566 citations · 4.5k across the 54 of their papers we have counts for
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Topological Impurity Bands
Arnab Seth, Itamar Kimchi
The effects of disorder on topological phases of matter are typically either preservation of topology or its destruction. For example, the quantum Hall effect's quantization and ch…
Chirality reversal at finite magnetic impurity strength and local signatures of a topological phase transition
Ruiqi Xu, Arnab Seth, Itamar Kimchi
We study the honeycomb lattice with a single magnetic impurity modeled by adding imaginary next-nearest-neighbor hopping ih on a single hexagon. This Haldane defect gives a topolog…
Minimal models for topological Weyl semimetals
Timothy M. McCormick, Itamar Kimchi, Nandini Trivedi
Topological Weyl semimetals (TWS) can be classified as type-I TWS, in which the density of states vanishes at the Weyl nodes, and type-II TWS where an electron and a hole pocket me…
Transport evidence for Fermi-arc mediated chirality transfer in the Dirac semimetal CdAs
Philip J. W. Moll, Nityan L. Nair, Tony Helm +4
Dirac semi-metals show a linear electronic dispersion in three dimension described by two copies of the Weyl equation, a theoretical description of massless relativistic fermions.…
Landau Quantization and Quasiparticle Interference in the Three-Dimensional Dirac Semimetal Cd3As2
Sangjun Jeon, Brian B. Zhou, Andras Gyenis +7
Condensed matter systems provide a rich setting to realize Dirac and Majorana fermionic excitations and the possibility to manipulate them in materials for potential applications.…
Quantum Oscillations from Surface Fermi-Arcs in Weyl and Dirac Semi-Metals
Andrew C. Potter, Itamar Kimchi, Ashvin Vishwanath
The surface states of Weyl semi-metals (SM's) consist of disjointed Fermi-arcs. This unusual surface-Fermiology provides a fingerprint of the topological features of the bulk Weyl-…