149 citations · 256 across the 12 of their papers we have counts for
12 papers
Polarization-induced Weyl phonons in nonsymmorphic crystals
Sahal Kaushik
In this work, it is shown that in certain nonsymmorphic space groups, electric polarization due to an external electric field or ferroelectric order produces Weyl phonons.
Atomically Sharp Internal Interface in a Chiral Weyl Semimetal Nanowire
Nitish Mathur, Fang Yuan, Guangming Cheng +7
Internal interfaces in Weyl semimetals (WSMs) are predicted to host distinct topological features that are different from the commonly studied external interfaces (crystal-to-vacuu…
Transport signatures of Fermi arcs at twin boundaries in Weyl materials
Sahal Kaushik, Iñigo Robredo, Nitish Mathur +4
One of the most striking signatures of Weyl fermions is their surface Fermi arcs. Less known is that Fermi arcs can also be localized at internal twin boundaries where two Weyl mat…
Magnetic and Optical Response of Chiral Fermions
Sahal Kaushik
Dirac and Weyl materials possess chiral fermions, which are characterized by nontrivial topology and large Berry curvature. Chiral fermions have nontrivial interactions with magnet…
Magnetic Photocurrents in Multifold Weyl Fermions
Sahal Kaushik, Jennifer Cano
We examine the magneto-optical response of chiral multifold fermions. Specifically, we show that they are ideal candidates for observing the Helical Magnetic Effect (HME) previousl…
Tunable chiral symmetry breaking in symmetric Weyl materials
Sahal Kaushik, Evan John Philip, Jennifer Cano
Asymmetric Weyl semimetals, which possess an inherently chiral structure, have different energies and dispersion relations for left- and right-handed fermions. They exhibit certain…
Chiral kinetic theory of anomalous transport induced by torsion
Lan-Lan Gao, Sahal Kaushik, Dmitri E. Kharzeev +1
In Weyl semimetals subjected to torsion, there are two different kinds of chirality: i) the (coordinate-space) shape of the twisted crystal is chiral, and ii) the momentum space co…
Transverse Chiral Magnetic Photocurrent Induced by Linearly Polarized Light in Mirror-Symmetric Weyl Semimetals
Sahal Kaushik, Dmitri E. Kharzeev, Evan John Philip
A new class of photocurrents is predicted to occur in both type-I and type-II Weyl semimetals. Unlike the previously studied photocurrents in chiral materials, the proposed current…
Chiral terahertz wave emission from the Weyl semimetal TaAs
Y. Gao, Y. Qin, Sahal Kaushik +9
As a fascinating topological phase of matter, Weyl semimetals host chiral fermions with distinct chiralities and spin textures. Optical excitations involving those chiral fermions…
Chiral Magnetic Photocurrent in Dirac and Weyl Materials
Sahal Kaushik, Dmitri E. Kharzeev, Evan John Philip
Circularly polarized light (CPL) can induce an asymmetry between the number of left- and right-handed chiral quasiparticles in Dirac and Weyl semimetals. We show that if the photor…
Quantum Oscillations in the Chiral Magnetic Conductivity
Sahal Kaushik, Dmitri E. Kharzeev
In strong magnetic field the longitudinal magnetoconductivity in 3D chiral materials is shown to exhibit a new type of quantum oscillations arising from the chiral magnetic effect…
On the global visibility of a singularity in spherically symmetric gravitational collapse
Sanjay Jhingan, Sahal Kaushik
We revisit the gravitational collapse of spherically symmetric Lemaître - Tolman - Bondi (LTB) dust models. A sufficient condition for global visibility of singularity is given. Th…