Floquet-Bloch Oscillations and Intraband Zener Tunneling in an Oblique Spacetime Crystal
Floquet-Bloch Oscillations and Intraband Zener Tunneling in an Oblique Spacetime Crystal
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DOI：
10.1103/physrevlett.127.036401
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发表时间：
2021-07-14
影响因子：
8.6
通讯作者：
Niu, Qian
中科院分区：
文献类型：
--
作者：
Gao, Qiang;Niu, Qian
We study an oblique spacetime crystal realized by a monoatomic crystal in which a sound wave propagates, and analyze its quasienergy band structure starting from a tight-binding Bloch band for the static crystal. We investigate Floquet-Bloch oscillations under an external field, which show different characteristics for different band topologies. We also discover intraband Zener tunneling beyond the adiabatic limit, which effectively converts between different band topologies. Our results indicate the possibility of energy conversion between the sound wave and a dc electric field.
