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Metal-Insulator Transition Accompanied with a Charge Ordering in the One-dimensional t-J' Model

Tetsuya Mutou·Naokazu Shibata·Kazuo Ueda
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Abstract

We study the metal-insulator transition accompanied with a charge ordering in the one-dimensional (1D) t-J' model at quarter filling by the density matrix renormalization group method. In this model the nearest-neighbor hopping energy t competes with the next-nearest-neighbor exchange energy J'. We have found that a metal-insulator transition occurs at a finite value of t/J'; (t/J')_C = 0.18 and the transition is of first order. In the insulating phase for small t/J', there is an alternating charge ordering and the system behaves as a 1D quantum Heisenberg antiferromagnet. The metallic side belongs to the universality class of the Tomonaga-Luttinger liquids. The quantum phase transition is an example of melting of the 1D quantum Heisenberg antiferromagnet.

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Tetsuya Mutou, Naokazu Shibata, Kazuo Ueda. 1998-01-21. Metal-Insulator Transition Accompanied with a Charge Ordering in the One-dimensional t-J' Model. https://doi.org/10.1103/physrevb.57.13702

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