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Instytut Podstaw Informatyki, Acta Physica Polonica A, 1(113), p. 429-432, 2008

DOI: 10.12693/aphyspola.113.429

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Frustration-driven quantum phase transition in the 1D extended anisotropic Heisenberg model

Journal article published in 2008 by E. Plekhanov, A. Avella ORCID, F. Mancini
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

By using density matrix renormalization group technique we study the 1D extended anisotropic Heisenberg model. We find that starting from the ferromagnetic phase, the system undergoes two quantum phase transitions induced by frustration. By increasing the next-nearest-neighbor interaction, the ground state of the system changes smoothly from a completely polarized state to a next-nearest-neighbor correlated one. On the contrary, letting the in-plane interaction to be greater than the out-of-plane one, the ground state changes abruptly.