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Updated: Oct 6, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
The Singularity Paramagnetic Peak of Bi0.3Sb1.7Te3 with p-type Surface State
Shiu-Ming Huang1,2,3, Pin-Cing Wang4, Pin-Cyuan Chen4
1Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan. smhuang@mail.nsysu.edu.tw.
Abstract:
The magnetization measurement was performed in the Bi0.3Sb1.7Te3 single crystal. The magnetic susceptibility revealed a paramagnetic peak independent of the experimental temperature variation. It is speculated to be originated from the free-aligned spin texture at the Dirac point. The ARPES reveals that the Fermi level lies below the Dirac point. The Fermi wavevector extracted from the de Haas-van Alphen oscillation is consistent with the energy dispersion in the ARPES. Our experimental results support that the observed paramagnetic peak in the susceptibility curve does not originate from the free-aligned spin texture at the Dirac point.
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