Magnetotransport properties of FeSe in fields up to 50 T

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:459

Article; Proceedings Paper

Ovchenkov, Y. A.¹  Chareev, D. A.^2,3,4  Kulbachinskii, V. A.¹  Kytin, V. G.^1,5  Presnov, D. E.^1,6  Skourski, Y.⁷  Volkova, O. S.^1,3,8  Vasiliev, A. N.^1,8,9 

[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[2] Inst Expt Mineral RAS, Chernogolovka 142432, Moscow Region, Russia

[3] Ural Fed Univ, Ekaterinburg 620002, Russia

[4] Kazan Fed Univ, 18 Kremlyovskaya Str, Kazan 420008, Russia

[5] VNIIFTRI, Mendeleyevsk 141570, Moscow Region, Russia

[6] Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[7] Helmholtz Zentrum Dresden Rossendorf, Dresden High Magnet Field Lab HLD EMF, D-01328 Dresden, Germany

[8] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

[9] Natl Res South Ural State Univ, Chelyabinsk 454080, Russia

关键词: High-Tc superconductors;    Galvanomagnetic effects;    Electronic band structure;   

DOI  :  10.1016/j.jmmm.2017.10.108

来源: Elsevier

【 摘 要 】

A study of the magnetotransport properties of a high-quality FeSe crystal in a wide temperature range and in magnetic fields up to 50 T shows that the main electron-like and hole-like bands have very similar values of carrier density and mobility, indicating good electron-hole symmetry in this compound. In addition to the main two bands, there is also a tiny, highly mobile, electron-like band which is responsible for the non-linear behavior of rho(xy)(B) at low temperatures and some other peculiarities of FeSe. We observe the inversion of the rho(xx) temperature coefficient at a magnetic field higher than about 20 T which is an implicit confirmation of the electron-hole symmetry in the main bands. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free