Diffusive transport in spin-1 chains at high temperatures

被引：34

作者：

Karadamoglou, J ^{[1
]}

Zotos, X

机构：

[1] Ecole Polytech Fed Lausanne, Inst Romand Rech Numer Phys Mat, CH-1015 Lausanne, Switzerland

[2] Univ Crete, Dept Phys, Iraklion 71003, Crete, Greece

[3] Fdn Res & Technol Hellas, Iraklion 71003, Crete, Greece

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.93.177203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a numerical study on the spin and thermal conductivities of the spin-1 Heisenberg chain in the high temperature limit, in particular, the Drude weight contribution and frequency dependence. We use the exact diagonalization and the recently developed microcanonical Lanczos method; it allows us a finite size scaling analysis by the study of significantly larger lattices. This work, pointing to a diffusive rather than ballistic behavior, is discussed with respect to other recent theoretical and experimental studies.

引用

页码：177203 / 1

页数：4

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