Year: 2024
Type: article
Abstract: We study hydrodynamic thermal transport in high-mobility two-dimensional electron systems placed in an in-plane magnetic field and identify a new mechanism of thermal magnetotransport. This mechanism is caused by drag between the electron populations with opposite spin polarization, which arises in the presence of a hydrodynamic flow of heat. In high mobility systems, spin drag results in strong thermal magnetoresistance, which becomes of the order of 100% at relatively small spin polarization of the electron liquid. We express the thermal magnetoresistance in terms of intrinsic dissipative coefficients of electron fluid and show that it is primarily determined by the spin diffusion constant.
Source: Physical Review Letters
Authors: Alex Levchenko, A. V. Andreev
Institutions: University of Wisconsin–Madison, University of Washington
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, Wisconsin Alumni Research Foundation, University of Wisconsin-Madison, University of Washington, Office of the Vice Chancellor for Research and Graduate Education, University of Wisconsin-Madison, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research, Division of Graduate Education
OpenAlex ID: W4405319692