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Zeitschrift für Physik B Condensed Matter
ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)
Abstract Volume 103 Issue 2 (1997) pp 173-176
Transverse transport in coupled strongly correlated electronic chains
S. Capponi, D. Poilblanc
Laboratoire de Physique Quantique and C.N.R.S. (UMR 5626), Université Paul Sabatier, F-31062 Toulouse, France
Abstract. One-particle interchain hopping in a system of coupled Luttinger liquids is investigated by use of exact diagonalizations techniques [1]. We give numerical evidence that inter-chain coherent hopping (defined by a non-vanishing splitting) can be totally suppressed for the Luttinger liquid exponent <alpha> \sim 0.4 or even smaller <alpha> values. The transverse conductivity is shown to exhibit a strong incoherent part even when coherent inter-chain hopping is believed to occur. Implications for the optical experiments in quasi-1D organic or high-Tc superconductors is outlined.
PACS: 74.72.-h, 71.27.+a
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