ORCID Profile
0000-0002-4908-8600
Current Organisation
CSIR-NPL
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Publisher: American Chemical Society (ACS)
Date: 02-07-2022
Publisher: Springer Science and Business Media LLC
Date: 08-03-2022
Publisher: Elsevier BV
Date: 10-2020
Publisher: Springer Science and Business Media LLC
Date: 19-08-2021
Publisher: IOP Publishing
Date: 11-01-2018
Publisher: Springer Science and Business Media LLC
Date: 17-01-2023
Publisher: Springer Science and Business Media LLC
Date: 04-03-2021
DOI: 10.1007/S42452-021-04397-8
Abstract: We report the magneto-conductivity analysis of Bi 2 Se 3 single crystal at different temperatures in a magnetic field range of ± 14 T. The single crystals are grown by the self-flux method and characterized through X-ray diffraction, Scanning Electron Microscopy, and Raman Spectroscopy. The single crystals show magnetoresistance (MR%) of around 380% at a magnetic field of 14 T and a temperature of 5 K. The Hikami–Larkin–Nagaoka (HLN) equation has been used to fit the magneto-conductivity (MC) data. However, the HLN fitted curve deviates at higher magnetic fields above 1 T, suggesting that the role of surface-driven conductivity suppresses with an increasing magnetic field. This article proposes a speculative model comprising of surface-driven HLN and added quantum diffusive and bulk carriers-driven classical terms. The model successfully explains the MC of the Bi 2 Se 3 single crystal at various temperatures (5–200 K) and applied magnetic fields (up to 14 T).
Publisher: IOP Publishing
Date: 13-07-2022
Abstract: Superconductivity in topological materials has drawn significant interest from the scientific community as these materials provide a hint of the existence of Majorana fermions conceived from the quantized thermal conductivity, a zero-biased conduction peak and the anomalous Josephson effect. In this review, we make a systematic study of recent advances in the field of topological superconductivity. The article comprises of both bulk systems as well as heterostructures. A brief description of Majorana fermions and their relationship with topological superconductors and heterostructures is also carried out. This review also consists of details of key experimental techniques to characterize candidates for topological superconductivity. Moreover, we summarize the potential material candidate that may demonstrate topological superconductivity. We also consider some intrinsic odd-parity superconductors, non-centrosymmetric, centrosymmetric superconductors, doped topological insulators, doped topological crystalline insulators and some other materials that are expected to show superconductivity along with topological non-trivial states in bulk form. The effects of pressure, emergence of superconductivity in topological materials and muon spin rotation studies are also summarized in this article.
No related grants have been discovered for Veer Awana.