Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain

Details Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain

1993-04-23

arxiv.org/abs/cond-mat/9304040v1

Physics

Condensed Matter

11 pages + 5 figures available upon request from kabu@icluna.kobe-u.ac.jp, TeX, KOBE-CCS-93-01

Scientific paper

10.1143/JPSJ.62.1848

Low-lying excited states of the spin-1 antiferromagnetic Heisenberg chain with an impurity bond are investigated in terms of domain-wall excitations by means of analytical methods as well as a method of numerical diagonalization. It is shown that 1) the impurity bond brings about a massive triplet mode in the Haldane gap, 2) the triplet state comprises three of the four ground states of an open chain, 3) the excited states with the domain wall trapped at the impurity bond, including the massive triplet mode, exhibit a N\'eel-type configuration of the magnetic moment around the impurity bond. On the basis of the present results, we propose a new energy versus magnetic-field diagram.

Affiliated with

Also associated with

No associations

Rating

Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain 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 Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impurity-Bond Effect on the Spin-1 Antiferromagnetic Heisenberg Chain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-181945