8 papers
Strongly correlated model of acousticlike plasmons persisting across the phase diagram of cuprate superconductors
Luciano Zinni, Hiroyuki Yamase, Matthias Hepting +2
Layered two-dimensional electron systems exhibit both optical and acousticlike plasmons around the Brillouin-zone center. In the layered cuprate LaSrCuO, resonant i…
Raman response in superconducting multiorbital systems with application to nickelates
MatÃas Bejas, Jun Zhan, Xianxin Wu +2
The recent discovery of high- superconductivity in pressurized and thin film nickelates is nowadays one of the most relevant and active topics in solid-state physics. The orig…
Detecting pairing symmetry of bilayer nickelates using electronic Raman scattering
Jun Zhan, MatÃas Bejas, Andreas P. Schnyder +3
The recent discovery of high-temperature superconductivity in both bulk and thin-film bilayer nickelates LaNiO has garnered significant attention. However, the correspo…
Strong-coupling theory of bilayer plasmon excitations
Hiroyuki Yamase, Luciano Zinni, MatÃas Bejas +1
Recently plasmon excitations in bilayer lattice systems were studied extensively in the weak-coupling regime. Unlike single-layer systems, these bilayers exhibit two distinct modes…
Multiorbital character of the density wave in trilayer nickelate superconductors
A. Suthar, V. Sundaramurthy, M. Bejas +15
Ruddlesden-Popper nickelates exhibit high-temperature superconductivity closely intertwined with charge and spin density waves. However, fundamental questions persist regarding the…
Out-of-plane bond-order phase, superconductivity, and their competition in the -- model: Possible implications for bilayer nickelates
MatÃas Bejas, Xianxin Wu, Debmalya Chakraborty +2
Almost four decades of intense research have been invested to study the physics of high-T cuprate superconductors. The recent discovery of high-T superconductivity in press…