Volume 56, Number 5, December 2001
|Page(s)||716 - 721|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 December 2003|
Quantum-beat recombination echoes
Hahn-Meitner-Institut Berlin, Abt. SE1 - Kekuléstr. 5,
D-12489 Berlin, Germany
Corresponding author: firstname.lastname@example.org
Accepted: 12 September 2001
A recombination echo phenomenon of weakly coupled electron-hole pairs in disordered semiconductors is suggested. The time-domain calculation of spin-dependent recombination within such pairs indicates that dephasing beat oscillations can take place in a magnetic field and a phase recovery due to a resonant microwave pulse is possible. This effect, which we call the quantum-beat recombination echo, is illustrated for different pulse sequences. Applications for material characterisation and quantum computing are suggested.
PACS: 72.20.Jv – Charge carriers: generation, recombination, lifetime and trapping / 76.60.Lz – Spin echoes / 76.90.+d – Other topics in magnetic resonances and relaxation
© EDP Sciences, 2001
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