Please use this identifier to cite or link to this item: http://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/2583
Title: First principles investigation of topological phase in XMR material TmSb under hydrostatic pressure
Authors: Wadhwa, P.
Kumar, S.
Shukla, A.
Kumar, R.
Keywords: topological insulators
topological semi-metals
topological phase transitions
density functional theory
Issue Date: 30-Aug-2021
Abstract: In this article, we report emergence of topological phase in extremely large magnetoresistance (XMR) material TmSb under hydrostatic pressure using first principles calculations. We find that TmSb, a topologically trivial semimetal, undergoes a topological phase transition with band inversion at X point without breaking any symmetry under a hydrostatic pressure of 12 GPa. At 15 GPa, it again becomes topologically trivial with band inversion at Γ as well as X point. We find that the pressures corresponding to the topological phase transitions are far below the pressure corresponding to structural phase transition at 25.5 GPa. The reentrant behaviour of topological quantum phase with hydrostatic pressure would help in finding a correlation between topology and XMR effects through experiments.
URI: http://localhost:8080/xmlui/handle/123456789/2583
Appears in Collections:Year-2019

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