Temperature of quasi-two-dimensional electron gases under steady-state terahertz drive
Asmar, N. G. ; Cerne, J. ; Markelz, A. G. ; Gwinn, E. G. ; Sherwin, M. S. ; Campman, K. L. ; Gossard, A. C.
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We use photoluminescence to study the time-average energy distribution of electrons in the presence of strong steady-state drive at terahertz (THz) frequencies, in a modulation-doped 125 A(ring) AlGaAs/GaAs square well that is held at low lattice temperature TL. We find that the energy distribution can be characterized by an effective electron temperature, Te((approximately-greater-than)TL), that agrees well with values estimated from the THz-illuminated, dc conductivity. This agreement indicates that under strong THz drive, LO phonon scattering dominates both energy and momentum relaxation; that the carrier distribution maintains a heated, thermal form; and that phonon drift effects are negligible. © 1996 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |