Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains

Details Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains

2002-03-15

arxiv.org/abs/cond-mat/0203326v1

Phys. Rev. B 66, 014429 (2002)

Physics

Condensed Matter

Disordered Systems and Neural Networks

14 pages, 7 eps figures

Scientific paper

10.1103/PhysRevB.66.014429

We study the thermodynamics of one-dimensional quantum spin-1/2 Heisenberg ferromagnetic system with random antiferromagnetic impurity bonds. In the dilute impurity limit, we generalize the modified spin-wave theory for random spin chains, where local chemical potentials for spin-waves in ferromagnetic spin segments are introduced to ensure zero magnetization at finite temperature. This approach successfully describes the crossover from behavior of pure one-dimensional ferromagnet at high temperatures to a distinct Curie behavior due to randomness at low temperatures. We discuss the effects of impurity bond strength and concentration on the crossover and low temperature behavior.

Affiliated with

Also associated with

No associations

Rating

Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified spin-wave study of random antiferromagnetic-ferromagnetic spin chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-644027