Exceptional magneto-resistance in 3D Dirac semimetal Bi0.96Sb0.04

P. Kumar; V. Nagpal; Sudesh; S. Patnaik

doi:10.1063/1.4980815

Exceptional magneto-resistance in 3D Dirac semimetal Bi_0.96Sb_0.04

P. Kumar, V. Nagpal, Sudesh, S. Patnaik

Jawaharlal Nehru University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Recent experimental evidence for Weyl fermions in topological semimetals has attracted considerable attention. These materials are three-dimensional analogue of graphene. The present work is motivated by the recent prediction of Weyl semi-metallic phase in Bi_1-xSb_x alloys. In this paper we present the electronic transport properties studied under high applied magnetic fields in Bi_0.96Sb_0.04 alloys. The sample exhibits extremely high magneto-resistance; MR(5 K, 8 T) = 9.8×10⁴ %. This value is comparable to the MR observed in recently discovered other members of these emergent materials. Most importantly, this composition shows large MR at room temperature, MR (300 K, 8 T) = 435%, which is almost twice to that observed in Dirac semimetal Cd₃As₂ (= 200 % at 14.5 T) and Weyl semimetal NbP (= 250% at 9 T). We also discuss single crystal growth technique as well as Hall measurement data.

Original language	English
Title of host publication	DAE Solid State Physics Symposium 2016
Editors	Surendra Singh, Saibal Basu, Shovit Bhattacharya, Amitabh Das
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735415003
DOIs	https://doi.org/10.1063/1.4980815
State	Published - 19 May 2017
Externally published	Yes
Event	61st DAE Solid State Physics Symposium - Bhubaneswar, Odisha, India Duration: 26 Dec 2016 → 30 Dec 2016

Publication series

Name	AIP Conference Proceedings
Volume	1832
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	61st DAE Solid State Physics Symposium
Country/Territory	India
City	Bhubaneswar, Odisha
Period	26/12/16 → 30/12/16

Bibliographical note

Publisher Copyright:
© 2017 Author(s).

Keywords

Magneto-resistance
Transport properties
Weyl semimetal

Access to Document

10.1063/1.4980815

Cite this

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title = "Exceptional magneto-resistance in 3D Dirac semimetal Bi0.96Sb0.04",

abstract = "Recent experimental evidence for Weyl fermions in topological semimetals has attracted considerable attention. These materials are three-dimensional analogue of graphene. The present work is motivated by the recent prediction of Weyl semi-metallic phase in Bi1-xSbx alloys. In this paper we present the electronic transport properties studied under high applied magnetic fields in Bi0.96Sb0.04 alloys. The sample exhibits extremely high magneto-resistance; MR(5 K, 8 T) = 9.8×104 %. This value is comparable to the MR observed in recently discovered other members of these emergent materials. Most importantly, this composition shows large MR at room temperature, MR (300 K, 8 T) = 435%, which is almost twice to that observed in Dirac semimetal Cd3As2 (= 200 % at 14.5 T) and Weyl semimetal NbP (= 250% at 9 T). We also discuss single crystal growth technique as well as Hall measurement data.",

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Kumar, P, Nagpal, V, Sudesh & Patnaik, S 2017, Exceptional magneto-resistance in 3D Dirac semimetal Bi_0.96Sb_0.04. in S Singh, S Basu, S Bhattacharya & A Das (eds), DAE Solid State Physics Symposium 2016., 140033, AIP Conference Proceedings, vol. 1832, American Institute of Physics Inc., 61st DAE Solid State Physics Symposium, Bhubaneswar, Odisha, India, 26/12/16. https://doi.org/10.1063/1.4980815

Exceptional magneto-resistance in 3D Dirac semimetal Bi_0.96Sb_0.04. / Kumar, P.; Nagpal, V.; Sudesh et al.
DAE Solid State Physics Symposium 2016. ed. / Surendra Singh; Saibal Basu; Shovit Bhattacharya; Amitabh Das. American Institute of Physics Inc., 2017. 140033 (AIP Conference Proceedings; Vol. 1832).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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