105 citations · 187 across the 27 of their papers we have counts for
15 papers · 1 filter
Tunable Electronic Correlations in 135-Kagome Metals
Matteo Crispino, Niklas Witt, Stefan Enzner +4
Kagome metals exhibit rich correlated-electron physics, yet a systematic understanding of the degree of correlation across transition-metal species remains elusive. Using density-f…
Kagome metals
Domenico Di Sante, Titus Neupert, Giorgio Sangiovanni +5
Three important driving forces for creating qualitatively new phases in quantum materials are the topology of the materials' electronic band structures, frustration in the electron…
Local-moment magnetism in Mn-based pnictides
Matteo Crispino, Niklas Witt, Tommaso Gorni +2
We report a comprehensive study of electronic-correlation effects in Manganese-based antiferromagnetic pnictides BaMnPn (Pn=P,As,Sb,Bi). Our density functional theory plus…
Robust Orbital-Selective Flat Bands in Transition-Metal Oxychlorides
Xiangyu Luo, Ludovica Zullo, Sahaj Patel +10
Flat electronic bands, which amplify electron correlations by quenching kinetic energy, provide an ideal foundation for exotic quantum phases. However, prevailing strategies -- inc…
Optically Tunable Spin Transport in Bilayer Altermagnetic Mott Insulators
Niklas Sicheler, Roberto Raimondi, Giorgio Sangiovanni +1
Altermagnets are a novel class of materials that combine antiferromagnetic spin ordering with non-relativistic spin splitting (NRSS) in their band structure, making them promising…
Inducing ferromagnetism by structural engineering in a strongly spin-orbit coupled oxide
Ji Soo Lim, Carmine Autieri, Merit Spring +17
Magnetic materials with strong spin-orbit coupling (SOC) are essential for the advancement of spin-orbitronic devices, as they enable efficient spin-charge conversion, complex magn…
Superconductivity governed by Janus-faced fermiology in strained bilayer nickelates
Siheon Ryee, Niklas Witt, Giorgio Sangiovanni +1
High-temperature superconductivity in pressurized and strained bilayer nickelates (La,Pr)NiO has emerged as a new frontier. One of the key unresolved issues concerns th…
Phonon fluctuation diagnostics: Origin of charge order in AVSb kagome metals
Stefan Enzner, Jan Berges, Arne Schobert +7
The microsopic origin of the charge-density wave (CDW) in AVSb (A = K, Rb, Cs) kagome metals remains a longstanding question, often revolving around electron-phonon couplin…
Backscattering in Topological Edge States Despite Time-Reversal Symmetry
Jonas Erhardt, Mattia Iannetti, Fernando Dominguez +7
Spin-momentum-locked edge states of quantum spin Hall insulators (QSHIs) provide a compelling platform for spintronic applications, owing to their intrinsic protection against back…
Real-Space Switching of Local Moments Driven by Quantum Geometry in Correlated Graphene Heterostructures
Niklas Witt, Siheon Ryee, Lennart Klebl +3
Graphene-based multilayer systems serve as versatile platforms for exploring the interplay between electron correlation and topology, thanks to distinctive low-energy bands marked…
Anomalous spin-optical helical effect in Ti-based kagome metal
Federico Mazzola, Wojciech Brzezicki, Chiara Bigi +32
The kagome lattice stands as a rich platform for hosting a wide array of correlated quantum phenomena, ranging from charge density waves and superconductivity to electron nematicit…
Hund flat band in a frustrated spinel oxide
Dongjin Oh, Alexander Hampel, Joshua P. Wakefield +26
Electronic flat bands associated with quenched kinetic energy and heavy electron mass have attracted great interest for promoting strong electronic correlations and emergent phenom…
Robust spin splitting and fermiology in the layered altermagnet CoNb4Se8
Alessandro De Vita, Chiara Bigi, Davide Romanin +44
Altermagnetism defies conventional classifications of collinear magnetic phases, combining compensated magnetization with momentum-dependent, nonrelativistic spin splitting. While…
Probing Green's Function Zeros by Co-tunneling through Mott Insulators
Carl Lehmann, Lorenzo Crippa, Giorgio Sangiovanni +1
Quantum tunneling experiments have provided deep insights into basic excitations occurring as Green's function poles in the realm of complex quantum matter. However, strongly corre…
Probing Magnetism in Self-Assembled Organometallic Complexes using Kondo Spectroscopy
Wantong Huang, Paul Greule, Máté Stark +6
Control of individual spins at the atomic level holds great promise for miniaturized spintronics, quantum sensing, and quantum information processing. Both single atomic and molecu…