Spin-1 Blume-Capel model with longitudinal random crystal and transverse magnetic fields: A mean-field approach
CHINESE PHYSICS B, cilt.22, sa.7, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 22 Sayı: 7
- Basım Tarihi: 2013
- Doi Numarası: 10.1088/1674-1056/22/7/077501
- Dergi Adı: CHINESE PHYSICS B
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: random crystal field, transverse field, spin-1, Blume-Capel model
- Erciyes Üniversitesi Adresli: Evet
Özet
The spin-1 Blume-Capel model with transverse Omega and longitudinal external magnetic fields h, in addition to a longitudinal random crystal field D, is studied in the mean-field approximation. It is assumed that the crystal field is either turned on with probability p or turned off with probability 1 - p on the sites of a square lattice. Phase diagrams are then calculated on the reduced temperature crystal field planes for given values of gamma = Omega/J and p at zero h. Thus, the effect of changing gamma and p are illustrated on the phase diagrams in great detail and interesting results are observed.