Classical generalization of the Drude formula for the optical conductivity
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- 20 September 2001
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 64 (15), 155106
- https://doi.org/10.1103/physrevb.64.155106
Abstract
A simple classical generalization of the Drude formula is derived based on the impulse response approach and Poisson statistics. The new feature is a parameter c, which is a measure of persistence of velocity. With negative values of c, it is possible to mimic the infrared properties of poor metals that display a minimum in the optical conductivity at zero frequency. The electron current in these cases reverses direction before decaying to zero. Specific examples considered are Hg and its amalgams, liquid Te, and the quasicrystal Discussion is offered on the connection with interband transitions, on the distinction between the electron lifetime and the transport relaxation time, and on other generalizations of the Drude formula.
Keywords
This publication has 23 references indexed in Scilit:
- Transient photoconductivity in GaAs as measured by time-resolved terahertz spectroscopyPhysical Review B, 2000
- Optical conductivity ofEnergy gap and mid-infrared peak in diluted Kondo semiconductorsPhysical Review B, 2000
- Possible non-Fermi-liquid nature of paramagneticUBe13: The optical point of viewPhysical Review B, 1997
- The pseudogap state in high- superconductors: an infrared studyJournal of Physics: Condensed Matter, 1996
- Optical properties of expanded fluid mercuryPhysical Review B, 1978
- The optical properties of liquid metalsPhilosophical Magazine, 1972
- The optical properties of liquid amalgamsPhilosophical Magazine, 1970
- The electrical properties of liquid mercuryPhilosophical Magazine, 1966
- The optical properties of liquid indium, cadmium, bismuth and antimonyPhilosophical Magazine, 1962
- Measurements of the optical constants of mercury and mercury-indium amalgams in the spectral region 4000 to 17 000 cm−1Philosophical Magazine, 1959