Abstract
We discuss the time scales for relaxation of excited electrons due to laser irradiation in transition-metals, ferromagnets like Ni, Co, high T c -superconductors, and semiconductors like diamond and graphite. Ultrafast relaxation faster than ps may occur as a result of strong electron-electron interactions, while magnetoelastic forces controlling magnetic reorientation and domain dynamics, for example, involve relaxation times of the order of 100 ps or more.
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Clearly, SHG and pump probe spectroscopy can be used to study such dynamics, and from ɤ ~ ∆E-1anis, where ∆Eanis the anisotropy energy, one estimates times of the order of 100 ps.
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© 2001 Kluwer Academic / Plenum Publishers, New York
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Bennemann, K.H. (2001). Non-Equilibrium Physics in Solids: Hot-Electron Relaxation. In: Morán-López, J.L. (eds) Physics of Low Dimensional Systems. Springer, Boston, MA. https://doi.org/10.1007/0-306-47111-6_40
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DOI: https://doi.org/10.1007/0-306-47111-6_40
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-0571-3
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