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Symmetry-based indicators for topological Bogoliubov-de Gennes Hamiltonians
Max Geier, Piet W. Brouwer, Luka Trifunovic
We develop a systematic approach for constructing symmetry-based indicators of a topological classification for superconducting systems. The topological invariants constructed in t…
Geometric orbital magnetization in adiabatic processes
Luka Trifunovic, Seishiro Ono, Haruki Watanabe
We consider periodic adiabatic processes of gapped many-body spinless electrons. We find an additional contribution to the orbital magnetization due to the adiabatic time evolution…
Valley isospin of interface states in a graphene junction in the quantum Hall regime
Luka Trifunovic, Piet W. Brouwer
In the presence of crossed electric and magnetic fields, a graphene ribbon has chiral states running along sample edges and along boundaries between -doped and -doped regions…
Difficulties in operator-based formulation of the bulk quadrupole moment
Seishiro Ono, Luka Trifunovic, Haruki Watanabe
Electric multipole moments are the most fundamental properties of insulating materials. However, the general formulation of bulk multipoles has been a long standing problem. The so…