One-dimensional band-edge absorption in a doped quantum wire.
نویسندگان
چکیده
Low-temperature photoluminescence-excitation spectra are studied in an n-type modulation-doped T-shaped single quantum wire with a gate to tune electron densities. With a nondegenerate one-dimensional (1D) electron gas, the band-edge absorption exhibits a sharp peak structure induced by the 1D density of states. When the dense 1D electron gas is degenerate at a low temperature, we observe a Fermi-edge absorption onset without many-body modifications.
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ورودعنوان ژورنال:
- Physical review letters
دوره 99 12 شماره
صفحات -
تاریخ انتشار 2007