Journal
PHYSICAL REVIEW B
Volume 84, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.035301
Keywords
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Funding
- JSPS
- MEXT [22103004]
- AFOSR (AOARD) [10-4103]
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A distinguishing feature of Dirac fermions is the Berry phase of p associated with their cyclotron motions. Since this Berry phase can be experimentally assessed by analyzing the Landau-level fan diagram of the Shubnikov-de Haas (SdH) oscillations, such an analysis has been widely employed in recent transport studies of topological insulators to elucidate the Dirac nature of the surface states. However, the reported results have usually been unconvincing. Here we show a general scheme for describing the phase factor of the SdH oscillations in realistic surface states of topological insulators, and demonstrate how one can elucidate the Dirac nature in real experimental data.
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