Abstract
Phase transitions between the XY, the dimer, and the Haldane phases of the spin-1 bond-alternating XXZ chain are studied numerically. By use of the “level spectroscopy” we overcome the difficulties in treating the Berezinskii-Kosterlitz-Thouless transition which occurs at the XY-dimer and XY-Haldane boundaries. We find that the XY-Haldane boundary lies just on Δ = 0 (pure XY line). The critical properties can be interpreted as the Ashkin-Teller type reflecting the hidden Z 2 × Z 2 symmetry. We make a conjecture on the phase diagram of the present model for arbitrary S.
| Original language | English |
|---|---|
| Pages (from-to) | 4038-4041 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 76 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - May 20 1996 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Phase diagram of S = 1 bond-alternating XXZ chains. / Kitazawa, Atsuhiro; Nomura, Kiyohide; Okamoto, Kiyomi.
In: Physical Review Letters, Vol. 76, No. 21, 20.05.1996, p. 4038-4041.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Phase diagram of S = 1 bond-alternating XXZ chains
AU - Kitazawa, Atsuhiro
AU - Nomura, Kiyohide
AU - Okamoto, Kiyomi
PY - 1996/5/20
Y1 - 1996/5/20
N2 - Phase transitions between the XY, the dimer, and the Haldane phases of the spin-1 bond-alternating XXZ chain are studied numerically. By use of the “level spectroscopy” we overcome the difficulties in treating the Berezinskii-Kosterlitz-Thouless transition which occurs at the XY-dimer and XY-Haldane boundaries. We find that the XY-Haldane boundary lies just on Δ = 0 (pure XY line). The critical properties can be interpreted as the Ashkin-Teller type reflecting the hidden Z 2 × Z 2 symmetry. We make a conjecture on the phase diagram of the present model for arbitrary S.
AB - Phase transitions between the XY, the dimer, and the Haldane phases of the spin-1 bond-alternating XXZ chain are studied numerically. By use of the “level spectroscopy” we overcome the difficulties in treating the Berezinskii-Kosterlitz-Thouless transition which occurs at the XY-dimer and XY-Haldane boundaries. We find that the XY-Haldane boundary lies just on Δ = 0 (pure XY line). The critical properties can be interpreted as the Ashkin-Teller type reflecting the hidden Z 2 × Z 2 symmetry. We make a conjecture on the phase diagram of the present model for arbitrary S.
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U2 - 10.1103/PhysRevLett.76.4038
DO - 10.1103/PhysRevLett.76.4038
M3 - Article
AN - SCOPUS:4043099552
VL - 76
SP - 4038
EP - 4041
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 21
ER -