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Extremely large magnetoresistance and Kohler's rule in PdSn4 : A complete study of thermodynamic, transport, and band-structure properties
Ames Laboratory Accepted Manuscripts
  • Na Hyan Jo, Iowa State University and Ames Laboratory
  • Yun Wu, Iowa State University and Ames Laboratory
  • Lin-Lin Wang, Ames Laboratory
  • Peter Orth, Iowa State University and Ames Laboratory
  • Savannah S. Downing, Iowa State University and Ames Laboratory
  • Soham Manni, Iowa State University and Ames Laboratory
  • Dixiang Mou, Iowa State University and Ames Laboratory
  • Duane D. Johnson, Iowa State University and Ames Laboratory
  • Adam Kaminski, Iowa State University and Ames Laboratory
  • Sergey L. Bud’ko, Iowa State University and Ames Laboratory
  • Paul C. Canfield, Iowa State University and Ames Laboratory
Publication Date
10-15-2017
Department
Chemistry; Materials Science and Engineering; Ames Laboratory
Report Number
IS-J 9476
DOI
10.1103/PhysRevB.96.165145
Journal Title
Physical Review B
Abstract

The recently discovered material PtSn4 is known to exhibit extremely large magnetoresistance (XMR) that also manifests Dirac arc nodes on the surface. PdSn4 is isostructural to PtSn4 with the same electron count. We report on the physical properties of high-quality single crystals of PdSn4 including specific heat, temperature- and magnetic-field-dependent resistivity and magnetization, and electronic band-structure properties obtained from angle-resolved photoemission spectroscopy (ARPES). We observe that PdSn4 has physical properties that are qualitatively similar to those of PtSn4, but find also pronounced differences. Importantly, the Dirac arc node surface state of PtSn4 is gapped out for PdSn4. By comparing these similar compounds, we address the origin of the extremely large magnetoresistance in PdSn4 and PtSn4; based on detailed analysis of the magnetoresistivity ρ(H,T), we conclude that neither the carrier compensation nor the Dirac arc node surface state are the primary reason for the extremely large magnetoresistance. On the other hand, we find that, surprisingly, Kohler's rule scaling of the magnetoresistance, which describes a self-similarity of the field-induced orbital electronic motion across different length scales and is derived for a simple electronic response of metals to an applied magnetic field is obeyed over the full range of temperatures and field strengths that we explore.

Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
Citation Information
Na Hyan Jo, Yun Wu, Lin-Lin Wang, Peter Orth, et al.. "Extremely large magnetoresistance and Kohler's rule in PdSn4 : A complete study of thermodynamic, transport, and band-structure properties" Vol. 96 (2017) p. 165145
Available at: http://works.bepress.com/paul_canfield/101/