Quantum phase transition of spin nanotube

Sakai, Toru; Okunishi, Koichi*; Otsuka, Yuichi*; Okamoto, Kiyomi*; Sato, Masahiro*; Itoi, Chigaku*

The spin nanotube was theoretically investigated by the numerical exact diagonalization and the density matrix renormalization group method. It was found that the three-leg spin tube exhibits a quantum phase transition between the spin gap and gapless phases, as a lattice distortion occurs. The superconductivity induced by the spin gap is also discussed.

Language	:	English
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Meeting title	:	2nd International Symposium on Anomalous Quantum Materials (ISAQM 2008) and 7th Asia Pacific Workshop
Held date	:	2008/11
Location (city)	:	Tokyo
Location (country)	:	Japan
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Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : BB20082281
JAEA Abstracts No. :
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