18 citations · 51 across the 7 of their papers we have counts for
7 papers
Nonlinear bulk photocurrent probe Z2 topological phase transition
Debasis Dutta, Raihan Ahammed, Yingdong Wei +4
Detecting topological phase transitions in bulk is challenging due to the limitations of surface sensitive probes like ARPES. Here, we demonstrate that nonlinear bulk photocurrents…
Large quantum nonreciprocity in plasmons dragged by drifting electrons
Debasis Dutta, Amit Agarwal
Collective plasmon modes, riding on top of drifting electrons, acquire a fascinating nonreciprocal dispersion characterized by . The {\it classical}…
Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems
Debasis Dutta, Atasi Chakraborty, Amit Agarwal
Nonreciprocal plasmonics enables one-way light propagation at the nanoscale and it is an essential building block for photonics applications. Here, we explore intrinsic nonreciproc…
Tunable interband and intraband plasmons in twisted double bilayer graphene
Atasi Chakraborty, Debasis Dutta, Amit Agarwal
Flat bands in twisted moire superlattices support a variety of topological and strongly correlated phenomena along with easily tunable electrical and optical properties. Here, we d…
Collective plasmonic modes in the chiral multifold fermionic material CoSi
Debasis Dutta, Barun Ghosh, Bahadur Singh +4
Plasmonics in topological semimetals offers exciting opportunities for fundamental physics exploration as well as for technological applications. Here, we investigate plasmons in t…
Photonic Topological Transitions and Epsilon-Near-Zero Surface Plasmons in Type-II Dirac Semimetal NiTe
Carlo Rizza, Debasis Dutta, Barun Ghosh +8
Compared to artificial metamaterials, where nano-fabrication complexities and finite-size inclusions can hamper the desired electromagnetic response, several natural materials like…
Role of orbital off-diagonal spin and charge condensates in a three orbital model for -- Coulomb renormalized spin-orbit coupling, orbital moment, and tunable magnetic order
Shubhajyoti Mohapatra, Ritajit Kundu, Ashutosh Dubey +2
Strongly anisotropic spin-orbit coupling (SOC) renormalization and strongly enhanced orbital magnetic moments are obtained in the fully self consistent approach including the orbit…