Magnetic-field effect on the diamagnetic susceptibility of hydrogenic impurities in quantum well-wires
PHYSICA B-CONDENSED MATTER, cilt.404, sa.21, ss.3850-3854, 2009 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 404 Sayı: 21
- Basım Tarihi: 2009
- Doi Numarası: 10.1016/j.physb.2009.07.103
- Dergi Adı: PHYSICA B-CONDENSED MATTER
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.3850-3854
- Anahtar Kelimeler: Quantum well-wire, Impurity, Magnetic field, Diamagnetic susceptibility, PHOTOIONIZATION CROSS-SECTION, BINDING-ENERGY, DONOR IMPURITY, SHALLOW DONOR, OPTICAL-PROPERTIES, ELECTRIC-FIELD, STATES, TRANSITION
- Sivas Cumhuriyet Üniversitesi Adresli: Evet
Özet
We have studied the magnetic field effects on the diamagnetic susceptibility and binding energy of a hydrogenic impurity in a quantum well-wire by taking into account spatially dependent screening. Using the effective-mass approximation within a variational scheme, binding energy and diamagnetic susceptibility of donor are obtained as a function of the magnetic field, length of the square quantum well-wire for different impurity positions. It is shown that the magnetic field effects on diamagnetic susceptibility can be more important for donors in quantum well-wires over a large range of wire dimensions. (C) 2009 Elsevier B.V. All rights reserved.