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Ground states of the two-dimensional Falicov–Kimball model with correlated hopping

✍ Scribed by Hana Čenčariková; Pavol Farkašovský


Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
290 KB
Volume
359-361
Category
Article
ISSN
0921-4526

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Ground state properties of the two-dimen
✍ Nobuo Furukawa; Masatoshi Imada 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 171 KB

Two dimensional spin-fermion model is studied by using the perturbation method and the spin wave approximation. Non-crossing diagrams are calculated using the dominant pole approximation. As a result, we see that the renormalization parameter z is reduced as z ¢x L -1;4, where L is the linear dimens