GIST Scholar
College of Natural Sciences
Department of Physics and Photon Science
1. Journal Articles
Enhanced infrared magneto-optical response of the nonmagnetic semiconductor BiTeI driven by bulk rashba splitting
- Type
- Article
- Citation
- Physical Review Letters, v.109, no.16
- Issued Date
- 2012-12
- Abstract
- We study the magneto-optical (MO) response of the polar semiconductor BiTeI with giant bulk Rashba spin splitting at various carrier densities. Despite being nonmagnetic, the material is found to yield a huge MO activity in the infrared region under moderate magnetic fields (up to 3T). Our first-principles calculations show that the enhanced MO response of BiTeI comes mainly from the intraband transitions between the Rashba-split bulk conduction bands. These transitions connecting electronic states with opposite spin directions become active due to the presence of strong spin-orbit interaction and give rise to distinct features in the MO spectra with a systematic doping dependence. We predict an even more pronounced enhancement in the low-energy MO response and dc Hall effect near the crossing (Dirac) point of the conduction bands. © 2012 American Physical Society.
- Publisher
- American Physical Society
- ISSN
- 0031-9007
- Appears in Collections:
- Department of Physics and Photon Science > 1. Journal Articles
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