Journal
PHYSICAL REVIEW B
Volume 90, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.90.035150
Keywords
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Funding
- National Program for Basic Research of MOST (973 grant)
- NSFC [11374354, 11174360, 11174115, 10974234, 11325417]
- PCSIRT [IRT1251]
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We unveil nontrivial topological properties of zero-temperature magnetization plateau states in periodically modulated quantum spin chains under a uniform magnetic field. As positions of plateaus are uniquely determined by the modulation period of exchange couplings, we find that the topologically nontrivial plateau state can be characterized by a nonzero integer Chern number and has nontrivial edge excitations. Our study clarifies the topological origin of the well-known phenomena of quantized magnetization plateaus in one-dimensional quantum spin systems and relates the plateau state to the correlated topological insulator.
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