First observation of angle-dependent Stark cyclotron resonance in bulk crystals: High-electric-field interlayer magnetotransport in a layered organic conductor
✍ Scribed by A. Kumagai; T. Konoike; K. Uchida; T. Osada
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 215 KB
- Volume
- 405
- Category
- Article
- ISSN
- 0921-4526
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✦ Synopsis
We report a novel angle-dependent magnetotransport phenomenon in layered conductors under strong interlayer electric fields. Interlayer conduction shows the Stark cyclotron resonance (SCR) when electron orbital motion becomes periodic in k-space. The SCR amplitude oscillates depending on magnetic field orientations. The conventional angle-dependent magnetoresistance oscillation (AMRO) switches to the angle-dependent SCR in high electric fields. We predict angle-dependent SCR due to electron orbital motion in layered conductors with coherent interlayer coupling. In addition, we demonstrate the expected switching from conventional AMRO to angle-dependent SCR in high electric fields using an organic conductor a-(BEDT-TTF) 2 NH 4 Hg(SCN) 4 . This is the first observation of the SCR with orbital origin in bulk crystals.