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cond-mat.str-el2014
Impurity-induced quantum phase transition in finite Heisenberg spin chains: Criteria for existence and stability
Gang Chen, Yunxuan Li, Zheyong Fan +1
A quantum phase transition may occur in a system at zero temperature when a controlling parameter is tuned towards a critical point. An important question is whether such a critica…
cond-mat.str-el2014★ 1 cited
Spin susceptibility anomaly in cluster Mott insulators on a partially-filled anisotropic Kagome lattice: applications to LiZn2Mo3O8
Gang Chen, Hae-Young Kee, Yong Baek Kim
Motivated by recent experiments on the quantum-spin-liquid candidate material LiZn2Mo3O8, we study a single-band extended Hubbard model on an anisotropic Kagome lattice with the 1/…
cond-mat.str-el2014★ 27 cited
Fractionalized charge excitations in a spin liquid on partially-filled pyrochlore lattice
Gang Chen, Hae-Young Kee, Yong Baek Kim
We study the Mott transition from a metal to cluster Mott insulators in the 1/4- and 1/8-filled pyrochlore lattice systems. It is shown that such Mott transitions can arise due to…