , M. König , P. Tinnemans , N. E. Hussey , S. Wiedmann

Topologically nontrivial superconducting phases have been engineered in topological materials by the proximity effect in contact with conventional superconductors. In this paper, by using the method of the Kronig-Penney model, we study the…

Superconductivity · Physics 2020-03-16 Ryota Nakai , Kentaro Nomura

We study superconductivity in a Weyl semimetal with a tilted dispersion around two Weyl points of opposite chirality. In the absence of any tilt, the state with zero momentum pairing between two Fermi sheets enclosing each Weyl point has…

Superconductivity · Physics 2018-04-04 M. Alidoust , K. Halterman , A. A. Zyuzin

Weyl superconductivity is a topological phase in three-dimensional crystals in which the Weyl equation describes quasiparticle excitation near band-touching points in momentum space called Weyl nodes. For quasicrystals which lack…

Superconductivity · Physics 2024-09-09 Masahiro Hori , Ryo Okugawa , K. Tanaka , Takami Tohyama

We show that Weyl superconductivity can be induced by finite supercurrent in noncentrosymmetric spin-orbit-coupled superconductors with line nodes. We introduce a three-dimensional tight-binding model of a tetragonal superconductor in a…

Superconductivity · Physics 2022-06-08 Shuntaro Sumita , Kazuaki Takasan

Recent experimental breakthrough in magnetic Weyl semimetals have inspired exploration on the novel effects of various magnetic structures in these materials. Here we focus on a domain wall structure which connects two uniform domains with…

Superconductivity · Physics 2021-06-07 Zhao Huang , Christopher Lane , Dmitry Yarotski , A. J. Taylor , Jian-Xin Zhu

We study the physics of the superconducting variant of Weyl semimetals, which may be realized in multilayer structures comprising topological insulators and superconductors. We show how superconductivity can split each Weyl node into two.…

Mesoscale and Nanoscale Physics · Physics 2017-09-12 Tobias Meng , Leon Balents

Due to the non-trivial topological band structure in type-II Weyl semimetal Tungsten ditelluride (WTe2), unconventional properties may emerge in its superconducting phase. While realizing intrinsic superconductivity has been challenging in…

Weyl semimetal defines a material with three dimensional Dirac cones which appear in pair due to the breaking of spatial inversion or time reversal symmetry. Superconductivity is the state of quantum condensation of paired electrons.…

We introduce superconducting proximity effects in Weyl semi-metals (WSM) with broken time reversal symmetry by tunnel coupling one of its surfaces to an s-wave superconductor using the Green's function approach. We find that the band…

Mesoscale and Nanoscale Physics · Physics 2016-02-09 Udit Khanna , Arijit Kundu , Saurabh Pradhan , Sumathi Rao

The introduction of superconductivity to the Dirac surface states of a topological insulator leads to a topological superconductor, which may support topological quantum computing through Majorana zero modes. The development of a scalable…

Recently, Wang $et$ $al.$ have reported the observation of "unconventional superconductivity" in the Weyl semimetal TaAs [arXiv:1607.00513]. The authors have written "\textit{A conductance plateau and sharp double dips are observed in the…

Superconductivity · Physics 2016-07-25 Sirshendu Gayen , Leena Aggarwal , Goutam Sheet

Time-reversal invariant topological superconductors are a new state of matter which have a bulk superconducting gap and robust Majorana fermion surface states. These have not yet been realized in solid state systems. In this paper, we…

Strongly Correlated Electrons · Physics 2014-07-30 Pavan Hosur , Xi Dai , Zhong Fang , Xiao-Liang Qi

Topological superconductors offer a fertile ground for realizing Majorana zero modes -- topologically protected, zero-energy quasiparticles that are resilient to local perturbations and hold great promise for fault-tolerant quantum…

Weyl superconductors feature Weyl points at zero energy in the three-dimensional (3D) Brillouin zone and arc states that connect the projections of these Weyl points on the surface. We report that higher-order Weyl superconductors can be…

Mesoscale and Nanoscale Physics · Physics 2021-05-26 W. B. Rui , Song-Bo Zhang , Moritz M. Hirschmann , Andreas P. Schnyder , Björn Trauzettel , Z. D. Wang

Weyl fermion is a massless Dirac fermion with definite chirality, which has been long pursued since 1929. Though it has not been observed as a fundamental particle in nature, Weyl fermion can be realized as low-energy excitation around Weyl…

Superconductivity · Physics 2017-03-29 He Wang , Huichao Wang , Yuqin Chen , Jiawei Luo , Zhujun Yuan , Jun Liu , Yong Wang , Shuang Jia , Xiong-Jun Liu , Jian Wei , Jian Wang

The possibility of inducing superconductivity in type-I Weyl semimetal through coupling its surface to a superconductor was investigated. A single crystal of NbP, grown by chemical vapor transport method, was carefully characterized by XRD,…

We investigate the tunneling conductance of Weyl semimetal with tilted energy dispersion by considering electron transmission through a p-n-p junction with one-dimensional electric and magnetic barrier. In the presence of both electric and…

Mesoscale and Nanoscale Physics · Physics 2017-07-21 Can Yesilyurt , Seng Ghee Tan , Gengchiau Liang , Mansoor B. A. Jalil
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