153 citations · 341 across the 18 of their papers we have counts for
18 papers
Change in charge density wave order beyond the Lifshitz transition in 2H-Ta\textsubscript{1}S\textsubscript{2}
Mihir Date, Jan Berges, Enrico Da Como +6
We investigate electronic instabilities in 2H-TaS\textsubscript{2} and a self-intercalated variant, 2H-Ta\textsubscript{1+}S\textsubscript{2}. In conventional samples,…
Quantifying quasiparticle chirality in a chiral topological semimetal
Jiaju Wang, Jaime Sánchez-Barriga, Amit Kumar +17
Recently, the projection of the electron's spin on its crystal momentum has been proposed as a metric to quantify electronic chirality of Bloch states in crystals, which is expecte…
Suppression of Spectral Gap and Flat Bands on a Cuprate Superconductor Side-Surface
Gabriele Domaine, Mihir Date, Sydney K. Y. Dufresne +27
Side surfaces of cuprate superconductors are expected to display a suppressed -wave order parameter and zero-energy topological flat bands with a large density of states, making…
Charge transfer empties the flat band in 4H-TaS -- except at the surface
Mihir Date, Hyeonhu Bae, Alex Louat +5
The 4H\textsubscript{b} polytype of TaS is a natural heterostructure of H and T-type layers. Intriguing recent evidence points towards a possibly chiral superconducting ground…
Discovery of an Antiferromagnetic Topological Nodal-line Kondo Semimetal
D. F. Liu, Y. F. Xu, H. Y. Hu +34
The symbiosis of strong interactions, flat bands, topology and symmetry has led to the discovery of exotic phases of matter, including fractional Chern insulators, correlated moiré…
Novel electronic structures from anomalous stackings in NbS and MoS
Matthew D. Watson, Mihir Date, Alex Louat +1
We show that in some transition metal dichalcogenides, minority regions of the cleaved sample surfaces show - unexpectedly and anomalously - a finite number of 2D electronic states…
Multifold topological semimetals
Iñigo Robredo, Niels Schröeter, Claudia Felser +3
The discovery of topological semimetals with multifold band crossings has opened up a new and exciting frontier in the field of topological physics. These materials exhibit large C…
Parallel spin-momentum locking in a chiral topological semimetal
Jonas A. Krieger, Samuel Stolz, Inigo Robredo +23
Spin-momentum locking in solids describes a directional relationship between the electron's spin angular momentum and its linear momentum over the entire Fermi surface. While ortho…
Hydrogen-impurity induced unconventional magnetism in semiconducting molybdenum ditelluride
Jonas A. Krieger, Daniel Tay, Igor P. Rusinov +13
Layered transition-metal dichalcogenides are proposed as building blocks for van der Waals (vdW) heterostructures due to their graphene-like two dimensional structure. For this pur…
Spin-momentum locking from topological quantum chemistry: applications to multifold fermions
Mao Lin, Iñigo Robredo, Niels B. M. Schröter +3
In spin-orbit coupled crystals, symmetries can protect multifold degeneracies with large Chern numbers and Brillouin zone spanning topological surface states. In this work, we expl…
Probing the interlayer coupling in 2-NbS via soft x-ray angle-resolved photoemission spectroscopy
D. Huang, H. Nakamura, K. Küster +5
In the large family of two-dimensional (2D) layered materials including graphene, its honeycomb analogs, and transition-metal dichalcogenides, the interlayer coupling plays a rathe…
Josephson diode effect from Cooper pair momentum in a topological semimetal
Banabir Pal1, Anirban Chakraborty, Pranava K. Sivakumar +11
In the presence of an external magnetic field Cooper pairs in noncentrosymmetric superconductors can acquire finite momentum. Recent theory predicts that such finite-momentum pairi…
What's knot to like? Observation of a linked loop quantum state
Ilya Belopolski, Guoqing Chang, Tyler A. Cochran +22
Quantum phases can be classified by topological invariants, which take on discrete values capturing global information about the quantum state. Over the past decades, these invaria…
Theoretical study of topological properties of ferromagnetic pyrite CoS
Iñigo Robredo, Niels B. M. Schröter, Armando Reyes-Serrato +4
Since the discovery of the first topological material 15 years ago, the search for material realizations of novel topological phases has become the driving force of the field. Whil…
Direct observation of handedness-dependent quasiparticle interference in the two enantiomers of topological chiral semimetal PdGa
Paolo Sessi, Feng-Ren Fan, Felix Küster +16
It has recently been proposed that combining chirality with topological band theory may result in a totally new class of fermions. These particles have distinct properties: they ap…
Unusual Valence State in the Antiperovskites SrSnO and SrPbO Revealed by X-ray Photoelectron Spectroscopy
D. Huang, H. Nakamura, K. Küster +6
The class of antiperovskite compounds O ( = Ca, Sr, Ba; = Sn, Pb) has attracted interest as a candidate 3D Dirac system with topological surface states protected by cr…
Observation and control of maximal Chern numbers in a chiral topological semimetal
Niels B. M. Schröter, Samuel Stolz, Kaustuv Manna +13
Topological semimetals feature protected nodal band degeneracies characterized by a topological invariant known as the Chern number (C). Nodal band crossings with linear dispersion…
k-Resolved electronic structure of buried heterostructure and impurity systems by soft-X-ray ARPES
V. N. Strocov, L. L. Lev, M. Kobayashi +7
Angle-resolved photoelectron spectroscopy (ARPES) is the main experimental tool to explore electronic structure of solids resolved in the electron momentum k . Soft-X-ray ARPES (SX…