magnetic quantum oscillations
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2021 ◽  
Vol 118 (29) ◽  
pp. e2023027118
Author(s):  
Sang-Eon Lee ◽  
Myeong-jun Oh ◽  
Sanghyun Ji ◽  
Jinsu Kim ◽  
Jin-Hyeon Jun ◽  
...  

With the emergence of Dirac fermion physics in the field of condensed matter, magnetic quantum oscillations (MQOs) have been used to discern the topology of orbits in Dirac materials. However, many previous researchers have relied on the single-orbit Lifshitz–Kosevich (LK) formula, which overlooks the significant effect of degenerate orbits on MQOs. Since the single-orbit LK formula is valid for massless Dirac semimetals with small cyclotron masses, it is imperative to generalize the method applicable to a wide range of Dirac semimetals, whether massless or massive. This report demonstrates how spin-degenerate orbits affect the phases in MQOs of three-dimensional massive Dirac semimetal, NbSb2. With varying the direction of the magnetic field, an abrupt π phase shift is observed due to the interference between the spin-degenerate orbits. We investigate the effect of cyclotron mass on the π phase shift and verify its close relation to the phase from the Zeeman coupling. We find that the π phase shift occurs when the cyclotron mass is half of the electron mass, indicating the effective spin gyromagnetic ratio as gs = 2. Our approach is not only useful for analyzing MQOs of massless Dirac semimetals with a small cyclotron mass but also can be used for MQOs in massive Dirac materials with degenerate orbits, especially in topological materials with a sufficiently large cyclotron mass. Furthermore, this method provides a useful way to estimate the precise gs value of the material.



2020 ◽  
Vol 102 (8) ◽  
Author(s):  
Meng Lyu ◽  
Junsen Xiang ◽  
Zhenyu Mi ◽  
Hengcan Zhao ◽  
Zhen Wang ◽  
...  


2019 ◽  
Vol 9 (3) ◽  
Author(s):  
Junsen Xiang ◽  
Sile Hu ◽  
Zhida Song ◽  
Meng Lv ◽  
Jiahao Zhang ◽  
...  


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
A. Alexandradinata ◽  
Chong Wang ◽  
Wenhui Duan ◽  
Leonid Glazman


2017 ◽  
Vol 31 (25) ◽  
pp. 1745015
Author(s):  
V. V. Kabanov

Energy spectrum of electrons (holes) doped into two-dimensional (2D) antiferromagnetic (AF) semiconductors is quantized in an external magnetic field of arbitrary direction. A peculiar dependence of de Haas–van Alphen (dHvA) magneto-oscillation amplitudes on the azimuthal in-plane angle from the magnetization direction and on the polar angle from the out-of-plane direction is found. The angular dependence of the amplitude is different if the measurements are performed in the field above and below of the spin-flop field.



2017 ◽  
Vol 903 ◽  
pp. 012038 ◽  
Author(s):  
Filip Orbanić ◽  
Mario Novak ◽  
Nikola Biliškov ◽  
Sanda Pleslić ◽  
Ivan Kokanović


2014 ◽  
Vol 40 (4) ◽  
pp. 377-383 ◽  
Author(s):  
M. V. Kartsovnik ◽  
V. N. Zverev ◽  
D. Andres ◽  
W. Biberacher ◽  
T. Helm ◽  
...  


2012 ◽  
Vol 400 (2) ◽  
pp. 022065
Author(s):  
A Maniv ◽  
T Maniv ◽  
V Zhuravlev ◽  
B Bergk ◽  
J Wosnitza ◽  
...  


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