Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.076804
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Funding
- MEXT of Japan [23102714, 23540406]
- Global COE Program The Next Generation of Physics, Spun from Universality and Emergence
- Grants-in-Aid for Scientific Research [23540406, 23102714] Funding Source: KAKEN
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The relation between bulk topological invariants and experimentally observable physical quantities is a fundamental property of topological insulators and superconductors. In the case of chiral symmetric systems in odd spatial dimensions such as time-reversal invariant topological superconductors and topological insulators with sublattice symmetry, this relation has not been well understood. We clarify that the winding number which characterizes the bulk Z nontriviality of these systems can appear in electromagnetic and thermal responses in a certain class of heterostructure systems. It is also found that the Z nontriviality can be detected in the bulk chiral polarization, which is induced by magnetoelectric effects. DOI: 10.1103/PhysRevLett.110.076804
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