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arXiv · 0909.1622

Magnetic Flux Tuning of Spin Chirality in Mott Insulators with Ring Exchanges

Yi-Fei Wang·Chang-De Gong
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Abstract

A manifestation of the many-body Aharonov-Bohm effect in the magnetic-flux-tuned Mott insulators with three-spin and four-spin ring exchanges, presents as an effective tool to manipulate the ground-state spin chirality, such as, tune the magnitude continuously, switch an abrupt jump, or even reverse its sign. Such a mechanism is demonstrated explicitly in both quasi-one-dimensional ladders and two-dimensional lattices with triangles as elementary plaquettes.

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Yi-Fei Wang, Chang-De Gong. 2009-09-09. Magnetic Flux Tuning of Spin Chirality in Mott Insulators with Ring Exchanges. https://doi.org/10.1103/physrevb.82.132406

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