158 citations · 397 across the 23 of their papers we have counts for
23 papers
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…
Electron-Phonon-Driven Three-Dimensional Metallicity in an Insulating Cuprate
Edoardo Baldini, Michael A. Sentef, Swagata Acharya +9
The role of the crystal lattice for the electronic properties of cuprates and other high-temperature superconductors remains controversial despite decades of theoretical and experi…
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…
Questaal: a package of electronic structure methods based on the linear muffin-tin orbital technique
Dimitar Pashov, Swagata Acharya, Walter R. L. Lambrecht +5
This paper summarises the theory and functionality behind Questaal, an open-source suite of codes for calculating the electronic structure and related properties of materials from…
Possible phonon-induced electronic bi-stability in VO for ultrafast memory at room temperature
Cédric Weber, Swagata Acharya, Brian Cunningham +9
VO is a model material system which exhibits a metal to insulator transition at 67C. This holds potential for future ultrafast switching in memory devices, but typica…
Self-assembly of correlated Kondo lattices: The Mott to Kondo transition in diluted superlattices
Hovan Lee, Evgeny Plekhanov, David Blackbourn +2
In the field of condensed matter, the quest to obtain an experimental realization of a Kondo lattice has generated a tremendous effort of the community, from both standpoints of ex…
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,…
Emergent Strange Nodal Metallicity from Orbital-Selective Mott Physics
Swagata Acharya, Mukul S. Laad, Nagamalleswararao Dasari +3
While a specific kind of strange metal is increasingly found to be the "normal" states in a wide variety of unconventional superconductors, its microscopic origin is presently a ho…
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…
Nematic Fluctuations in Iron-Oxychalcogenide Mott Insulators
B. Freelon, R. Sarkar, S. Kamusella +19
Nematic fluctuations occur in a wide range of physical systems from liquid crystals to biological molecules to solids such as exotic magnets, cuprates and iron-based high- sup…
First-Principles Correlated Approach to the Normal State of Strontium Ruthenate
Swagata Acharya, M. S. Laad, Dibyendu Dey +2
The interplay between multiple bands, sizable multi-band electronic correlations and strong spin-orbit coupling may conspire in selecting a rather unusual unconventional pairing sy…
Anomalous transport near the Lifshitz transition at the LaAlO/SrTiO interface
S. Nandy, N. Mohanta, S. Acharya +1
The two-dimensional electron liquid, at the (001) interface between band insulators {L}a{A}l{O} and {S}r{T}i{O}, undergoes Lifshitz transition as the interface is doped wit…
The Iso-electronic Series : Structural Distortion, Effective Dimensionality, Spin Fluctuations and Quantum Criticality
Swagata Acharya, Dibyendu Dey, T Maitra +1
The iso-electronic compounds of the series show rich phase diagrams due to competing spin, charge and orbital degrees of freedom in presence of strong correlations and…
Manifestations of Strange Metallicity in Inelastic Neutron Studies
Swagata Acharya, M. S. Laad, A. Taraphder
Emergence of an orbital-selective Mott phase (OSMP) found in multi-band correlated systems leads to a non-perturbative obliteration of the Landau Fermi liquid in favor of a novel m…
Self-energies in itinerant magnets: A focus on Fe and Ni
L. Sponza, P. Pisanti, A. Vishina +6
We present a detailed study of local and non-local correlations in the electronic structure of elemental transition metals carried out by means of the Quasiparticle Self-consistent…
A DMFT+CTQMC Investigation of Strange Metallicity in Local Quantum Critical Scenario
Swagata Acharya, M S Laad, A Taraphder
Strange metallicity is now a pseudonym for a novel metallic state exhibiting anomalous infra-red (branch-cut) continuum features in one and two particle responses. Here, we employ…
Quantum critical dynamics of a magnetic impurity in a semiconducting host
Nagamalleswararao Dasari, Swagata Acharya, A. Taraphder +3
We have investigated the finite temperature dynamics of the singlet to doublet continuous quantum phase transition in the gapped Anderson impurity model using hybridization expansi…
Emergent Quantum Coherence from Instabilities of a Perturbed Fractionalized Spin Liquid
Swagata Acharya, M. S. Laad, A. Taraphder
Effects of perturbations on topologically ordered (TO) states with fractionalized excitations is very intriguing. While small perturbations are not expected to affect a robust TO,…
Feasibility of a metamagnetic transition in correlated systems
Swagata Acharya, Amal Medhi, N. S. Vidhyadhiraja +1
The long-standing issue of the competition between the magnetic field and the Kondo effect, favoring, respectively, triplet and singlet ground states is addressed using a cluster s…
The role of flow geometry in influencing the stability criteria for low angular momentum axisymmetric black hole accretion
S. Nag, S. Acharya, A. K. Ray +1
Using mathematical formalism borrowed from dynamical systems theory, a complete analytical investigation of the critical behaviour of the stationary flow configuration for the low…