Negative differential of the heat generation effect in a quantum dot with spin bias
CHI Feng
ZHENG Jun
Abstract：We study the heat generation by spin -polarized current due to the electron -phonon coupling in a single-level quantum-dot , which is connected to an external symmetric spin battery .We find that the heat generation depends sensitively on the configuration of the spin battery′s chemical potentials .There is remarkable negative differential of the heat generation .We also find that the heat generation is insensitive to the system′s temperature , but the curve of spin current versus spin bias becomes smoother with increasing temperature , indi-cating that the phonon-assisted electron tunneling is suppressed by the electron thermal motion .
Keywords：quantum dotheat generationspin bias
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1-5 )