期刊
PHYSICAL REVIEW LETTERS
卷 115, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.216401
关键词
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资金
- JSPS KAKENHI Grant [24244053, 25870231]
- Agence Nationale de la Recherche
- NRF - Korea Government (MSIP) [2015-001948, 2010-00453]
- Grants-in-Aid for Scientific Research [15H02108, 25870231] Funding Source: KAKEN
- National Research Foundation of Korea [2010-00453] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The ratio of the Zeeman splitting to the cyclotron energy (M = Delta E-Z/(h) over bar omega(c)) for holelike carriers in bismuth has been quantified with great precision by many experiments performed during the past five decades. It exceeds 2 when the magnetic field is along the trigonal axis and vanishes in the perpendicular configuration. Theoretically, however, M is expected to be isotropic and equal to unity in a two-band Dirac model. We argue that a solution to this half-a-century-old puzzle can be found by extending the k . p theory to multiple bands. Our model not only gives a quantitative account of the magnitude and anisotropy of M for holelike carriers in bismuth, but also explains its contrasting evolution with antimony doping and pressure, both probed by new experiments reported here. The present results have important implications for the magnitude and anisotropy of M in other systems with strong spin-orbit coupling.
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