Zobrazeno 1 - 9
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pro vyhledávání: '"Trumper, Adolfo E."'
Autor:
Trumper, Adolfo E., Gazza, Claudio J.
The effect of antiferromagnetic interchain coupling in alternating spin (1,1/2) chains is studied by mean of spin wave theory and density matrix renormalization group(DMRG). Two limiting cases are investigated, the two-leg ladder and its two dimensio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109179
Autor:
Trumper, Adolfo E., Gazza, Claudio
The effect of antiferromagnetic interchain coupling in alternating spin (1,1/2) chains is studied by mean of a spin wave theory and density matrix renormalization group (DMRG). In particular, two limiting cases are investigated, the two-leg ladder an
Externí odkaz:
http://arxiv.org/abs/cond-mat/0103424
Publikováno v:
Physical Review B 61, 11529 (2000)
We present a finite size spin wave calculation on the Heisenberg antiferromagnet on the triangular lattice focusing in particular on the low-energy part of the excitation spectrum. For s=1/2 the good agreement with the exact diagonalization and quant
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909268
Autor:
Trumper, Adolfo E.
Publikováno v:
Phys. Rev. B60, 2987 (1999)
We study the phase diagram at T=0 of the antiferromagnetic Heisenberg model on the triangular lattice with spatially-anisotropic interactions. For values of the anisotropy very close to J_alpha/J_beta=0.50, conventional spin wave theory predicts that
Externí odkaz:
http://arxiv.org/abs/cond-mat/9812311
Publikováno v:
In Physica B: Physics of Condensed Matter 2004 354(1):252-256
Autor:
Trumper, Adolfo E. *, Gazza, Claudio J.
Publikováno v:
In Physica B: Physics of Condensed Matter 2002 320(1):340-342
Publikováno v:
Canadian Journal of Physics. Nov2001, Vol. 79 Issue 11/12, p1537. 6p.
Publikováno v:
Journal of Applied Physics; 5/1/2000, Vol. 87 Issue 9, p7046, 3p
Publikováno v:
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
We have analyzed the dynamics of a single hole doped in a canted antiferromagnet using the t-J model. Within the self-consistent Born approximation we have found that the hole propagates at two different energy scales along the antiferromagnetic and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::fd1bd71a5605f1eba133407168e94c53