4 papers
Twist Angle Dependent Ultrafast Transient Dynamics of MoSe/WSe van der Waals Heterostructures beyond the Exciton Mott Transition
Vikas Arora, Pramoda K Nayak, Victor S Muthu +1
Two-dimensional van der Waals heterostructures (HS) exhibit twist-angle () dependent interlayer charge transfer, driven by moiré potential that tunes the electronic band struc…
Ultrafast Dynamics of Coherent Phonon Modes in Excitonic Insulator TaNiSe
Vikas Arora, Sukanya Pal, Luminita Harnagea +2
The spontaneous condensation of excitons in the excitonic insulating phase has been reported in TaNiSe below 325 K. In this context, we present the temperature-dependent op…
Pressure Dependence of Ultrafast Carrier Dynamics in Excitonic Insulator TaNiSe
Vikas Arora, Victor S Muthu, Arijit Sinha +3
An excitonic insulator (EI) phase is a consequence of collective many-body effects where an optical band gap is formed by the condensation of electron-hole pairs or excitons. We re…
Ultrafast Spectroscopy of Dirac Semimetal Cd3As2 under Pressure
Vikas Arora, D. V. S. Muthu, R Sankar +1
Topological properties of a three-dimensional Dirac semimetal Cd3As2, protected by crystal rotation and time-reversal symmetry, can be tuned with the application of pressure. Ultra…