82 citations · 358 across the 11 of their papers we have counts for
11 papers
Stripe Symmetry of Short-range Charge Density Waves in Cuprate Superconductors
Jaewon Choi, Jiemin Li, Abhishek Nag +12
The omnipresence of charge density waves (CDWs) across almost all cuprate families underpins a common organizing principle. However, a longstanding debate of whether its spatial sy…
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…
Direct measurement of a remnant Fermi surface in SmB6
Thomas E. Millichamp, David Billington, Hannah C. Robarts +8
The quest to understand the nature of the electronic state in SmB6 has been challenging, perplexing and surprising researchers for over half a century. In the theoretically predict…
Unraveling higher-order corrections in the spin dynamics of RIXS spectra
Umesh Kumar, Abhishek Nag, Jiemin Li +9
Resonant inelastic x-ray scattering (RIXS) is an evolving tool for investigating spin dynamics of strongly correlated materials, which complements inelastic neutron scattering. Bot…
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…
Dynamical spin susceptibility in La2CuO4 studied by resonant inelastic x-ray scattering
H. C. Robarts, M. Garcia-Fernandez, J. Li +5
Resonant inelastic X-ray scattering (RIXS) is a powerful probe of elementary excitations in solids. It is now widely applied to study magnetic excitations. However, its complex cro…
Spectroscopic Evidence for Charge Order Melting via Quantum Fluctuations in a Cuprate
W. S. Lee, K. J. Zhou, M. Hepting +14
Copper-oxide high TC superconductors possess a number of exotic orders co-existing with or proximal to superconductivity, whose quantum fluctuations may account for the unusual beh…
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…
Extreme Fermi surface smearing in a maximally disordered concentrated solid solution
Hannah C. Robarts, Thomas E. Millichamp, Daniel A. Lagos +13
We show that the Fermi surface can survive the presence of extreme compositional disorder in the equiatomic alloy NiFeCoCr. Our high-resolution…
Anisotropic damping of the spin fluctuations in doped La2-xSrxCuO4 studied by resonant inelastic x-ray scattering
H. C. Robarts, M. Barthelemy, M. Garcia-Fernandez +5
We report high-resolution resonant inelastic x-ray scattering (RIXS) measurements of the collective spin fluctuations in three compositions of the superconducting cuprate system La…