Abstract
Exact results for the thermodynamic quantities of the one-dimensional classical Heisenberg model with nearest- and next-nearest-neighbor exchange interactions are obtained by means of the numerical transfer matrix method. For a wide range of exchange constants, the system exhibits helical short-range order on which we focus our attention. We find that the Fourier-transformed spin correlation function shows a maximum with asymmetric shape at the characteristic wave-number ±qm (≠0, ±π). The correlation length defined as the inverse of the width at q=qm obeys a simple scaling law and shows a power-law singularity at zero temperature. Results for the heat capacity and the susceptibility are also presented and discussed in connection with the helical short-range order.
Original language | English |
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Pages (from-to) | 391-398 |
Number of pages | 8 |
Journal | Zeitschrift für Physik B Condensed Matter |
Volume | 72 |
Issue number | 3 |
DOIs | |
Publication status | Published - Sep 1 1988 |
ASJC Scopus subject areas
- Condensed Matter Physics