37 citations · 203 across the 19 of their papers we have counts for
16 papers · 1 filter
Transport properties of the parent LaNiO2
Mijanur Islam, Sudipta Koley, Saurabh Basu
Here we study the transport properties of a nickelate compound, namely LaNiO2 using density functional theory (DFT) in conjunction with dynamical mean field theory (DMFT). An inter…
Engineering Si doping in anatase and rutile TiO with oxygen vacancy for efficient optical application
S. Koley
In this paper, I demonstrate a density functional theory plus dynamical mean field theory study on the electronic properties of doped rutile as well as another tetragonal p…
Charge Density Wave and Superconductivity in Transition Metal Dichalcogenides
S. Koley, N. Mohanta, A. Taraphder
Competing orders in condensed matter give rise to the emergence of fascinating, new phenomena. Here, we investigate the competition between superconductivity and charge density wav…
Orbital Selectivity and Magnetic Ordering in Fe intercalated Dirac Semimetal BiSe
S. Koley, Saurabh Basu
In this paper we investigate the intercalation effects of Iron (Fe) in the van der Waals gap of BiSe on the magnetic and transport properties using first-principles band st…
Superconductivity induced by Ag intercalation in Dirac semimetal BiSe
S. Koley, Saurabh Basu
Superconductivity in a doped topological insulator (TI) is a very interesting phenomenon and constitute a new finding of the modern day condensed matter physics. Here we have inves…
Origin of superconductivity in Ni-doped SrFe_2As_2 , an Insight from DMFT
S. Koley
I describe the issues of the competing orders in normal state of a parent and Ni-doped iron pnictide superconductor, SrF e 2 As 2 , using LMTO band structure calculation plus multi…
Do Dynamical Excitonic Liquid Correlations Mediate Superconductivity in Elemental Bismuth?
S. Koley, M. S. Laad, A. Taraphder
Motivated by the remarkable discovery of superconductivity in elemental Bismuth, we study its normal state in detail using a combination of tight-binding (TB) and-structural supple…
Phase Transition in IrTe induced by spin-orbit coupling
S. Koley
IrTe has been renewed as an interesting system showing competing phenomenon between a questionable density-wave transition near 270 K followed by superconductivity with doping…
Pressure Driven Phase Transition in 1T-TiSe , a MOIPT+DMFT Study
S Koley
The nature of unconventional superconductivity associated with charge density wave order in transition metal dichalcogenides is currently a debated issue. Starting from a normal st…
Mott transitions and Novel Orders in Multi-Orbital Models: The Relevance of Structural "Double Exchange"
Mukul S. Laad, S. Koley, A. Taraphder
In real transition-metal oxides, the so-called GdFeO3 octahedral tilt is long known to be a relevant control parameter influencing the range of orbital and magnetic ordered states…
Fermiology in a Local Quantum Critical Metal
Mukul S. Laad, S. Koley, A. Taraphder
Recent experimental work has brought the twin issues of the origin of non-Lifshitz-Kosevich scaling in de Haas van Alphen (dHvA) and its precise relation to anomalously broad non-q…
Charge-Density-Wave Order in 2H-NbSe
S. Koley, N. Mohanta, A. Taraphder
Competition between collective states like charge density wave and superconductivity is played out in some of the transition metal dichalcogenides unencumbered by the spin degrees…
Preformed Excitons, Orbital Selectivity, and Charge-Density-Wave Order in 1T-TiSe_2
S. Koley, M. S. Laad, N. S. Vidhyadhiraja +1
Traditional routes to Charge-Density-Wave in transition metal dichalcogenides, relying on Fermi surface nesting or Jahn-Teller instabilities have recently been brought into questio…
Orbital order in NaTiO : A first principles study
Monika Dhariwal, T. Maitra, Ishwar Singh +2
The debate over the orbital order in layered triangular lattice system NaTiO has been rekindled by the recent experiments of McQueen, et al. \cite{cava} on NaVO ({\em Phys.…
Quantum Critical Phase and Lifshitz Transition in an Extended Periodic Anderson Model
M. S. Laad, S. Koley, A Taraphder
We study the quantum phase transition in -electron systems as a quantum Lifshitz transition driven by selective Mott localization in a realistic extended Anderson lattice model.…
Preformed excitonic liquid route to a charge density wave in 2H-TaSe
A. Taraphder, S. Koley, N. S. Vidhyadhiraja +1
Recent experiments on 2H-TaSe contradict the long-held view of the charge density wave arising from a nested band structure. An intrinsically strong coupling view, involving a…