| Title | Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure |
| Publication Type | Journal Article |
| Year of Publication | 1996 |
| Authors | T.A Vaughan, R.J Nicholas, C Langerak, B.N Murdin, C.R Pidgeon, N.J Mason, P.J Walker |
| Journal | Physical Review B |
| Volume | 53 |
| Number | 24 |
| Pagination | 16481-16484 |
| Date Published | Jun 15 |
| ISBN Number | 0163-1829 |
| Abstract | Landau-level lifetimes are determined from saturation cyclotron resonance measurements on an InAs/GaSb double heterojunction using a picosecond far-infrared free-electron laser. Strong nonparabolicity of the conduction band truncates the equidistant Landau-level ladder, and saturation is achieved at all wavelengths. The Landau-level lifetimes show minima at NHBAR omega(c) = HBAR omega(LO), a direct observation of the magnetophonon effect. Observed picosecond lifetimes are due to LO-phonon emission which dominates electron-electron scattering at the magnetophonon resonance condition. |
| DOI | 10.1103/PhysRevB.53.16481 |
| PID | e31403e3b98754a0de01eaff23368f89 |
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