Haldane, large- and intermediate- states in an =2 quantum spin chain with on-site and anisotropies

Tonegawa, Takashi*; Okamoto, Kiyomi*; Nakano, Hiroki*; Sakai, Toru; Nomura, Kiyohide*; Kaburagi, Makoto*

Using mainly numerical method, we investigate the ground-state phase diagram of the =2 quantum spin chain with on-site and anisotropies. As a result we found a new phase between the well-known Haldane phase and the large- phase. The precise phase diagram is presented by the level spectroscopy method.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	80
Number	:	4
Pages	:	p.043001_1 - 043001_4
Publication Year/Month	:	2011/04
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Paper URL	:	https://doi.org/10.1143/JPSJ.80.043001
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Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : AA20100740
JAEA Abstracts No. : 39000842
Paper Submission No. : 9090

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