Density Matrix Renormalization Group and Numerical Diagonalization Study on the Quantum Spin Nanotube in Magnetic Field | Zendy

Tôru Sakai | Zendy; Masahiro Sato | Zendy; Kouichi Okunishi | Zendy; Kiyomi Okamoto | Zendy; Chigak Itoi | Zendy

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Density Matrix Renormalization Group and Numerical Diagonalization Study on the Quantum Spin Nanotube in Magnetic Field

Author(s) -

Tôru Sakai,

Masahiro Sato,

Kouichi Okunishi,

Kiyomi Okamoto,

Chigak Itoi

Publication year - 2011

Publication title -

progress in nuclear science and technology

Language(s) - English

Resource type - Journals

ISSN - 2185-4823

DOI - 10.15669/pnst.2.30

Subject(s) - density matrix renormalization group , physics , nanotube , condensed matter physics , density matrix , field (mathematics) , matrix (chemical analysis) , quantum mechanics , spin (aerodynamics) , quantum , mathematics , materials science , carbon nanotube , nanotechnology , pure mathematics , thermodynamics , composite material

The magnetization process of the S=1/2 three-leg spin tube with an asymmetric exchange interaction in each triangle unit is investigated by the numerical exact diagonalization and the density matrix renormalization group calculation. It is found that the 1/3 magnetization plateau appears due to two different mechanisms depending on the asymmetry. The phase diagrams of the 1/3 plateau is presented. In addition some cusp-like anomalies are found in the magnetization curve.

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