Boundary susceptibility in the spin-1/2 chain: Curie like behavior without magnetic impurities
Journal article, 2004

We investigate the low-temperature thermodynamics of the spin-1/2 Heisenberg chain with open ends. On the basis of boundary conformal field theory arguments and numerical density matrix renormalization group calculations, it is established that in the isotropic case the impurity susceptibility exhibits a Curie-like divergent behavior as the temperature decreases, even in the absence of magnetic impurities. A similar singular temperature dependence is also found in the boundary contributions of the specific heat coefficient. In the anisotropic case, for 1/2


Satoshi Fujimoto

Kyoto University

Sebastian Eggert

Chalmers, Department of Theoretical Physics and Mechanics, Solid State Theory

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 92 3 037206-

Subject Categories

Physical Sciences



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