Chiral electronic excitations in the quasi-two-dimensional Rashba system BiTeI
Chiral electronic excitations in the quasi-two-dimensional Rashba system BiTeI
复制标题
准二维 Rashba 系统 BiTeI 中的手性电子激发
DOI:
10.1103/physrevb.105.l161105
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发表时间:
2022
影响因子:
3.7
通讯作者:
Blumberg, G.
中科院分区:
文献类型:
--
作者:
Lee, A. C.;Peng, B.;Du, K.;Kung, H.-H.;Monserrat, B.;Cheong, S. W.;Won, C. J.;Blumberg, G.
The optical transitions between spin-polarized bands of the quasi-two-dimensional Rashba system BiTeI are investigated using polarization-resolved resonant Raman spectroscopy. We detect chiral excitations between states with opposite helicity and compare spectra to calculations within a three-band model. Using the resonant Raman excitation profile, we deduce the Rashba parameters and band gaps of the higher conduction bands near the Fermi level, and compare the parameters to values obtained byab initiodensity functional theory.
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