Doped Carrier Formulation of the t-J model: Monte Carlo Study of the Anisotropic Case

• Authors: A. Ferraz , E. Kochetov , M. Maśka , M. Mierzejewski
• Languages of publication: EN

Abstracts

EN

We derive a doped carrier representation of the t-J model Hamiltonian. Within this approach the t-J model is described in terms of holes hopping in a lattice of correlated spins, where holes are the carriers doped into the half-filled Mott insulator. This representation of the t-J Hamiltonian is very convenient for underdoped systems since close to half-filling it allows for a controlled treatment of the crucial constraint of no doubly occupied sites. When neglecting the transverse spin-spin interaction, the effective Hamiltonian can be investigated with classical Monte Carlo simulations. We discuss the results obtained for systems consisting of several hundred lattice sites.

Keywords

EN

74.20.-z; 74.62.Dh

Discipline

• 74.20.-z: Theories and models of superconducting state
• 74.62.Dh: Effects of crystal defects, doping and substitution(for specific crystal defects, see 61.72.-y)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 185-189

Dates

published

2008-07

received

2007-11-06

Contributors

author

A. Ferraz

• International Center of Condensed Matter Physics, Universidade de Brasilia, Caixa Postal 04667, 70910-900 Brasilia, DF, Brazil

author

E. Kochetov

• International Center of Condensed Matter Physics, Universidade de Brasilia, Caixa Postal 04667, 70910-900 Brasilia, DF, Brazil
• Bogolyubov Theoretical Laboratory, Joint Institute for Nuclear Research, 141980 Dubna, Russia

author

M. Maśka

• Institute of Physics, University of Silesia, 40-007 Katowice, Poland

author

M. Mierzejewski

• Institute of Physics, University of Silesia, 40-007 Katowice, Poland

References

• 1. A. Chao, J. Spałek, A.M. Oleś, J. Phys. C 10, L271 (1977)
• 2. A. Ferraz, E. Kochetov, M. Mierzejewski, Phys. Rev. B 73, 064516 (2006);T.C. Ribeiro, X.-G. Wen, Phys. Rev. Lett. 95, 057001 (2005);A. Ferraz, E. Kochetov, B. Uchoa, Phys. Rev. Lett. 98, 069701 (2007)
• 3. M.M. Maśka, K. Czajka, Phys. Rev. B 74, 035109 (2006)
• 4. M.M. Maśka,Ż.Śledź, K. Czajka, M. Mierzejewski, Phys. Rev. Lett. 99, 147006 (2007)

Identifiers

DOI

10.12693/APhysPolA.114.185