739 citations · 2.1k across the 60 of their papers we have counts for
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Highly tunable layered exciton in bilayer WS: linear quantum confined Stark effect versus electrostatic doping
Sarthak Das, Medha Dandu, Garima Gupta +6
In 1H monolayer transition metal dichalcogenide, the inversion symmetry is broken, while the reflection symmetry is maintained. On the contrary, in the bilayer, the inversion symme…
Anomalous Stark Shift of Excitonic Complexes in Monolayer Semiconductor
Nithin Abraham, Kenji Watanabe, Takashi Taniguchi +1
Monolayer transition metal dichalcogenide semiconductors host strongly bound two-dimensional excitonic complexes, and form an excellent platform for probing many-body physics throu…
Astability versus Bistability in van der Waals Tunnel Diode for Voltage Controlled Oscillator and Memory Applications
Nithin Abraham, Krishna Murali, Kenji Watanabe +2
Van der Waals (vdW) tunnel junctions are attractive due to their atomically sharp interface, gate tunablity, and robustness against lattice mismatch between the successive layers.…
Anharmonicity in Raman-active phonon modes in atomically thin MoS
Suman Sarkar, Indrajit Maity, H. L. Pradeepa +10
Phonon-phonon anharmonic effects have a strong influence on the phonon spectrum; most prominent manifestation of these effects are the softening (shift in frequency) and broadening…
Unified benchmarking and characterization protocol for nanomaterial-based heterogeneous photodetector technologies
Nithin Abraham, Kausik Majumdar
Over the last few years, there has been a rapid growth towards demonstrating highly sensitive, fast photodetectors using photoactive nano-materials. As with any other developing an…
Gate- and Light-Tunable Negative Differential Resistance with High Peak Current Density in 1T-TaS/2H-MoS T-Junction
Mehak Mahajan, Kausik Majumdar
Metal-based electronics is attractive for fast and radiation-hard electronic circuits and remains one of the longstanding goals for researchers. The emergence of 1T-TaS, a laye…
Gate-tunable trion switch for excitonic device applications
Sarthak Das, Sangeeth Kallatt, Nithin Abraham +1
Trions are excitonic species with a positive or negative charge, and thus, unlike neutral excitons, the flow of trions can generate a net detectable charge current. Trions under fa…
Origin of selective enhancement of sharp defect emission lines in monolayer WSe on rough metal substrate
Raghav Chaudhary, Varun Raghunathan, Kausik Majumdar
The defect states in atomically thin layers of transition metal dichalcogenides are promising candidates for single photon emission. However, the brightness of such quantum emissio…
Spectrally tunable, large Raman enhancement from nonradiative energy transfer in van der Waals heterostructure
Medha Dandu, Kenji Watanabe, Takashi Taniguchi +2
Raman enhancement techniques are essential for fundamental studies in light-matter interactions and find widespread application in microelectronics, bio-chemical sensing, and clini…