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Oral presentation

Spin nanotubes

Sakai, Toru; Sato, Masahiro*; Okunishi, Koichi*; Okamoto, Kiyomi*; Itoi, Chigaku*; Nakano, Hiroki*

no journal, , 

The S=1/2 spin nanotube is theoretically investigated by the numerical diagonalization and the density matrix renormalization group. We found some new quantum phase transitions with respect to the ratio of the leg and rung exchange interactions. Some interesting quantum phenomena in the carrier doped spin tube will be also discussed.

Oral presentation

Vertical spin valves of graphene/ferromagnetic metal junctions

Entani, Shiro; Naramoto, Hiroshi*; Sakai, Seiji

no journal, , 

Oral presentation

Spin orientation and electronic states at graphene/nickel interface

Matsumoto, Yoshihiro*; Entani, Shiro; Koide, Akihiro*; Otomo, Manabu*; Avramov, P.*; Naramoto, Hiroshi*; Amemiya, Kenta*; Fujikawa, Takashi*; Sakai, Seiji

no journal, , 

no abstracts in English

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