Many-body effects on terahertz quantum well detectors

Guo, X. G.; Tan, Z. Y.; Cao, J. C.; Liu, H. C.
May 2009
Applied Physics Letters;5/18/2009, Vol. 94 Issue 20, p201101
Academic Journal
Many-body effects have been investigated in the design of terahertz quantum well photon detectors. A large discrepancy between the theoretical and experimental photoresponse peak positions exist without considering the many-body interactions. The calculated results agree with the experimental data quantitatively with including the exchange-correlation and depolarization effects within the local density approximation. Our numerical results show that it is a must to consider the many-body interactions for designing the quantum well detectors for the terahertz region.


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