Photon drag and other emfs induced in tellurium by a TEA CO2 laser
- 15 April 1974
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 24 (8), 377-379
- https://doi.org/10.1063/1.1655224
Abstract
The longitudinal photon drag signal has been isolated from other interfering emfs generated in high‐purity good‐quality tellurium single crystals illuminated by 10.6‐μ radiation from a pulsed TEA CO2 laser. The observed value of 10 mV/MW cm−2 at room temperature for the photon drag signal with E∥c and its temperature dependence down to 125 °K agree with the generally accepted theoretical expression. At room temperature the heavy hole momentum relaxation time has been calcualted to be 1.7 × 10−13 sec. Signals corresponding to a third‐rank tensorial effect have been occasionally measured at low temperatures, particularly when defects or dislocations have been introduced into the samples.Keywords
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