Husslein, T. and Morgenstern, Ingo and Newns, D. M. and Pattnaik, P. C. and Singer, J. M. and Matuttis, H. G. (1996) Quantum Monte Carlo evidence for d-wave pairing in the two-dimensional Hubbard model at a van Hove singularity. PHYSICAL REVIEW B, 54 (22). pp. 16179-16182. ISSN 0163-1829
Full text not available from this repository.Abstract
We implement a quantum Monte Carlo calculation for a repulsive Hubbard model with nearest- and next-nearest-neighbor hopping interactions on clusters up to 12 x 12. A parameter region where the Fermi level lies close to the van Hove singularity at the saddle points in the bulk band structure is investigated. A pairing tendency in the d(x2-y2), symmetry channel, but no other channel, is found. Estimates of the effective pairing interaction show that it is close to the value required for a 40 K superconductor. Finite-size scaling compares with the attractive Hubbard model.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FLUCTUATION-INDUCED SUPERCONDUCTIVITY; CUPRATE SUPERCONDUCTORS; STATE PROPERTIES; FERMI-SURFACE; YBA2CU3O7-DELTA; EXCITATIONS; SIMULATION; SYMMETRY; TC |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Professor Morgenstern > Group Ingo Morgenstern |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2023 12:01 |
| Last Modified: | 25 May 2023 12:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51324 |
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