Journal
PHYSICAL REVIEW B
Volume 98, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.98.245102
Keywords
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Funding
- Netherlands Organization for Scientific Research (NWO) [680-47-543]
- NWO-Graduate Program grant
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We prove the existence of higher-order topological insulators with protected chiral hinge modes in quasitwo-dimensional systems made out of coupled layers stacked in an inversion-symmetric manner. In particular, we show that a homogeneous external magnetic field slightly tilted away from the stacking direction drives alternating p- and n-doped honeycomb sheets into a higher-order topological phase, characterized by a nontrivial three-dimensional Z(2 )invariant. We identify graphene, silicene, and phosphorene multilayers as potential material platforms for the experimental detection of this second-order topological insulating phase.
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