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Journal Article

Parametric pumping of the two-dimensional quantum spin liquid


Zvyagin,  A. A.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Zvyagin, A. A. (2017). Parametric pumping of the two-dimensional quantum spin liquid. Physical Review B, 95(6): 064428. doi:10.1103/PhysRevB.95.064428.

Cite as: http://hdl.handle.net/21.11116/0000-0001-2B39-0
With the help of the exact solution of the Kitaev model the parametric pumping of the two-dimensional quantum spin liquid under the action of the ac magnetic field is studied. In the dynamical regime the field produces oscillations of the magnetization with the field's frequency, modulated by the Rabi-like oscillations. In the steady-state regime, the Rabi-like oscillations are damped. The absorption of the ac field by the Kitaev spin model is finite and manifests resonance features. Such a behavior is generic for quantum spin liquids with fermionic excitations, and it is different from the linear spin-wave response of magnetically ordered systems to such a parametric pumping.