High field magneto-transport of mixed topological insulators Bi2Se3-xTex (x = 0, 1, 2 &amp; 3)

Sharma, Deepak; Kumar, Yogesh; Kumar, Pawan; Nagpal, Vipin; Patnaik, S.; Awana, V. P. S.

doi:10.1016/j.ssc.2020.114097

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…In this regards, materials with topologically non-trivial band structure have proved to be a rich exploring field for condensed matter physicists [1,2]. These materials show a variety of properties, such as high magneto-resistance (MR) [3,4], high surface conductivity [5], and Terahertz (THz) generation [6,7]. Coming to the superconducting properties, these topological materials with non-trivial band structure form a new class of materials named; Topological superconductors (TSc) [2].…”

Section: Introductionmentioning

confidence: 99%

Superconductivity with Topological Non-trivial Surface States in NbC

Karn

Sharma

et al. 2021

J Supercond Nov Magn

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Quantum materials with non-trivial band topology and bulk superconductivity are considered superior materials to realize topological superconductivity. In this regard, we report detailed Density Functional Theory (DFT) calculations for NbC superconductor which shows the topologically non-trivial band structure. Bulk superconductivity at 8.9K is confirmed through DC magnetization measurements under Field Cooled (FC) and Zero Field Cooled (ZFC) protocols. This superconductivity is found to be of type-II nature as revealed by isothermal M-H measurements and thus calculated the Ginzberg-Landau parameter. A large intermediate state is evident from phase diagram, showing NbC to be a strong type-II superconductor. When compared with earlier reports on superconducting NbC, a non-monotonic relationship of critical temperature with lattice parameters is seen. In conclusion, it is clear that NbC is a type-II around 10K superconductor with topological non-trivial surface states.

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