312 citations · 4.8k across the 79 of their papers we have counts for
17 papers · 1 filter
Monolayer van der Waals kagome lattice for high-temperature flat-band physics
Hyungkun Bong, Choongjae Won, Seongyong Lee +26
Kagome lattice materials host a remarkably rich landscape of novel quantum phenomena, all arising from the intrinsic interplay of topology, correlation, and frustration. While prev…
Photoemission Evidence of a Novel Charge Order in Kagome Metal FeGe
Zhisheng Zhao, Tongrui Li, Peng Li +16
A charge order has been discovered to emerge deep into the antiferromagnetic phase of the kagome metal FeGe. To study its origin, the evolution of the low-lying electronic structur…
Hierarchy of Lifshitz transitions in the surface electronic structure of SrRuO under uniaxial compression
Edgar Abarca Morales, Gesa-R. Siemann, Andela Zivanovic +12
We report the evolution of the electronic structure at the surface of the layered perovskite SrRuO under large in-plane uniaxial compression, leading to anisotropic $B_{1g}…
Tuneable electron-magnon coupling of ferromagnetic surface states in PdCoO
Federico Mazzola, Chi-Ming Yim, Veronika Sunko +11
Controlling spin wave excitations in magnetic materials underpins the burgeoning field of magnonics. Yet, little is known about how magnons interact with the conduction electrons o…
Signatures of Weyl fermion annihilation in a correlated kagome magnet
Ilya Belopolski, Tyler A. Cochran, Xiaoxiong Liu +22
The manipulation of topological states in quantum matter is an essential pursuit of fundamental physics and next-generation quantum technology. Here we report the magnetic manipula…
Observation of a uniaxial strain-induced phase transition in the 2D topological semimetal IrTe
C. W. Nicholson, M. Rumo, A. Pulkkinen +12
Strain is ubiquitous in solid-state materials, but despite its fundamental importance and technological relevance, leveraging externally applied strain to gain control over materia…
Signatures of a topological Weyl loop in CoSnS
Ilya Belopolski, Tyler A. Cochran, Stepan S. Tsirkin +13
The search for novel topological phases of matter in quantum magnets has emerged as a frontier of condensed matter physics. Here we use state-of-the-art angle-resolved photoemissio…
Direct observation of the energy gain underpinning ferromagnetic superexchange in the electronic structure of CrGeTe
Matthew D. Watson, Igor Marković, Federico Mazzola +12
We investigate the temperature-dependent electronic structure of the van der Waals ferromagnet, CrGeTe. Using angle-resolved photoemission spectroscopy, we identify atomic- and…
Orbitally selective breakdown of Fermi liquid quasiparticles in CaSrRuO
Denys Sutter, Minjae Kim, Christian Matt +16
We present a comprehensive angle-resolved photoemission spectroscopy study of CaSrRuO. Four distinct bands are revealed and along the Ru-O bond direction their…
An ideal Weyl semimetal induced by magnetic exchange
J. -R. Soh, F. de Juan, M. G. Vergniory +15
Weyl semimetals exhibit exceptional quantum electronic transport due to the presence of topologically-protected band crossings called Weyl nodes. The nodes come in pairs with oppos…
Mass enhancements and band shifts in strongly hole overdoped Fe-based pnictide superconductors: KFeAs and CsFeAs
S. -L. Drechsler, H. Rosner, V. Grinenko +11
The interplay of high and low-energy mass renormalizations with band-shifts reflected by the positions of van Hove singularities (VHS) in the normal state spectra of the highest ho…
Orbital- and -selective hybridisation of Se 4p and Ti 3d states in the charge density wave phase of TiSe
Matthew D. Watson, Oliver J. Clark, Federico Mazzola +5
We revisit the enduring problem of the charge density wave (CDW) order in TiSe, utilising photon energy-dependent angle-resolved photoemission spectroscop…
Electronic structure of the candidate 2D Dirac semimetal SrMnSb2: a combined experimental and theoretical study
S. V. Ramankutty, J. Henke, A. Schiphorst +15
SrMnSb is suggested to be a magnetic topological semimetal. It contains square, 2D Sb planes with non-symmorphic crystal symmetries that could protect band crossings, offering…
Itinerant ferromagnetism of the Pd-terminated polar surface of PdCoO
F. Mazzola, V. Sunko, S. Khim +9
We study the electronic structure of the Pd-terminated surface of the non-magnetic delafossite oxide metal PdCoO. Combining angle-resolved photoemission spectroscopy and densit…
Maximal Rashba-like spin splitting via kinetic energy-driven inversion symmetry breaking
Veronika Sunko, H. Rosner, P. Kushwaha +13
Engineering and enhancing inversion symmetry breaking in solids is a major goal in condensed matter physics and materials science, as a route to advancing new physics and applicati…
Nearly-free electrons in a 5d delafossite oxide metal
Pallavi Kushwaha, Veronika Sunko, P. J. W. Moll +11
Understanding the role of electron correlations in strong spin-orbit transition-metal oxides is key to the realisation of numerous exotic phases including spin-orbit assisted Mott…
Strongly anisotropic spin-orbit splitting in a two-dimensional electron gas
Matteo Michiardi, Marco Bianchi, Maciej Dendzik +8
Near-surface two-dimensional electron gases on the topological insulator BiTeSe are induced by electron doping and studied by angle-resolved photoemission spectroscopy. A p…