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Galvano-thermomagnetic properties of Bi/sub 1-x/Sb/sub x/ nanowires at semiconductor-semimetal transition induced by elastic elongation

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dc.contributor.author NIKOLAEVA, A.
dc.contributor.author BODIUL, P.
dc.contributor.author KONOPKO, L.
dc.contributor.author PARA, G.
dc.date.accessioned 2022-02-22T12:51:08Z
dc.date.available 2022-02-22T12:51:08Z
dc.date.issued 2002
dc.identifier.citation NIKOLAEVA, A., BODIUL, P., KONOPKO, L. et al. Galvano-thermomagnetic properties of Bi/sub 1-x/Sb/sub x/ nanowires at semiconductor-semimetal transition induced by elastic elongation. In: International Conference on Thermoelectrics: proc. of IEEE ICT - 2002, 29-29 Aug. 2002, Long Beach, USA, 2002, pp. 272-275. ISBN 0-7803-7683-8. en_US
dc.identifier.isbn 0-7803-7683-8
dc.identifier.uri https://doi.org/10.1109/ICT.2002.1190317
dc.identifier.uri http://repository.utm.md/handle/5014/19457
dc.description Acces full text - https://doi.org/10.1109/ICT.2002.1190317 en_US
dc.description.abstract In the work thin single crystal (0.3 < d < 5 /spl mu/m) wires Bi/sub 1-x/Sb/sub x/ obtained by the liquid phase casting in a glass coating were investigated under elastic deformations up to 2-3% relative elongation in the temperature range 4.2-300 K. In the nondeformed state the wires are semiconductor with minimal indirect gap and have a characteristic semiconductor dependence on T. Under elastic stretch, the semiconductor-semimetal transition was realized, accompanied by the sample metallization and appearance of the Shubnikov-de Haas oscillations from L charge carriers. The decrease of the resistance here 40-50% is observed, and of the thermopower absolute value near 15-20% decreases. Both values depend on wire diameter d. The longitudinal magneto-Seebeck coefficient in the magnetic field up to 0.3 T was measured. It is shown that elastic stretch and longitudinal magnetic field lead to 30-40% increase of the power factor /spl alpha//sup 2//spl sigma/ in the temperature range 150-200 K and at 77 K in the longitudinal magnetic field up to 0.07 T. The temperature region wherein the power factor increase takes place, depends significantly on wire diameter d. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject single crystal wires en_US
dc.subject wires en_US
dc.title Galvano-thermomagnetic properties of Bi/sub 1-x/Sb/sub x/ nanowires at semiconductor-semimetal transition induced by elastic elongation en_US
dc.type Article en_US


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