362 citations · 1.3k across the 32 of their papers we have counts for
25 papers · 1 filter
Topological Optical Pseudospin Injection Beyond Weyl Semimetals
Suvendu Ghosh, Chuanchang Zeng, A. Taraphder +2
Photoinduced effects are now reckoned to be important tools to reveal a rich gamut of entrancing physics in topological materials, which are normally inaccessible to conventional p…
Signature of nodal topology in nonlinear quantum transport across junctions in Weyl and multi-Weyl semimetals
Suvendu Ghosh, Snehasish Nandy, Jian-Xin Zhu +1
We investigate quantum transport through a rectangular potential barrier in Weyl semimetals (WSMs) and multi-Weyl semimetals (MSMs), within the framework of Landauer-Büttiker forma…
Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals
Supriyo Ghosh, Ambaresh Sahoo, Snehasish Nandy
Motivated by the recent proposal of giant Kerr rotation in WSMs, we investigate the Kerr and Faraday rotations in time-reversal broken multi-Weyl semimetals (mWSMs) in the absence…
Third-order Hall effect in the surface states of a topological insulator
Tanay Nag, Sanjib Kumar Das, Chuanchang Zeng +1
Time reversal and inversion symmetric materials fail to yield linear and nonlinear responses since they possess net zero Berry curvature. However, higher-order Hall response can be…
Giant anomalous thermal Hall effect in tilted type-I magnetic Weyl semimetal CoSnS
Abhirup Roy Karmakar, S. Nandy, A. Taraphder +1
The recent discovery of magnetic Weyl semimetal Co3Sn2S2 opens up new avenues for research into the interactions between topological orders, magnetism, and electronic correlations.…
Quantum oscillations of the nonlinear planar effects signifying chiral anomaly in Weyl Semimetals
Chuanchang Zeng, Snehasish Nandy, Pu Liu +2
In view of searching the signature of the celebrated chiral anomaly (CA) in Weyl semimetals (WSMs) in ongoing experiments, quantum oscillation in linear response regime has been co…
Nonreciprocal optics and magnetotransport in Weyl metals as signatures of band topology
S. Nandy, D. A. Pesin
We consider effects of spatial dispersion in noncentrosymmetric time-reversal invariant Weyl metals in the presence of a static magnetic field. In particular, we study currents tha…
Higher-order topological phases on fractal lattices
Sourav Manna, Snehasish Nandy, Bitan Roy
Electronic materials harbor a plethora of exotic quantum phases, ranging from unconventional superconductors to non-Fermi liquids, and, more recently, topological phases of matter.…
Chiral anomaly induced nonlinear Hall effect in multi-Weyl semimetals
Snehasish Nandy, Chuanchang Zeng, Sumanta Tewari
After the experimental realization, the Berry curvature dipole (BCD) induced nonlinear Hall effect (NLHE) has attracted tremendous interest to the condensed matter community. Here,…
Topological Magnus responses in two and three dimensional systems
Sanjib Kumar Das, Tanay Nag, Snehasish Nandy
Recently, time-reversal symmetric but inversion broken systems with non-trivial Berry curvature in the presence of a built-in electric field have been proposed to exhibit a new typ…
Chiral anomaly induced nonlinear Nernst and thermal Hall effects in Weyl semimetals
Chuanchang Zeng, Snehasish Nandy, Sumanta Tewari
Chiral anomaly or Adler-Bell-Jackiw anomaly in Weyl semimetals (WSMs) has a significant impact on the electron transport behaviors, leading to remarkable longitudinal or planar ele…
Nonlinear transport in Weyl semimetals induced by Berry curvature dipole
Chuanchang Zeng, Snehasish Nandy, Sumanta Tewari
Topological Weyl semimetals (WSMs) have been predicted to be excellent candidates for detecting Berry curvature dipole (BCD) and the related non-linear effects in electronics and o…
The sign of longitudinal magnetoconductivity and the planar Hall effect in Weyl semimetals
Gargee Sharma, S. Nandy, Sumanta Tewari
The manifestation of chiral anomaly in Weyl semimetals typically relies on the observation of longitudinal magnetoconductance (LMC) along with the planar Hall effect, with a specif…
Probing mirror anomaly and classes of Dirac semimetals with circular dichroism
Abhirup Roy Karmakar, S. Nandy, G. P. Das +1
We theoretically investigate the optical activity of three dimensional Dirac semimetals (DSMs) using circular dichroism (CD). We show that DSMs in the presence of a magnetic field…
Chiral magnetic effect of hot electrons
S. Nandy, D. A. Pesin
We propose a way to observe the chiral magnetic effect in non-centrosymmetric Weyl semimetals under the action of strong electric field, via the non-linear part of their I-V charac…
Fundamental relations for anomalous thermoelectric transport coefficients in the non-linear regime
Chuanchang Zeng, Snehasish Nandy, Sumanta Tewari
In a series of recent papers anomalous Hall and Nernst effects have been theoretically discussed in the non-linear regime and have seen some early success in experiments. In this p…
Dynamic chiral magnetic effect and anisotropic natural optical activity of tilted Weyl semimetals
Urmimala Dey, S. Nandy, A. Taraphder
We study the dynamic chiral magnetic conductivity (DCMC) and natural optical activity in an inversion-broken tilted Weyl semimetal (WSM). Starting from the Kubo formula, we derive…
Non-linear Nernst effect in bilayer WTe
Chuanchang Zeng, Snehasish Nandy, A. Taraphder +1
Unlike the conventional (linear) anomalous Nernst effect, the non-linear anomalous Nernst effect (NLANE) can survive in an inversion symmetry broken system even in the presence of…
Symmetry and Quantum Kinetics of the Non-linear Hall Effect
Snehasish Nandy, Inti Sodemann
We argue that the static non-linear Hall conductivity can always be represented as a vector in two-dimensions and as a pseudo-tensor in three-dimensions independent of its microsco…
Magneto-transport phenomena of type-I multi-Weyl semimetals in co-planar setups
Tanay Nag, Snehasish Nandy
Having the chiral anomaly induced magneto-transport phenomena extensively studied in single Weyl semimetal (WSM) as characterized by topological charge , we here address the t…
Mirror anomaly and anomalous Hall effect in type-I Dirac semimetals
S. Nandy, Kush Saha, A. Taraphder +1
In addition to the well known chiral anomaly, Dirac semimetals have been argued to exhibit mirror anomaly, close analogue to the parity anomaly of ()-dimensional massive Dirac…
Generalized Triple-Component Fermions: Lattice Model, Fermi arcs, and Anomalous Transport
Snehasish Nandy, Sourav Manna, Dumitru Calugaru +1
We generalize the construction of time-reversal symmetry-breaking triple-component semimetals, transforming under the pseudospin-1 representation, to arbitrary (anti-)monopole char…
Planar Thermal Hall Effect in Weyl Semimetals
S. Nandy, A. Taraphder, Sumanta Tewari
Weyl semimetals are intriguing topological states of matter that support various anomalous magneto-transport phenomena. One such phenomenon is a negative longitudinal ($\mathbf{\na…
Berry phase theory of planar Hall effect in Topological Insulators
S. Nandy, A. Taraphder, Sumanta Tewari
Negative longitudinal magnetoresistance, in the presence of an external magnetic field parallel to the direction of an applied current, has recently been experimentally verified in…