Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/104451
Title: Spin-dependent beating patterns in thermoelectric properties : filtering the carriers of the heat flux in a Kondo adatom system
Authors: Seridonio, A. C.
Siqueira, E. C.
Franco, R.
Silva-Valencia, J.
Shelykh, I. A.
Figueira, M. S.
Keywords: DRNTU::Science::Physics::Electricity and magnetism
Issue Date: 2014
Source: Seridonio, A. C., Siqueira, E. C., Franco, R., Silva-Valencia, J., Shelykh, I. A., & Figueira, M. S. (2014). Spin-dependent beating patterns in thermoelectric properties : filtering the carriers of the heat flux in a Kondo adatom system. Physical review B, 90(17), 174305-.
Series/Report no.: Physical review B
Abstract: We theoretically investigate the thermoelectric properties of a spin-polarized two-dimensional electron gas hosting a Kondo adatom hybridized with a STM tip. Such a setup is treated within the single-impurity Anderson model in combination with the atomic approach for the Green's functions. Due to the spin dependence of the Fermi wave numbers, the electrical and thermal conductances together with thermopower and Lorenz number reveal beating patterns as a function of the STM tip position in the Kondo regime. In particular, by tuning the lateral displacement of the tip with respect to the adatom vicinity, the temperature, and the position of the adatom level, one can change the sign of the Seebeck coefficient through charge and spin. This opens a possibility of the microscopic control of the heat flux analogously to that established for the electrical current.
URI: https://hdl.handle.net/10356/104451
http://hdl.handle.net/10220/24694
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.90.174305
Rights: © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.90.174305]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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