489 citations · 1.9k across the 33 of their papers we have counts for
11 papers · 1 filter
Low energy excitations in A-site ordered SmBaMn2O6
Mirian Garcia Fernandez, Abhishek Nag, Stefano Agrestini +5
The electron in a solid can be considered a bound state of the three independent, fundamental degrees of freedom creating quasi-particles: spinons, carrying the electron spin; plas…
Non-equilibrium dynamics of spin-lattice coupling
Hiroki Ueda, Roman Mankowsky, Eugenio Paris +18
Interactions between the different degrees of freedom form the basis of many manifestations of intriguing physics in condensed matter. In this respect, quantifying the dynamics of…
Correlation driven near-flat band Stoner excitations in a Kagome magnet
Abhishek Nag, Yiran Peng, Jiemin Li +9
Among condensed matter systems, Mott insulators exhibit diverse properties that emerge from electronic correlations. In itinerant metals, correlations are usually weak, but can als…
Multiferroic-enabled magnetic exciton in 2D quantum entangled van der Waals antiferromagnet NiI2
Suhan Son, Youjin Lee, Jae Ha Kim +15
Matter-light interaction is at the center of diverse research fields from quantum optics to condensed matter physics, opening new fields like laser physics. A magnetic exciton is o…
Evolution of the electronic structure in TaNiSe across the structural transition revealed by resonant inelastic x-ray scattering
Haiyu Lu, Matteo Ross, 1Jung-ho Kim +11
We utilized high-energy-resolution resonant inelastic X-ray scattering (RIXS) at both the Ta and Ni -edges to map out element-specific particle-hole excitations in TaNiSe$…
Orbital and Spin Character of Doped Carriers in Infinite-Layer Nickelates
M. Rossi, H. Lu, A. Nag +13
The recent discovery of superconductivity in NdSrNiO has drawn significant attention in the field. A key open question regards the evolution of the electronic str…
Unraveling the orbital physics in a canonical orbital system KCuF
Jiemin Li, Lei Xu, Mirian Garcia-Fernandez +9
We explore the existence of the collective orbital excitations, orbitons, in the canonical orbital system KCuF. Using the Cu -edge resonant inelastic X-ray scattering we s…
Evolution of spin excitations from bulk to monolayer FeSe
J. Pelliciari, S. Karakuzu, Q. Song +17
The discovery of enhanced superconductivity (SC) in FeSe films grown on SrTiO3 (FeSe/STO) has revitalized the field of Fe-based superconductors. In the ultrathin limit, the superco…
Detection of Acoustic Plasmons in Hole-Doped Lanthanum and Bismuth Cuprate Superconductors Using Resonant Inelastic X-Ray Scattering
Abhishek Nag, M. Zhu, Matias Bejas +11
High Tc superconductors show a rich variety of phases associated with their charge degrees of freedom. Valence charges can give rise to charge ordering or acoustic plasmons in thes…
Multi-orbital charge density wave excitations and concomitant phonon anomalies in BiSrLaCuO
Jiemin Li, Abhishek Nag, Jonathan Pelliciari +9
Charge density waves (CDWs) are ubiquitous in under-doped cuprate superconductors. As a modulation of the valence electron density, CDWs in hole-doped cuprates possess both Cu-3d a…
Spin-orbital liquid state assisted by singlet-triplet excitation in ground state of BaZnIrO
Abhishek Nag, Srimanta Middey, Sayantika Bhowal +17
Strong spin-orbit coupling (SOC) effects of heavy -orbital elements have long been neglected in describing the ground states of their compounds thereby overlooking a variety of…