Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments
One of the goals of pump-probe spectroscopies is to determine how electrons relax after they have been driven out of equilibrium. It is challenging to determine how close electrons are to a thermal state solely by fitting their distribution to a Fermi-Dirac distribution. Here, instead, we propose th...
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| Veröffentlicht in: | Physical review letters 2019-06, Vol.122 (24) |
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| container_title | Physical review letters |
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| creator | Matveev, O. P. Shvaika, A. M. Devereaux, T. P. Freericks, J. K. |
| description | One of the goals of pump-probe spectroscopies is to determine how electrons relax after they have been driven out of equilibrium. It is challenging to determine how close electrons are to a thermal state solely by fitting their distribution to a Fermi-Dirac distribution. Here, instead, we propose that one compare the effective temperatures of both fermions and collective bosonic modes (derived from the fermions) to determine the distance from a thermal state. Measurements of effective fermionic and bosonic temperatures can be achieved directly via photoemission and nonresonant Raman scattering. Their difference quantifies the distance from thermal equilibrium. |
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| ispartof | Physical review letters, 2019-06, Vol.122 (24) |
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| source | American Physical Society Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
| title | Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments |
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