Magnetic field dependence of valley splitting in realistic Si∕SiGe quantum wells
Magnetic field dependence of valley splitting in realistic Si∕SiGe quantum wells
The authors investigate the magnetic field dependence of the energy splitting between low-lying valley states for electrons in a Si∕SiGe quantum well tilted with respect to the crystallographic axis. The presence of atomic steps at the quantum well interface may explain the unexpected, strong suppression of the valley splitting observed …