Extremely large magnetoresistance in the nonmagnetic semimetal YBi. Issue 37 (6th September 2018)

• Record Type: Journal Article
• Authors: Qian, B.; Tang, F.; Ruan, Y. R.; Fang, Y.; Han, Z. D.; Jiang, X. F.; Zhang, J.-M.; Chen, S. Y.; Wang, D. H.
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 37(2018)
• Page Start: 10020
• Page End: 10029
• Publication Date: 2018-09-06
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc02839g
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Extreme magnetoresistance in nonmagnetic compounds has received considerable attention because this phenomenon challenges the classical understanding of electron transport under a magnetic field. Abstract : Extreme magnetoresistance in nonmagnetic compounds has received considerable attention because this phenomenon challenges the classical understanding of electron transport under a magnetic field. In this study, YBi, which crystallizes in a NaCl-type structure, was synthesized via self-flux method to study its magnetotransport properties and electronic structure. Under zero magnetic field, metallic behavior was observed in the whole temperature interval ranging from 2 to 300 K. Interestingly, extreme magnetoresistance and a resistivity plateau developed when the applied magnetic field was increased; the magnetoresistance reaches 0.8 × 10 5 % at 9 T and 2 K. Multiple bands including one electron pocket and two hole pockets revealed by Kohler's rule and first-principle calculations were responsible for the transport processes. Moreover, the hidden band inversion was also uncovered, which suggests the existence of a topological nature in this compound. The contribution of a single Fermi pocket and the combination thereof for magnetotransport indicate that electron–hole compensation plays an important role in determining the electric properties. All these results point towards YBi being a semimetal member of the RPn family (R = rare earth; Pn = Sb and Bi).