Magnetic field effects on the phonon thermal electromotive force in n-Bi-Sb semiconducting alloys

N. A. Red'ko; V. D. Kagan; N. A. Rodionov; V. I. Pol'shin

doi:10.1134/1.1600803

Magnetic field effects on the phonon thermal electromotive force in n-Bi-Sb semiconducting alloys

N. A. Red'ko^*
, V. D. Kagan
, N. A. Rodionov
, V. I. Pol'shin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The phonon thermal electromotive force component α₂₂ (∇T∥ C₁) prevails in n-Bi_1-xSb_x (0.07 ≤ x ≤ 0.16) semiconducting alloys at low temperatures. This component increases by almost an order of magnitude in a classically strong transverse magnetic field H with H ∥ C₃, which results in an increase in thermoelectric efficiency. The transverse Nernst-Ettingshausen coefficient Q_12,3 (∇r∥ C₁, H ∥ C₃) changes sign from negative at T> 10 K to positive at T< 10 K. The observed characteristics of the phonon thermal electromotive force and the phonon transverse Nernst-Ettingshausen coefficient are explained in terms of the theory of electron-phonon drag for electrons with a strongly anisotropic spectrum.

Original language	English
Pages (from-to)	116-126
Number of pages	11
Journal	Journal of Experimental and Theoretical Physics
Volume	97
Issue number	1
DOIs	https://doi.org/10.1134/1.1600803
State	Published - Jul 2003
Externally published	Yes

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abstract = "The phonon thermal electromotive force component α22 (∇T∥ C1) prevails in n-Bi1-xSbx (0.07 ≤ x ≤ 0.16) semiconducting alloys at low temperatures. This component increases by almost an order of magnitude in a classically strong transverse magnetic field H with H ∥ C3, which results in an increase in thermoelectric efficiency. The transverse Nernst-Ettingshausen coefficient Q12,3 (∇r∥ C1, H ∥ C3) changes sign from negative at T> 10 K to positive at T< 10 K. The observed characteristics of the phonon thermal electromotive force and the phonon transverse Nernst-Ettingshausen coefficient are explained in terms of the theory of electron-phonon drag for electrons with a strongly anisotropic spectrum.",

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AU - Pol'shin, V. I.

PY - 2003/7

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AB - The phonon thermal electromotive force component α22 (∇T∥ C1) prevails in n-Bi1-xSbx (0.07 ≤ x ≤ 0.16) semiconducting alloys at low temperatures. This component increases by almost an order of magnitude in a classically strong transverse magnetic field H with H ∥ C3, which results in an increase in thermoelectric efficiency. The transverse Nernst-Ettingshausen coefficient Q12,3 (∇r∥ C1, H ∥ C3) changes sign from negative at T> 10 K to positive at T< 10 K. The observed characteristics of the phonon thermal electromotive force and the phonon transverse Nernst-Ettingshausen coefficient are explained in terms of the theory of electron-phonon drag for electrons with a strongly anisotropic spectrum.

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Magnetic field effects on the phonon thermal electromotive force in n-Bi-Sb semiconducting alloys

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