Jpn. J. Appl. Phys. 21 (1982) pp. 1315-1322  |Next Article|  |Table of Contents|
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Shubnikov-de Haas Measurements in N-Type Pb_1-xSn_xTe

Yutaka Takafuji and Shin-ichiro Narita

(Received April 9, 1982; accepted for publication June 19, 1982)

Relatively large n-type Pb_1-xSn_xTe single crystals with various x values (x=0–0.28) were prepared and the Shubnikov-de Haas oscillations were measured. The results indicate that the Fermi surface consists of four [111] spheroids whose anisotropies increase with decreasing band gap. The effective mass and effective g^*-values of the conduction band were estimated as functions of the alloy composition, and the results are analyzed by a simple two-band non-parabolic model, which gives the transverse momentum matrix element P_⊥=√0.58(1+0.211x)/2, and the longitudinal momentum matrix element P_//=√0.046(1-0.142x)/2, both in atomic units (a.u.).

URL: http://jjap.jsap.jp/link?JJAP/21/1315/
DOI: 10.1143/JJAP.21.1315

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