New S=1/2 Alternating Chain Compound - High Pressure Form of (VO)_{2}P_{2}O_{7-}

• Authors: M. Azuma , T. Saito , Z. Hiroi , M. Takano , Y. Narumi , K. Kindo
• Languages of publication: EN

Abstracts

EN

The high-pressure phase of (VO)_{2}P_{2}O_{7} comprises a unique kind of spin-1/2 Heisenberg alternating antiferromagnetic chain, in contrast with the ambient pressure phase containing two crystallographically different chains. Magnetic susceptibility and high-field magnetization data showed the presence of a single spin gap of 23 (magnetization) ~27 (susceptibility) K, not double as observed for the ambient pressure phase. This result shows that the two kinds of chains of the ambient pressure phase have single, different spin gaps.

Keywords

EN

75.10.Jm; 75.40.Cx; 75.50.Ee

Discipline

• 75.50.Ee: Antiferromagnetics
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 75.10.Jm: Quantized spin models, including quantum spin frustration

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 1
• Pages: 205-208

Dates

published

2000-01

Contributors

author

M. Azuma

• Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan

author

T. Saito

• Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan

author

Z. Hiroi

• Institute for Solid State Physics, University of Tokyo, Roppongi 7-22-1, Minato-ku, Tokyo 106-8666, Japan

author

M. Takano

• Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan

author

Y. Narumi

• KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan

author

K. Kindo

• KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan

Identifiers

DOI

10.12693/APhysPolA.97.205