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Electron–spin-fluctuation interaction in the 2D one-band Hubbard model

✍ Scribed by Z.B. Huang; Y. Gao; W. Hanke; E. Arrigoni


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
145 KB
Volume
460-462
Category
Article
ISSN
0921-4534

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Spin waves in the 2D Hubbard model beyon
✍ P.J.H. Denteneer; J.M.J. van Leeuwen 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 157 KB

The spin-wave velocity c for the repulsive Hubbard model on a square lattice at half-filling is calculated as the square root of spin stiffness over perpendicular susceptibility using the variational Monte Carlo method with Gutzwiller wave function. For 3 < U/t < 12, c increases by 34--15% compared