TY - JOUR
T1 - Quantitative evaluation of Dirac physics in PbTe
AU - Akiba, Kazuto
AU - Miyake, Atsushi
AU - Sakai, Hideaki
AU - Katayama, Keisuke
AU - Murakawa, Hiroshi
AU - Hanasaki, Noriaki
AU - Takaoka, Sadao
AU - Nakanishi, Yoshiki
AU - Yoshizawa, Masahito
AU - Tokunaga, Masashi
N1 - Funding Information:
We thank Y. Fuseya for valuable discussions and comments. The angle-resolved resistivity measurements were carried out using facilities of the Electromagnetic Measurements Section, The Institute for Solid State Physics, The University of Tokyo. This work is supported by PRESTO, JST (No. JPMJPR16R2), Grant-in-Aid for Young Scientists A (No. 16H06015), and the Asahi Glass Foundation. K.A. was supported by Grant-in-Aid for JSPS Research Fellow (16J04781).
Funding Information:
This work is supported by PRESTO, JST (No. JPMJPR16R2), Grant-in-Aid for Young Scientists A (No. 16H06015), and the Asahi Glass Foundation. K.A. was supported by Grant-in-Aid for JSPS Research Fellow (16J04781).
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/9/24
Y1 - 2018/9/24
N2 - The magnetic field dependence of electronic transport, magnetic, and elastic properties in single crystals of PbTe were investigated in high magnetic fields up to 55 T. The magnetoresistance, magnetization, ultrasonic attenuation, and sound velocity showed clear quantum oscillations with pronounced Zeeman splitting, which causes a large second harmonic in the frequency spectra. The ratio of the Zeeman to the cyclotron energy, which is regarded as an index of "Diracness" [H. Hayasaka and Y. Fuseya, J. Phys.: Condens. Matter 28, 31LT01 (2016)10.1088/0953-8984/28/31/31LT01], was determined to be 0.52 and 0.57 in samples with different carrier densities. We also pointed out that the effect of Zeeman splitting seriously affects the Landau-level fan diagram analysis, which is widely used to extract the nontrivial Berry's phase from the quantum oscillations.
AB - The magnetic field dependence of electronic transport, magnetic, and elastic properties in single crystals of PbTe were investigated in high magnetic fields up to 55 T. The magnetoresistance, magnetization, ultrasonic attenuation, and sound velocity showed clear quantum oscillations with pronounced Zeeman splitting, which causes a large second harmonic in the frequency spectra. The ratio of the Zeeman to the cyclotron energy, which is regarded as an index of "Diracness" [H. Hayasaka and Y. Fuseya, J. Phys.: Condens. Matter 28, 31LT01 (2016)10.1088/0953-8984/28/31/31LT01], was determined to be 0.52 and 0.57 in samples with different carrier densities. We also pointed out that the effect of Zeeman splitting seriously affects the Landau-level fan diagram analysis, which is widely used to extract the nontrivial Berry's phase from the quantum oscillations.
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U2 - 10.1103/PhysRevB.98.115144
DO - 10.1103/PhysRevB.98.115144
M3 - Article
AN - SCOPUS:85053883127
SN - 2469-9950
VL - 98
JO - Physical Review B
JF - Physical Review B
IS - 11
M1 - 115144
ER -