The low-temperature specific heat anomaly of the isotropic one-dimensional Heisenberg antiferromagnet (S=1/2) in a magnetic field
- 24 April 1989
- journal article
- letter
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (16), 2759-2763
- https://doi.org/10.1088/0953-8984/1/16/016
Abstract
The specific heat of the isotropic S=1/2 Heisenberg antiferromagnetic chain is proportional to the temperature at low T. The proportionality constant gamma is a function of field. The authors show that the low-field limit is anomalous in the sense that limH to 0limT to 0 gamma =(1+ square root e/ pi )/3 differs from limT to 0limH to 0 gamma =2/3. They also obtain an approximate interpolation formula between these two limits for situations in which H and T tend to zero simultaneously.Keywords
This publication has 11 references indexed in Scilit:
- Critical behavior of the isotropic ferromagnetic Heisenberg chain with arbitrary spinSPhysical Review B, 1987
- Solution of the Kondo problemReviews of Modern Physics, 1983
- Exact solution of the isotropic Heisenberg chain with arbitrary spins: Thermodynamics of the modelNuclear Physics B, 1983
- Exact results in the theory of magnetic alloysAdvances in Physics, 1983
- Low-Temperature Specific Heat of Spin-1/2 Anisotropic Heisenberg RingProgress of Theoretical Physics, 1973
- Low-Temperature Thermodynamics of theHeisenberg-Ising RingPhysical Review A, 1972
- One-Dimensional Heisenberg Model at Finite TemperatureProgress of Theoretical Physics, 1971
- Thermodynamics of the Heisenberg-Ising Ring forPhysical Review Letters, 1971
- Fermi-Liquid Theory of Linear Antiferromagnetic ChainsProgress of Theoretical Physics, 1969
- Magnetization Curve at Zero Temperature for the Antiferromagnetic Heisenberg Linear ChainPhysical Review B, 1964