Abstract
We investigated non-resonant phonon-assisted tunnelling in an InGaAs/InAlAs triple barrier tunnelling diode in the presence of high magnetic fields up to 40 T in the current direction. We observe quenching of the non-resonant valley current and narrow band GaAs-like and AlAs-like longitudinal optical (LO) phonon peaks related to the phonon bottleneck effect. The peak-to-valley ratio of the device increases significantly up to magnetic fields of 12 T. LO-phonon peaks give information about the electron-LO-phonon coupling strength in the well and the barrier layers.
Original language | English |
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Pages (from-to) | 998-1002 |
Number of pages | 5 |
Journal | Semiconductor Science and Technology |
Volume | 12 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1997 Aug |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry