期刊
PHYSICAL REVIEW LETTERS
卷 123, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.207204
关键词
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资金
- DFG [SFB 1143, 247310070]
- Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter-ct.qmat [EXC 2147, 39085490]
- IMPRS on Chemistry and Physics of Quantum Materials
- ARC [FT180100211]
Inhomogeneous strain applied to lattice systems can induce artificial gauge fields for particles moving on this lattice. Here we demonstrate how to engineer a novel state of matter, namely an antiferromagnet with a Landau-level excitation spectrum of magnons. We consider a honeycomb-lattice Heisenberg model and show that triaxial strain leads to equally spaced pseudo-Landau levels at the upper end of the magnon spectrum, with degeneracies characteristic of emergent supersymmetry. We also present a particular strain protocol which induces perfectly quantized magnon Landau levels over the whole bandwidth. We discuss experimental realizations and generalizations.
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