Quantum phase transition of the S=1/2 three-leg spin tube

Sakai, Toru; Nakano, Hiroki*; Okunishi, Koichi*

The S=1/2 three-leg spin tube is investigated using the large-scale numerical diagonalization up to 42 spins and the level spectroscopy method. The critical ratio of the rung and leg exchange interactions where a quantum phase transition occurs between the gapless and gapped phases is estimated precisely.

Language	:	Japanese
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Meeting title	:	日本物理学会2014年秋季大会(物性)
Held date	:	2014/09
Location (city)	:	春日井
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : BB20140475
JAEA Abstracts No. :
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