28 citations · 71 across the 19 of their papers we have counts for
19 papers
Quetzalcoatlite as a Disorder-Free Platform for Chiral Magnetism and Frustration
Aleksandar Razpopov, P. Peter Stavropoulos, Michael R. Norman +2
The natural mineral quetzalcoatlite ZnCu(TeO)(OH) (AgPbCl) is a structurally ideal kagome magnet, providing a platform for exploring th…
Altermagnetism from a Cu-Fe Lieb Lattice in FeSe/Cuprate Heterostructures
Ying Li, Augustin Davignon, Peng Rao +4
Realizing altermagnetism in high- cuprate-based systems would provide a direct route for studying spin-split electronic bands in the absence of net magnetization and investiga…
Ab Initio Investigation of Pressure Effects in the Spin-Liquid Candidate Y-Kapellasite
Federico Abbruciati, Aleksandar Razpopov, Joao Elias F. S. Rodrigues +5
Motivated by recent experiments showing pressure-induced suppression of magnetic order and the emergence of a dynamical ground state in the anisotropic kagome antiferromagnet Y-kap…
Bobkingite, a new coupled sawtooth chain platform
P. Peter Stavropoulos, Aleksandar Razpopov, Harrison LaBollita +3
We investigate the mineral bobkingite, \ce{Cu5(OH)8Cl2(H2O)2}, as a potential realization of the sawtooth chain. Using \textit{ab initio} methods, we estimate the magnetic exchange…
Tuning Incommensurate Charge Order in BaSrAl and BaEuAl
Prathum Saraf, Eleanor M. Clements, Danila Sokratov +14
The BaAl-type structure family is home to a vast landscape of interesting and exotic properties, with descendant crystal structures hosting a variety of electronic ground state…
Exact downfolding and its perturbative approximation
Jonas B. Profe, Jakša Vučičević, P. Peter Stavropoulos +3
Solving the many-electron problem, even approximately, is one of the most challenging and simultaneously most important problems in contemporary condensed matter physics with vario…
Site-polarized Mott phases competing with a correlated metal in twisted WSe
Siheon Ryee, Lennart Klebl, Gautam Rai +9
Twisted WSe hosts superconductivity, metal-insulator phase transitions, and field-controllable Fermi-liquid to non-Fermi-liquid transport properties. In this work, we use dynam…
Microscopic origin of the magnetic interactions and their experimental signatures in altermagnetic LaOMnSe
Laura Garcia-Gassull, Aleksandar Razpopov, Panagiotis Peter Stavropoulos +2
Altermagnets (AM) are a recently introduced type of magnets, with no net magnetization like antiferromagnets, but displaying a non-relativistic Zeeman splitting in reciprocal space…
Resolving Intervalley Gaps and Many-Body Resonances in Moiré Superconductor
Hyunjin Kim, Gautam Rai, Lorenzo Crippa +15
Magic-angle twisted multilayer graphene stands out as a highly tunable class of moiré materials that exhibit strong electronic correlations and robust superconductivity. However, u…
Altermagnetic splitting of magnons in hematite (-FeO)
Rhea Hoyer, P. Peter Stavropoulos, Aleksandar Razpopov +3
We develop a four-sublattice spin-wave theory for the -wave altermagnet candidate hematite (-FeO), considering both its easy-axis phase below and its weak ferromagnet…
Band representations in Strongly Correlated Settings: The Kitaev Honeycomb Model
Axel Fünfhaus, Mikel García-Díez, M. G. Vergniory +3
In the study of quantum spin liquids, the Kitaev model plays a pivotal role due to the fact that its ground state is exactly known as well as the fact that it may be realized in st…
Exploring d-Wave Magnetism in Cuprates from Oxygen Moments
Ying Li, Valentin Leeb, Krzysztof Wohlfeld +2
The antiferromagnetic parent phase of high-T cuprates has been established as a Néel state of copper moments, but early work pointed out the important role of ligand oxygen orb…
Origin of the insulating state in the Kitaev candidate CuIrO
Ying Li, Roger D. Johnson, Yogesh Singh +2
Through a combination of crystal symmetry analysis and density functional theory calculations we unveil a possible microscopic origin of the unexpected insulating behavior reported…
Stability of algebraic spin liquids coupled to quantum phonons
Francesco Ferrari, Josef Willsher, Urban F. P. Seifert +2
Algebraic spin liquids are quantum disordered phases of insulating magnets which exhibit fractionalized gapless excitations and power-law correlations. Quantum spin liquids in this…
Multi-orbital two-particle self-consistent approach -- strengths and limitations
Jonas B. Profe, Jiawei Yan, Karim Zantout +2
Extending many-body numerical techniques which are powerful in the context of simple model calculations to the realm of realistic material simulations can be a challenging task. Re…
Understanding the microscopic origin of the magnetic interactions in CoNbO
Amanda A. Konieczna, David A. S. Kaib, Stephen M. Winter +1
Motivated by the on-going discussion on the nature of magnetism in the quantum Ising chain CoNbO, we present a first-principles-based analysis of its exchange interactions…
study of highly tunable charge transfer in -RuCl/graphene heterostructures
Aleksandar Razpopov, Roser Valentí
Heterostructures of graphene in proximity to magnetic insulators open the possibility to investigate exotic states emerging from the interplay of magnetism, strain and charge trans…
Why Scanning Tunneling Microscopy on SrRuO sometimes doesn't see the superconducting gap
Adrian Valadkhani, Jonas B. Profe, Andreas Kreisel +2
Scanning tunneling microscopy (STM) is perhaps the most promising way to detect the superconducting gap size and structure in the canonical unconventional superconductor SrRuO$…
Novel magnetism on a honeycomb lattice in a-RuCl3 studied by muon spin rotation
F. Lang, P. J. Baker, A. A. Haghighirad +4
Muon spin rotation measurements have been performed on a powder sample of a-RuCl3, a layered material which previously has been proposed to be a quantum magnet on a honeycomb latti…