Dia- and paramagnetism and total susceptibility of GaAs quantum dots with Gaussian confinement

BOYACIOĞLU, BAHADIR; Chatterjee, Ashok

doi:10.1016/j.physe.2012.05.001

Dia- and paramagnetism and total susceptibility of GaAs quantum dots with Gaussian confinement

BOYACIOĞLU B., Chatterjee A.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.44, sa.9, ss.1826-1831, 2012 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 44 Sayı: 9
Basım Tarihi: 2012
Doi Numarası: 10.1016/j.physe.2012.05.001
Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1826-1831
Ankara Üniversitesi Adresli: Evet

Özet

The total magnetization and susceptibility arising from dia- and paramagnetic effects in a Gaussian quantum dot are calculated and their dependence on temperature (T) and magnetic field (B) are studied. The effect of spin on the magnetic susceptibility is also investigated. It is shown that at low temperature and low magnetic field the system in general shows paramagnetism and at high temperature and high magnetic field the diamagnetic state is found to be a preferred state. The paramagnetic-diamagnetic phase diagram is shown in the B-T plane. (C) 2012 Elsevier B.V. All rights reserved.