1.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Tata Institute of Fundamental ResearchIN874 papers
- Centre National de la Recherche ScientifiqueFR832 papers
- California Institute of TechnologyUS802 papers
- University of Maryland, College ParkUS798 papers
- Cornell UniversityUS796 papers
- Saha Institute of Nuclear PhysicsIN796 papers
- University of AntwerpBE796 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT794 papers
- National Central UniversityTW794 papers
- University of WarsawPL794 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaIT793 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIT793 papers
52 papers · 1 filter
Voltage-Regulated Photoluminescence Modulation in a 0D-2D Mixed Dimensional Heterostructure
S. V. U. Vedhanth, Amit Bhunia, Mohit Kumar Singh +3
Bias dependent oscillations in excitonic photoluminescence are observed in a mixed dimensional 0D 2D heterostructure. These oscillations arise from modulation by oscillatory DC pho…
Exciton-Selective Phonon Coupling in a Lead Halide Perovskite
Pradeepa H. L., Sagnik Chatterjee, Sayantan Patra +6
Exciton-phonon interactions govern the optical response of semiconductors, yet disentangling multiple coupling channels in lead halide perovskites remains challenging. We investiga…
Observation of resistive switching and diode effect in the conductivity of TiTe2 point contacts
O. E. Kvitnitskaya, L. Harnagea, O. D. Feia +3
We measured the I(V) and dV/dI(V) characteristics of TiTe2-based point contacts (PCs) from room to helium temperatures. Features indicating the emergence of a charge density wave (…
Edge reconstruction of compressible Quantum Hall fluid in the filling fraction range 1/3 to 2/3
Suvankar Purkait, Tanmay Maiti, Pooja Agarwal +6
Edge reconstruction of gate-tunable compressible quantum Hall fluids in the filling fraction range 1/3 to 2/3 is studied by measuring transmitted conductance of two individually ex…
Effects of Reduced Interlayer Interactions on the K-point Excitons of MoS Nanoscrolls
Sagnik Chatterjee, Tamaghna Chowdhury, Pablo Díaz Núñez +6
Transition metal dichalcogenide (TMD) nanoscrolls (NS) exhibit significant photoluminescence (PL) signals despite their multilayer structure, which cannot be explained by the strai…
Electron-phonon interaction, magnetic phase transition, charge density waves and resistive switching in VS2 and VSe2 revealed by Yanson point contact spectroscopy
D. L. Bashlakov, O. E. Kvitnitskaya, S. Aswartham +5
VS2 and VSe2 have attracted particular attention among the transition metals dichalcogenides because of their promising physical properties concerning magnetic ordering, charge den…
Tensile strain induced brightening of momentum forbidden dark exciton in WS
Tamaghna Chowdhury, Sagnik Chatterjee, Dibyasankar Das +8
Transition-metal dichalcogenides (TMDs) host tightly bound quasi-particles called excitons. Based on spin and momentum selection rules, these excitons can be either optically brigh…
Universality of Quantum Phase Transitions in the Integer and Fractional Quantum Hall Regimes
Simrandeep Kaur, Tanima Chanda, Kazi Rafsanjani Amin +7
Fractional quantum Hall (FQH) phases emerge due to strong electronic interactions and are characterized by anyonic quasiparticles, each distinguished by unique topological paramete…
Engineering 2D material exciton lineshape with graphene/h-BN encapsulation
Steffi Y. Woo, Fuhui Shao, Ashish Arora +20
Control over the optical properties of atomically thin two-dimensional (2D) layers, including those of transition metal dichalcogenides (TMDs), is needed for future optoelectronic…
Quantum coherent control of nonlinear thermoelectric transport in a triple-dot Aharonov-Bohm heat engine
Jayasmita Behera, Salil Bedkihal, Bijay Kumar Agarwalla +1
We investigate the role of quantum coherence and higher harmonics resulting from multiple-path interference in nonlinear thermoelectricity in a two-terminal triangular triple-dot A…
Excitonic Absorption Signatures of Twisted Bilayer WSe by Electron Energy-Loss Spectroscopy
Steffi Y. Woo, Alberto Zobelli, Robert Schneider +7
