Abstract
We have performed an eight-band k center dot p model calculation on the current-voltage (I-V) curves associated with interband magnetotransport in a double-barrier broken-gap heterostructure using the Burt-Foreman multiband envelope function theory and the scattering matrix approach. In a sample with very thin barriers, the broadening Gamma(0) of a virtual bound state with energy E-0 can be very large. Depending on the relative values of Gamma(0) and parallel to E-0-E-F parallel to, where E-F is the Fermi energy, the behavior of the I-V curve can be either of Ohmic type or of resonant-tunneling type, and can be tuned from one to the other by changing the applied magnetic-field strength.
Original language | English |
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Journal | Physical Review B (Condensed Matter and Materials Physics) |
Volume | 75 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2007 |
Subject classification (UKÄ)
- Condensed Matter Physics