Izvorni znanstveni članak
Influence of crossed electric and quantizing magnetic fields on the effective electron mass in semiconductor superlattices
Kamakhya Prasad Ghatak
; Department of Electronic Science, University of Calcutta, University College of Science and Technology, 92, Acharya Prafulla Chandra Road, Calcutta 700009, India
Shambhu N. Banik
; Department of Physics, Dandirhat Nagendra Kumar Uchcha Siksha Niketan, P. O. Dandirhat, Dt. North 24 Parganas, West Bengal, India
Sažetak
An attempt is made to study the effective electron mass at the Fermi level in semiconductor superlattices under cross-field configuration and to compare it with that of the constituent materials, taking GaAs/AlAs superlattice as an example. It is found that the effective electron masses along both directions depend also on the magnetic quantum number. The characteristic feature of the cross-field is to introduce index-dependent oscillatory mass anisotropy in the constituent materials. The numerical values of the mass in superlattices are greater than of the forming compounds. The corresponding well-known results in the absence of electric field have also been obtained from our generalized analysis under certain limiting conditions.
Ključne riječi
Hrčak ID:
299439
URI
Datum izdavanja:
1.3.1995.
Posjeta: 173 *