Magneto-thermoelectricproperties of bismuth quantum wires at elastic stretch
D.Gitsu1, T. Huber3, L. Konopko1, A. Nikolaeva1,2
Bi wires in a glasscover bear elastic deformations (stretch) up to 2.5-3% relative elongation.
Anisotropicdeformation was used for realization of electron topologic transitions withpurpose to reveal the influence of the Fermi surface topology on the magneto-thermoelectric properties of Bi quantum wires in confinement conditions.
Thermopower andmagnetothermopower depend non-monotonously on stretch and in the temperaturerange 100-50K change sing more than once. Power- factor, its dependence ondiameter, stretch, magnetic field and temperature was calculated. The obtainedresults are discussed from the viewpoint of quantum size effects, inter- bandscattering and actuality of L and T- extremes in the process of stretch andmagnetic quantization.
This work is supported by Civilian Research andDevelopment Foundation for the Independent States of the Former Soviet Union(CRDF) # MP2 – 3019.