Isotope effect on the phonon-drag component of the thermoelectric power of germanium

A. V. Inyushkin, A. N. Taldenkov, V. I. Ozhogin, Kohei M Itoh, E. E. Haller

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have measured the thermoelectric power of several germanium single crystals with different isotopic compositions: natural, 96.3%, and 99.99% enriched 70Ge. N- and p-type Ge samples with the net concentration of electrically active impurities <2 × 1013 cm3 were studied. Our experimental data show a decrease of thermopower with an increase in isotopic mass disorder. This isotope effect is evident at temperatures below approximately 70 K where a phonon-drag part of the thermopower dominates. At high temperatures, in the diffusion regime, the thermopower does not correlate with the isotopic composition within experimental error. The observed isotope effect can be explained with a special phonon-drag contribution induced by a momentum transfer from thermal phonons to low-energy phonons in the enriched samples.

Original languageEnglish
Article number153203
Pages (from-to)1532031-1532034
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number15
Publication statusPublished - 2003 Oct

Fingerprint

Germanium
Thermoelectric power
Isotopes
isotope effect
drag
Drag
germanium
phonons
induced drag
Phonons
momentum transfer
disorders
impurities
Momentum transfer
single crystals
Chemical analysis
Single crystals
Impurities
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Inyushkin, A. V., Taldenkov, A. N., Ozhogin, V. I., Itoh, K. M., & Haller, E. E. (2003). Isotope effect on the phonon-drag component of the thermoelectric power of germanium. Physical Review B - Condensed Matter and Materials Physics, 68(15), 1532031-1532034. [153203].

Isotope effect on the phonon-drag component of the thermoelectric power of germanium. / Inyushkin, A. V.; Taldenkov, A. N.; Ozhogin, V. I.; Itoh, Kohei M; Haller, E. E.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 15, 153203, 10.2003, p. 1532031-1532034.

Research output: Contribution to journalArticle

Inyushkin, AV, Taldenkov, AN, Ozhogin, VI, Itoh, KM & Haller, EE 2003, 'Isotope effect on the phonon-drag component of the thermoelectric power of germanium', Physical Review B - Condensed Matter and Materials Physics, vol. 68, no. 15, 153203, pp. 1532031-1532034.
Inyushkin, A. V. ; Taldenkov, A. N. ; Ozhogin, V. I. ; Itoh, Kohei M ; Haller, E. E. / Isotope effect on the phonon-drag component of the thermoelectric power of germanium. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 68, No. 15. pp. 1532031-1532034.
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