274 citations · 4.8k across the 109 of their papers we have counts for
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Tuning the nontrivial topological properties of the Weyl semimetal CeAlSi
M. M. Piva, J. C. Souza, V. Brousseau-Couture +6
In the ferromagnetic Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. We use external pressure as an effective tuning parameter and relate three…
Octupolar order and Ising quantum criticality tuned by strain and dimensionality: Application to -orbital Mott insulators
Sreekar Voleti, Arijit Haldar, Arun Paramekanti
Recent experiments have discovered multipolar orders in a variety of -orbital Mott insulators. Motivated by uncovering the exchange interactions which underlie octupolar order p…
XY magnetism, Kitaev exchange, and long-range frustration in the honeycomb cobaltates
Shreya Das, Sreekar Voleti, Tanusri Saha-Dasgupta +1
The quest for Kitaev quantum spin liquids has led to great interest in honeycomb quantum magnets with strong spin-orbit coupling. It has been recently proposed that even Mott insul…
Resonant optical topological Hall conductivity from skyrmions
Sopheak Sorn, Luyi Yang, Arun Paramekanti
We study the high frequency Hall conductivity in a two-dimensional (2D) model of conduction electrons coupled to a background magnetic skyrmion texture via an effective Hund's coup…
Higher-order topology and corner triplon excitations in two-dimensional quantum spin-dimer models
Arijit Haldar, Geremia Massarelli, Arun Paramekanti
The concept of free fermion topology has been generalized to -dimensional phases that exhibit -dimensional boundary modes, such as zero-dimensional (0D) corner excitation…
Magnetic skyrmion crystal at a topological insulator surface
Stefan Divic, Henry Ling, T. Pereg-Barnea +1
We consider a magnetic skyrmion crystal formed at the surface of a topological insulator. Incorporating the exchange interaction between the helical Dirac surface states and the pe…