158 citations · 751 across the 45 of their papers we have counts for
17 papers · 1 filter
Manipulation of localized excitons in CrPS by temperature and magnetic field
Dipankar Jana, Swagata Acharya, Amit Pawbake +9
Layered van der Waals magnetic semiconductors provide a versatile platform for exploring excitonic phenomena intertwined with spin and lattice degrees of freedom, enabling excitons…
Spin-quenching in molecule-transition-metal-dichalcogenide heterostructure through inverse proximity effect
Swagata Acharya, Dimitar Pashov, Daphne Lubert-Perquel +2
A functional heterostructure is central to integrated circuitry in quantum photonics, optoelectronics, neuromorphic computing, spintronics, and straintronics. Recently, heterostruc…
Origin of metal-insulator transition in rare-earth Nickelates
Swagata Acharya, Brooks Tellekamp, Jerome Jackson +4
Rare-earth nickelates RNiO3 (R=rare-earth element) exhibit three kinds of phase transitions with decreasing temperature: a structural transition from a pseudo-cubic to a monoclinic…
Good plasmons in a bad metal
Francesco L. Ruta, Yinming Shao, Swagata Acharya +12
Correlated materials may exhibit unusually high resistivity increasing linearly in temperature, breaking through the Mott-Ioffe-Regel bound, above which coherent quasiparticles are…
Giant exchange splitting in the electronic structure of A-type 2D antiferromagnet CrSBr
Matthew D. Watson, Swagata Acharya, James E. Nunn +6
We present the evolution of the electronic structure of CrSBr from its antiferromagnetic ground state to the paramagnetic phase above T_N=132 K, in both experiment and theory. Low…
Flat Bands at the Fermi Level in Unconventional Superconductor YFe2Ge2
R. Kurleto, C. -H. Wu, S. Acharya +15
We report heavy electron behavior in unconventional superconductor YFeGe ( K). We directly observe very heavy bands () within $\…
Paramagnetic Electronic Structure of CrSBr: Comparison between Ab Initio GW Theory and Angle-Resolved Photoemission Spectroscopy
Marco Bianchi, Swagata Acharya, Florian Dirnberger +9
We explore the electronic structure of paramagnetic CrSBr by comparative first principles calculations and angle-resolved photoemission spectroscopy. We theoretically approximate t…
A Theory for Colors of Strongly Correlated Electronic Systems
Swagata Acharya, Cedric Weber, Dimitar Pashov +3
Many strongly correlated transition metal insulators are colored, even though they have large fundamental band gaps and no quasi-particle excitations in the visible range. Why such…
First principles vs second principles: Role of charge self-consistency in strongly correlated systems
Swagata Acharya, Dimitar Pashov, Alexander N. Rudenko +3
First principles approaches have been successful in solving many-body Hamiltonians for real materials to an extent when correlations are weak or moderate. As the electronic correla…
Electronic Structure of Chromium Trihalides beyond Density Functional Theory
Swagata Acharya, Dimitar Pashov, Brian Cunningham +5
We explore the electronic band structure of free standing monolayers of chromium trihalides, CrX\textsubscript{3}{, X= Cl, Br, I}, within an advanced \emph{ab-initio} theoretical a…
Disentangling the role of bond lengths and orbital symmetries in controlling in YBaCuO
Francois Jamet, Cedric Weber, Swagata Acharya +2
Optimally doped YBCO (YBaCuO) has a high critical temperature, at 92 K. It is largely believed that Cooper pairs form in YBCO and other cuprates because of spin f…
Electronic structure correspondence of singlet-triplet scale separation in strained Sr2RuO4
Swagata Acharya, Dimitar Pashov, Elena Chachkarova +2
At a temperature of roughly 1\,K, \ce{Sr2RuO4} undergoes a transition from a normal Fermi liquid to a superconducting phase. Even while the former is relatively simple and well und…
Role of nematicity in controlling spin fluctuations and superconducting Tc in bulk FeSe
Swagata Acharya, Dimitar Pashov, Mark van Schilfgaarde
FeSe undergoes a transition from a tetragonal to a slightly orthorhombic phase at 90\,K, and becomes a superconductor below 8\,K. The orthorhombic phase is sometimes called a nemat…
Controlling T through band structure and correlation engineering in collapsed and uncollapsed phases of iron arsenides
Swagata Acharya, Dimitar Pashov, Francois Jamet +1
Recent observations of selective emergence (suppression) of superconductivity in the uncollapsed (collapsed) tetragonal phase of LaFeAs has rekindled interest in understand…
Interplay between band structure and Hund's correlation to increase T in FeSe
Swagata Acharya, Dimitar Pashov, Francois Jamet +1
FeSe is classed as a Hund's metal, with a multiplicity of bands near the Fermi level. Correlations in Hund's metals mostly originate from the exchange parameter \emph{J}, which…
Evening out the spin and charge parity to increase T in unconventional superconductor Sr_{2}RuO_{4}
Swagata Acharya, Dimitar Pashov, Cédric Weber +3
Unconventional superconductivity in SrRuO has been intensively studied for decades. The origin and nature of the pairing continues to be widely debated, in particular,…
Metal-insulator transition in copper oxides induced by apex displacements
Swagata Acharya, Cedric Weber, Evgeny Plekhanov +3
High temperature superconductivity has been found in many kinds of compounds built from planes of Cu and O, separated by spacer layers. Understanding why critical temperatures are…