Unusual magnetotransport in holmium monoantimonide

Yi-Yan Wang (王义炎), Lin-Lin Sun (孙琳琳), Sheng Xu (徐升), Yuan Su (苏园), and Tian-Long Xia (夏天龙)

Phys. Rev. B 98, 045137 – Published 27 July 2018

Abstract

We report the magnetotransport properties of HoSb, a semimetal with antiferromagnetic ground state. HoSb shows extremely large magnetoresistance (XMR) and Shubnikov-de Haas (SdH) oscillation at low temperature and high magnetic field. Different from previous reports in other rare earth monopnictides, kinks in $ρ (B)$ and $ρ_{x y} (B)$ curves and the field dependent resistivity plateau are observed in HoSb, which result from the magnetic phase transitions. The fast Fourier transform analysis of the SdH oscillation reveals the split of Fermi surfaces induced by the nonsymmetric spin-orbit interaction. The Berry phase extracted from SdH oscillation indicates the possible nontrivial electronic structure of HoSb in the presence of magnetic field. The Hall measurements suggest that the XMR originates from the electron-hole compensation and high mobility.

Received 7 June 2018

DOI:https://doi.org/10.1103/PhysRevB.98.045137

Physics Subject Headings (PhySH)

Magnetic phase transitions Magnetotransport Quantum transport Topological materials

Magnetic systems Semimetals Single crystal materials

Crystal growth Magnetization measurements Resistivity measurements Shubnikov-de Haas effect

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yi-Yan Wang (王义炎), Lin-Lin Sun (孙琳琳), Sheng Xu (徐升), Yuan Su (苏园), and Tian-Long Xia (夏天龙)^*

Department of Physics, Renmin University of China, Beijing 100872, People's Republic of China
and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, People's Republic of China

^*tlxia@ruc.edu.cn

Interplay of magnetism and transport in HoBi

H.-Y. Yang, J. Gaudet, A. A. Aczel, D. E. Graf, P. Blaha, B. D. Gaulin, and Fazel Tafti

Phys. Rev. B 98, 045136 (2018)

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Issue

Vol. 98, Iss. 4 — 15 July 2018

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Images

Figure 1
(a) Single crystal XRD pattern of HoSb. The inset of (a) shows the NaCl-type crystal structure of HoSb. Red and blue balls represent Ho and Sb atoms, respectively. (b) Powder XRD pattern of HoSb refined using TOPAS. Red circle and black line represent the observed curve and calculated curve, respectively. Blue line denotes the difference curve. The vertical pink lines show the positions of Bragg peaks of HoSb. Inset presents a selected single crystal of HoSb.
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Figure 2
(a) Temperature dependence of resistivity of HoSb (Sample 1, RRR = 32) at different applied magnetic fields. The inset displays zero-field resistivity in the low-temperature region. (b) Temperature-dependent resistivity with the transverse coordinate in the form of logarithm. (c) $\partial ρ / \partial T$ as a function of temperature at various fields from 4 T to 14 T. Inset shows the definitions of $T_{i}$ and $T_{m}$ . (d) $T_{m}$ and $T_{i}$ plotted as a function of field.
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Figure 3
(a) Magnetic field dependence of MR (Sample 2, RRR = 41) at different temperatures. Inset: The oscillatory part of resistivity plotted as a function of 1/ $B$ . (b) The fast Fourier transform (FFT) spectra of the SdH oscillation. Inset: The possible projection of Fermi surfaces of HoSb derived from the SdH oscillation. (c) Temperature-dependent FFT amplitudes of the frequencies, fitted with the thermal factor in Lifshitz-Kosevich (LK) formula. (d) The SdH oscillation at 2.65 K. The red solid line is the fitting result using the multiband LK formula. (e) The extracted oscillating patterns of $F (α_{1}^{'})$ and $F (α_{2}^{'})$ and the fit using two band LK formula. (f) The extracted oscillating patterns of $F (α_{1}^{''})$ and $F (α_{2}^{''})$ and the fit using two band LK formula.
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Figure 4
(a) The magnetic field dependence of Hall resistivity (Sample 3) at various temperatures. (b) The Hall resistivity at 3 K and the fit (red solid line) using two band model. (c), (d) The temperature dependent concentration and mobility. The data at high temperatures was analyzed by single band model. (e) The fit to the field dependent MR (Sample 2) at 2.65 K using $MR \propto B^{n}$ . Inset: The fit only to the data in high field (7–14 T). (f) Magnetization plotted as a function of field with the field parallel to [001]. (g) The change of magnetic structure with the increase of field.
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Figure 5
Magnetic properties of HoSb (Sample 4) with the magnetic field parallel to the direction of [001]. (a) Temperature dependence of magnetization at low field 3 Oe and 10 Oe. (b) Temperature dependence of magnetization at high field 4 T and 7 T. (c) Temperature dependence of magnetization at various fields. (d) The magnetic phase diagram of HoSb.
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