High temperature thermal conductivity of two-leg spin-1/2 ladders
Based on numerical simulations, a study of the high temperature, finite frequency, thermal conductivity kappa(omega) of spin-1/2 ladders is presented. The exact diagonalization and a novel Lanczos technique are employed. The conductivity spectra, analyzed as a function of rung coupling, point to a n...
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| Published in | Physical review letters Vol. 92; no. 6; p. 067202 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
13.02.2004
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| Online Access | Get more information |
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| Summary: | Based on numerical simulations, a study of the high temperature, finite frequency, thermal conductivity kappa(omega) of spin-1/2 ladders is presented. The exact diagonalization and a novel Lanczos technique are employed. The conductivity spectra, analyzed as a function of rung coupling, point to a nondiverging dc limit but to an unconventional low frequency behavior. The results are discussed in perspective with recent experiments indicating a significant magnetic contribution to the energy transport in quasi-one-dimensional compounds. |
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| ISSN: | 0031-9007 |
| DOI: | 10.1103/PhysRevLett.92.067202 |