6 citations · 16 across the 14 of their papers we have counts for
15 papers
Intensity-driven Mott-like transition in a 2D Ruddlesden-Popper perovskite
Koushik Mondal, Amit Haldar, Indrajit Mondal +7
Two-dimensional Ruddlesden-Popper-type halide perovskites have emerged as promising cutting-edge nonlinear optical materials due to their strong excitonic effects and carrier-densi…
Soft-mode nonlinearities away from ferroelectric phase transition
Payel Shee, Ipek Efe, Jingwen Li +3
The interplay between ionic and electronic subsystems dictates the behavior of structural phase transitions in polar dielectrics, a coupling mediated by soft optical phonon modes.…
The interplay of crystal-field transitions and exchange spin dynamics in a ferrimagnet
Arpita Dutta, Pratyay Mukherjee, Ritwik Mondal +1
Rare-earth iron garnets offer an ideal platform for exploring the interplay of low-energy excitations and the complex temperature-dependent magnetization dynamics. In these systems…
Spectroscopic signatures of Kohn anomaly in a topological crystalline insulator
Jingwen Li, Arpita Dutta, Kush Saha +4
Topological crystalline insulators extend the concept of topological insulators by hosting surface states protected by crystallographic symmetry. Their topological phase transition…
Unveiling nonlinearities of electromagnetically induced transparency in a THz metamaterial
Amit Haldar, Shriganesh Prabhu, Shovon Pal
Electromagnetically induced transparency (EIT) in terahertz (THz) metamaterials relies on the coherent coupling between a radiative (bright) mode and a subradiant (dark) mode. Unde…
The interplay of magnetic order with the electronic scattering and crystal-field effects in a metallic ferromagnet
Payel Shee, Tanaya Halder, Chia-Jung Yang +9
The interplay between magnetic order, charge dynamics, and crystal field excitations underpins the emergent ground states of rare-earth intermetallics. Using time-domain terahertz…
Phonon-polariton mediated dual electromagnetically induced transparency-like response in a THz metamaterial
Amit Haldar, Kshitij V Goyal, Ruturaj V Puranik +9
Light and matter can intertwine to create entirely new quantum states in the so-called strong-coupling regime, allowing unprecedented control over electromagnetic waves. In this wo…
Field-derivative torque induced magnetization reversal in ferrimagnetic GdYbBiFeO
Pratyay Mukherjee, Arpita Dutta, Somasree Bhattacharjee +2
Understanding the mechanism of spin switching in ferrimagnets via the excitation of THz pulses holds promise for future-generation magnetic memory devices. Such spin switching can…
Discovery of an intrinsic non-Hermitian phase transition in a bulk condensed-matter system
Jingwen Li, Michael Turaev, Masakazu Matsubara +5
Across regular phase transitions, systems remain in thermal equilibrium. However, when a system is driven far from equilibrium, non-Hermitian phase transitions may arise where the…
Role of material-dependent properties in THz field-derivative-torque-induced nonlinear magnetization dynamics
Arpita Dutta, Pratyay Mukherjee, Swosti P. Sarangi +3
The traditional Landau-Lifshitz-Gilbert (LLG) equation has often delineated the linear and nonlinear magnetization dynamics, even at ultrashort timescales e.g., femtoseconds. In co…
Missing spectral weight in a heavy-fermion system far above Néel temperature
Jingwen Li, Debankit Priyadarshi, Chia-Jung Yang +6
The competition between the Kondo spin-screening effect and the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in heavy-fermion systems drives the quantum phase transition betwee…
Evidence of relativistic field-derivative torque in nonlinear THz response of magnetization dynamics
Arpita Dutta, Christian Tzschaschel, Debankit Priyadarshi +4
Understanding the complete light-spin interactions in magnetic systems is the key to manipulating the magnetization using optical means at ultrafast timescales. The selective addre…
Magnetoelectric phase control at domain-wall-like epitaxial oxide multilayers
Elzbieta Gradauskaite, Chia-Jung Yang, Shovon Pal +2
Ferroelectric domain walls are nanoscale objects that can be created, positioned, and erased on demand. They often embody functional properties that are distinct from the surroundi…
Terahertz crystal electric field transitions in a Kondo-lattice antiferromagnet
Payel Shee, Chia-Jung Yang, Shishir Kumar Pandey +5
Hybridization between the localized f-electrons and the delocalized conduction electrons together with the crystal electric field (CEF) play a determinant role in governing the man…
Kondo coherence versus superradiance in THz radiation-driven heavy-fermion systems
Chia-Jung Yang, Michael Woerner, Oliver Stockert +4
In strongly correlated systems such as heavy-fermion materials, the coherent superposition of localized and mobile spin states leads to the formation of Kondo resonant states, whic…