Density-matrix renormalization group study of the extended Kitaev-Heisenberg model

We study an extended Kitaev-Heisenberg model including additional anisotropic couplings by using the two-dimensional density-matrix renormalization group method. Calculating the ground-state energy, entanglement entropy, and spin-spin correlation functions, we make a phase diagram of the extended Ki...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2015-02, Vol.91 (5), Article 054401
Hauptverfasser:	Shinjo, Kazuya, Sota, Shigetoshi, Tohyama, Takami
Format:	Artikel
Sprache:	eng
Schlagworte:	Antiferromagnetism Condensed matter Couplings Entanglement Entropy Mathematical models Phase boundaries Phase diagrams Phase transformations
Online-Zugang:	Volltext
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