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Topological Transitions in the Strain Dependences of Thermopower and Resistance in Nanowires Based on Bi –Sn

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dc.contributor.author NIKOLAEVA, Albina A.
dc.contributor.author KONOPKO, Leonid A.
dc.contributor.author PARA, Gheorghe I.
dc.contributor.author TSURKAN, Ana K.
dc.contributor.author BOTNARY, Oxana V.
dc.date.accessioned 2019-11-07T08:27:36Z
dc.date.available 2019-11-07T08:27:36Z
dc.date.issued 2011
dc.identifier.citation NIKOLAEVA, Albina A., KONOPKO, Leonid A., PARA, Gheorghe I. et al. Topological Transitions in the Strain Dependences of Thermopower and Resistance in Nanowires Based on Bi –Sn. In: Microelectronics and Computer Science: proc. of the 7th intern. Conf., September 22-24, 2011. Chişinău, 2011, vol. 1, pp. 133-135. ISBN 978-9975-45-174-1. en_US
dc.identifier.isbn 978-9975-45-174-1
dc.identifier.uri http://repository.utm.md/handle/5014/6302
dc.description.abstract We studied the strain dependences of the resistance and thermopower of nanowires of Bi and its alloys with Sn in conditions of an anisotropic elastic strain with values of 2% elongation, which is one order of magnitude higher than the value achieved in the bulk samples. Glass-coated wires with diameters ranging from 150 nm to a few microns were prepared by liquid phase casting; they were single crystals with a strictly cylindrical shape. The change in the Fermi surface was calculated using Shubnikov de Haas oscillations. In thin wires of Bi doped with Sn the anomalies in thermopower were found out: the peculiarities on the deformation dependences of the thermopower α(ξ) in Bi-0.025at%Sn of the thermopower. The peculiarities in deformation curves of thermopower connected with electron topological transitions (ETT). The interband scattering plays key role in manifestations of above mentioned anomalies in thermopower at ETT which takes place only in doped Bi-wires at low temperatures. It is shown that the high concentrations and higher temperatures leads to a reduction in the thermopower anomalies which corresponds to the exit from the ETT. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova 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 electron topological transitions en_US
dc.subject elastic strain en_US
dc.subject nanowires en_US
dc.title Topological Transitions in the Strain Dependences of Thermopower and Resistance in Nanowires Based on Bi –Sn en_US
dc.type Article en_US


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