Out-of-equilibrium heating of electron liquid: fermionic and bosonic temperatures

Details Out-of-equilibrium heating of electron liquid: fermionic and bosonic temperatures Out-of-equilibrium heating of electron liquid: fermionic and bosonic temperatures

2010-05-26

arxiv.org/abs/1005.4716v2

Phys. Rev. Lett. 105, 187003 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.105.187003

We investigate out-of-the equilibrium properties of the electron liquid in a two-dimensional disordered superconductor subject to the electric bias and temperature gradient. We calculate kinetic coefficients and Nyquist noise, and find that they are characterized by distinct effective temperatures: $T_{\mathrm{e}}$, characterizing single-particle excitations, $T_{\mathrm{Cp}}$, describing the Cooper pairs, and $T_{\mathrm{eh}}$, corresponding to electron-hole or dipole excitations. Tuning the ratio between the electric $j$ and thermal $j_{\mathrm{th}}$ currents and the boundary conditions one can heat different kind of excitations and control their corresponding temperatures. We propose the experimental setting for determining these effective temperatures.

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