Abstract
Shubnikov-de Haas frequencies were measured in highly degenerate n-type Bi2Se3 having a higher carrier density (∼9 × 1025m-3) than previously reported. The Fermi surface was found to be elongated along the trigonal axis, fitting a spheroidal model with an axial ratio of 5.0 for angles up to θ = 45°. Comparison of the number of carriers obtained from Hall measurements with that obtained from the Shubnikov-de Haas measurement supports the contention that the lowest conduction band minimum is a single surface located in the center of the Brillouin zone. The higher effective mass (0.25 m0) found for these carrier concentrations indicates that the band is non-parabolic.
Original language | English (US) |
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Pages (from-to) | 257-263 |
Number of pages | 7 |
Journal | Solid State Communications |
Volume | 13 |
Issue number | 3 |
DOIs | |
State | Published - Aug 1 1973 |
Externally published | Yes |
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry