The effects of bond randomness are studied for spin chains with excitation gaps in the pure case. Systems with enforced topological structure like the spin-1/2 chain with enforced dimerization and spin-1 chain in the Haldane gapped phase appear very stable against randomness. On the other hand, systems with spontaneously generated topological order like the spin-1/2 chain with spontaneous dimerization are found to be unstable even for weak randomness despite the gap.
|Original language||English (US)|
|Number of pages||3|
|Journal||Journal of Applied Physics|
|Issue number||8 PART 2A|
|State||Published - Apr 15 1996|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)