Moiré twist angle underpins the interlayer interaction of excitons in twisted van der Waals hetero- and homo-structures. The influence of twist angle on the excitonic absorption of…
Modulation of trion and exciton formation in monolayer WS2 by dielectric and substrate engineering
Tamaghna Chowdhury, Diptabrata Paul, Divya Nechiyil +5
Photoluminescence (PL) of transition metal dichalcogenide (TMD) monolayers is strongly influenced by the dielectric environment. The defect states present in the substrate induces…
Environment assisted superballistic scaling of conductance
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni +1
We find that, in the presence of weak incoherent effects from surrounding environments, the zero temperature conductance of nearest neighbour tight-binding chains exhibits a counte…
High-performance broadband Faraday rotation spectroscopy of 2D materials and thin magnetic films
Benjamin Carey, Nils Kolja Wessling, Paul Steeger +8
We present a Faraday rotation spectroscopy (FRS) technique for measurements on the micron scale. Spectral acquisition speeds of many orders of magnitude faster than state-of-the-ar…
Quantum transport in quasi-periodic lattice systems in presence of Büttiker probes
Madhumita Saha, B. Prasanna Venkatesh, Bijay Kumar Agarwalla
Quasi-periodic lattice systems offer diverse transport properties. In this work, we investigate the environment induced effects on transport properties for quasi-periodic systems,…
Effect of spin-orbit interaction on circular current: Pure spin current phenomena within a ring conductor
Moumita Patra
A net circulating current may appear within a quantum ring under finite bias. We study the characteristic features of the circular current in the presence of Rashba spin-orbit inte…
Substrate influence on transition metal dichalcogenide monolayer exciton absorption linewidth broadening
Fuhui Shao, Steffi Y. Woo, Nianjheng Wu +13
The excitonic states of transition metal dichacolgenide (TMD) monolayers are heavily influenced by their external dielectric environment based on the substrate used. In this work,…
Anderson localization in fractional quantum Hall effect
Songyang Pu, G. J. Sreejith, J. K. Jain
The interplay between interaction and disorder-induced localization is of fundamental interest. This article addresses localization physics in the fractional quantum Hall state, wh…
Temperature dependent equilibration of spin orthogonal quantum Hall edge modes
Tanmay Maiti, Pooja Agarwal, Suvankar Purkait +5
Conductance of the edge modes as well as conductance across the co-propagating edge modes around the ν= 4/3, 5/3 and 2 quantum Hall states are measured by individually exciting the…
Sub-diffusive phases in open clean long-range systems
Archak Purkayastha, Madhumita Saha, Bijay Kumar Agarwalla
We show that a one-dimensional ordered fermionic lattice system with power-law-decaying hopping, when connected to two baths at its two ends with different chemical potentials at z…
Optoelectronic characterisation of twisted germanium sulfide nanowires with experimental observation of intrinsic ferroelectricity
Tamaghna Chowdhury, Aastha Vasdev, Goutam Sheet +1
We report the optoelectrical characterisation of Eshelby twisted Germanium sulfide (GeS) nanowires with first experimental observation of ferroelectric order at room temperature in…
Read-out of Quasi-periodic Systems using Qubits
Madhumita Saha, Bijay Kumar Agarwalla, B. Prasanna Venkatesh
We develop a theoretical scheme to perform a read-out of the properties of a quasi-periodic system by coupling it to one or two qubits. We show that the decoherence dynamics of a s…
Magnetic field dependent equilibration of fractional quantum Hall edge modes
Tanmay Maiti, Pooja Agarwal, Suvankar Purkait +5
Fractional conductance is measured by partitioning edge state using gate-tunable fractional quantum Hall (FQH) liquids of filling 1/3 or 2/3 for current injection and detect…
Thermodynamic uncertainty relation in atomic-scale quantum conductors
Hava Meira Friedman, Bijay Kumar Agarwalla, Ofir Shein-Lumbroso +2
The thermodynamic uncertainty relation (TUR) is expected to hold in nanoscale electronic conductors, when the electron transport process is quantum coherent and the transmission pr…