Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:cond-mat/9504064

Random $s=1/2$ $XY$ chains and the theory of quasi-one-dimensional ferroelectrics with hydrogen bonds

Oleg Derzhko, Taras Krokhmalskii

Published Apr 17, 1995• 0 citations
arXivHTMLPDF

Abstract

The paper presents a new numerical approach for studying the thermodynamical and dynamical properties of finite spin-$\frac{1}{2}$ $XY$ chains. Special attention is given to examining the influence of disorder on the average transverse dynamical susceptibility of Ising chain in random transverse field.

DOI
10.48550/arxiv.cond-mat/9504064

Related papers

Random S = ½ XY chains and the theory of quasi-one-dimensional ferroelectrics with hydrogen bonds

Oleg Derzhko, Taras Krokhmalskii

The paper presents a new numerical approach for studying the thermodynamical and dynamical properties of finite spin-1/2 XY chains. Special attention is given to examining the influence of disorder on the average transverse dynamical susceptibility of Ising chain in random transverse field.

Ferroelectrics•Feb 1, 1997•4 citations

Statistical properties of random spin-1/2 XY chains

Oleg Derzhko, Taras Krokhmalskii

A numerical approach to the study of equilibrium statistical properties of spin-1/2 XY chains is suggested. The approach is illustrated by the examining of influence of disorder on transverse dynamical susceptibility of spin-1/2 Ising chain in random transverse field.

arXiv:cond-mat/9501038•Jan 10, 1995•0 citations

Dynamic susceptibility of spin-1/2 Ising chain in transverse field

Oleg Derzhko, Taras Krokhmalskii

Dynamic susceptibility of the one-dimensional spin-1/2 transverse Ising model is obtained by using the numerical approach suggested earlier [Ferroelectrics 153, 55 (1996)]. The dependence of the susceptibility frequency shapes on the value of the transverse field at various temperatures is discussed. The way in which the frequency shape rebuilds as the transverse field increases is illustrated.

Low Temperature Physics•Jul 1, 1997•0 citations

Numerical Approach for the Study of the Spin-1/2 XY Chains Dynamic Properties

Oleg Derzhko, Taras Krokhmalskii

The paper presents a numerical approach for the calculation of thermodynamics and spin correlations for spin-½ XY chains. To illustrate the approach we performed exact finite-chain calculations of all time-dependent two-spin correlation functions for the spin-½ Ising chain in the transverse field. The computed correlation functions permit to evaluate the frequency-dependent susceptibilities and structure factors for this model. The obtained results are discussed in detail. They may have an application for the interpretation of dynamic experiments on quasi-one-dimensional crystals that can be treated within the frames of the spin-½ transverse Ising model.

physica status solidi (b)•Jul 1, 1998•29 citations

Thermodynamics and spin correlations for an Ising chain in a random transverse field

Oleg Derzhko, Taras Krokhmalskii, Taras Verkholyak

Using the exact finite-chain calculation approach we examined the specific heat and equal-time transverse spin correlations for an Ising chain in a random transverse field.

Philosophical Magazine B•Nov 1, 1997•1 citation

Dynamical behavior of the four-body transverse Ising model with random bonds and fields

B. Boechat, Claudette E. Cordeiro, O. F. de Alcantara Bonfim +2 more

We study the effect of random bonds and fields on the dynamical behavior of the one-dimensional transverse Ising model with four-spin interactions. We consider finite chains of increasing size to determine the time-dependent correlation function and the longitudinal relaxation function of the infinite chain. In this fully disordered system we observe a crossover from a collective modetype of dynamics to that of a central regime.

Brazilian Journal of Physics•Dec 1, 2000•8 citations
Random s=1/2s=1/2s=1/2 XYXYXY chains and the theory of quasi-one-dimensional ferroelectrics with hydrogen bonds
The paper presents a new numerical approach for studying the thermodynamical and dynamical properties of finite spin-12\frac{1}{2}21​ XYXYXY chains. Special attention is given to examining the influence of disorder on the average transverse dynamical susceptibility of Ising chain in random transverse field.
The paper presents a numerical approach for the calculation of thermodynamics and spin correlations for spin-½ XY chains. To illustrate the approach we performed exact finite-chain calculations of all time-dependent two-spin correlation functions for the spin-½ Ising chain in the transverse field. The computed correlation functions permit to evaluate the frequency-dependent susceptibilities and structure factors for this model. The obtained results are discussed in detail. They may have an application for the interpretation of dynamic experiments on quasi-one-dimensional crystals that can be treated within the frames of the spin-½ transverse Ising model.