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Quantum Criticality of Topological Phase Transitions in 3D Interacting Electronic Systems
Bohm-Jung Yang, Eun-Gook Moon, Hiroki Isobe +1
Topological phase transitions in condensed matters accompany emerging singularities of the electronic wave function, often manifested by gap-closing points in the momentum space. I…
Classification of stable three-dimensional Dirac semimetals with nontrivial topology
Bohm-Jung Yang, Naoto Nagaosa
A three-dimensional (3D) Dirac semimetal is the 3D analog of graphene whose bulk band shows a linear dispersion relation in the 3D momentum space. Since each Dirac point with four-…
Emergent topological phenomena in thin films of pyrochlore iridates
Bohm-Jung Yang, Naoto Nagaosa
Two quintessential ingredients governing the topological invariant of a system are the dimensionality and the symmetry of the system. Due to the recent development of thin film and…
Dirac Cone Metric and the Origin of the Spin Connections in Monolayer Graphene
Bo Yang
We show that the modulation of the hopping amplitudes in the honeycomb lattice of the monolayer graphene uniquely defines a metric which corresponds to the shape of the Dirac cone.…