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19 April 2024 |
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Large non-saturating magnetoresistance of Sb2Se2Te in high magnetic fields up to 31 T | | K. Shrestha
; V. Marinova
; D. Graf
; B. Lorenz
; C. W. Chu
; | | Date: |
10 Apr 2017 | | Abstract: | We have studied the magnetotransport properties of a Sb2Se2Te single crystal.
Magnetoresistance (MR) is large and reaches to a value of 1100% at B=31 T
without sign of saturation. The mobility estimated from the Drude model is 700
cm^2V^-1s^-1. Shubnikov de Haas oscillations are observed in applied magnetic
fields above B=15 T. The analyses of quantum oscillation frequencies at
different angles of rotation, as well as the presence of multiple frequencies
in the frequency spectrum, suggest that Sb2Se2Te possesses a three-dimensional
Fermi surface that is rather complex. Magnetoconductance shows a weak
antilocalization (WAL) effect. The WAL curves do not scale with the normal
components of magnetic fields, which proves that Sb2Se2Te is a topologically
trivial system. The large MR in Sb2Se2Te is not due to the presence of a linear
Dirac dispersion as observed in many topological systems, and it likely has a
classical origin due to the mobility fluctuation and breaking of crystal
structure symmetry. The large MR of Sb2Se2Te is suitable for utilization in
electronic instruments such as a computer hard disc, high field magnetic
sensors, and memory devices. | | Source: | arXiv, 1704.2682 | | Services: | Forum | Review | PDF | Favorites | |
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