443 citations · 1.9k across the 30 of their papers we have counts for
30 papers
Geometric Stiffness in Interlayer Exciton Condensates
Nishchhal Verma, Daniele Guerci, Raquel Queiroz
Recent experiments have confirmed the presence of interlayer excitons in the ground state of transition metal dichalcogenide (TMD) bilayers. The interlayer excitons are expected to…
The quantum geometric origin of capacitance in insulators
Ilia Komissarov, Tobias Holder, Raquel Queiroz
In band insulators, where the Fermi surface is absent, adiabatic transport is allowed only due to the geometry of the Hilbert space. By driving the system at a small but finite fre…
Anderson Critical Metal Phase in Trivial States Protected by Average Magnetic Crystalline Symmetry
Fa-Jie Wang, Zhen-Yu Xiao, Raquel Queiroz +3
Transitions between distinct obstructed atomic insulators (OAIs) protected by crystalline symmetries, where electrons form molecular orbitals centering away from the atom positions…
Chiral limit and origin of topological flat bands in twisted transition metal dichalcogenide homobilayers
Valentin Crépel, Nicolas Regnault, Raquel Queiroz
The observation of zero field fractional quantum Hall analogs in twisted transition metal dichalcogenides (TMDs) asks for a deeper understanding of what mechanisms lead to topologi…
Infrared Plasmons Propagate through a Hyperbolic Nodal Metal
Yinming Shao, Aaron J. Sternbach, Brian S. Y. Kim +16
Metals are canonical plasmonic media at infrared and optical wavelengths, allowing one to guide and manipulate light at the nano-scale. A special form of optical waveguiding is aff…
Symmetries as the guiding principle for flattening bands of Dirac fermions
Yarden Sheffer, Raquel Queiroz, Ady Stern
Since the discovery of magic-angle twisted bilayer graphene (TBG), flat bands in Dirac materials have become a prominent platform for realizing strong correlation effects in electr…
A Class of Magnetic Topological Material Candidates with Hypervalent Bi Chains
Jason F. Khoury, Bingzheng Han, Milena Jovanovic +5
The link between crystal and electronic structure is crucial for understanding structure-property relations in solid-state chemistry. In particular, it has been instrumental in und…
Confined vs. extended Dirac surface states in topological crystalline insulator nanowires
Roni Majlin Skiff, Fernando de Juan, Raquel Queiroz +3
Confining two dimensional Dirac fermions on the surface of topological insulators has remained an outstanding conceptual challenge. Here we show that Dirac fermion confinement is a…
Delocalization Transition of Disordered Axion Insulator
Zhi-Da Song, Biao Lian, Raquel Queiroz +3
The axion insulator is a higher-order topological insulator protected by inversion symmetry. We show that under quenched disorder respecting inversion symmetry {\it on average}, th…
Quasiparticle interference observation of the topologically non-trivial drumhead surface state in ZrSiTe
B. A. Stuart, Seokhwan Choi, Jisun Kim +6
Drumhead surface states that link together loops of nodal lines arise in Dirac nodal-line semimetals as a consequence of the topologically non-trivial band crossings. We used low-t…
Pseudo field effects in type II Weyl semimetals: new probes for over tilted cones
Daniel Sabsovich, Tobias Meng, Dmitry I. Pikulin +2
We study the effects of pseudo-magnetic fields on Weyl semimetals with over-tilted Weyl cones, or type II cones. We compare the phenomenology of the resulting pseudo-Landau levels…
A search for correlation-induced adiabatic paths between distinct topological insulators
Johannes S. Hofmann, Fakher F. Assaad, Raquel Queiroz +1
Correlations in topological states of matter provide a rich phenomenology, including a reduction in the topological classification of the interacting system compared to its non-int…
Cascade of Phase Transitions and Dirac Revivals in Magic Angle Graphene
Uri Zondiner, Asaf Rozen, Daniel Rodan-Legrain +10
Twisted bilayer graphene near the magic angle exhibits remarkably rich electron correlation physics, displaying insulating, magnetic, and superconducting phases. Here, using measur…
Experimental characterization of fragile topology in an acoustic metamaterial
Valerio Peri, Zhi-Da Song, Marc Serra-Garcia +7
Symmetries crucially underlie the classification of topological phases of matter. Most materials, both natural as well as architectured, possess crystalline symmetries. Recent theo…
Modular Arithmetic with Nodal Lines: Drumhead Surface States in ZrSiTe
Lukas Muechler, Andreas Topp, Raquel Queiroz +5
We study the electronic structure of the nodal line semimetal ZrSiTe both experimentally and theoretically. We find two different surface states in ZrSiTe - topological drumhead su…
Boundary-obstructed topological phases
Eslam Khalaf, Wladimir A. Benalcazar, Taylor L. Hughes +1
Symmetry protected topological (SPT) phases are gapped phases of matter that cannot be deformed to a trivial phase without breaking the symmetry or closing the bulk gap. Here, we i…
Visualizing Poiseuille flow of hydrodynamic electrons
Joseph A. Sulpizio, Lior Ella, Asaf Rozen +12
Hydrodynamics is a general description for the flow of a fluid, and is expected to hold even for fundamental particles such as electrons when inter-particle interactions dominate.…
Unified description of the classical Hall viscosity
Tobias Holder, Raquel Queiroz, Ady Stern
In absence of time-reversal symmetry, viscous electron flow hosts a number of interesting phenomena, of which we focus here on the Hall viscosity. Taking a step beyond the hydrodyn…
Resolving the Topological Classification of Bismuth with Topological Defects
Abhay Kumar Nayak, Jonathan Reiner, Raquel Queiroz +6
Bulk boundary correspondence in topological materials allows to study their bulk topology through the investigation of their topological boundary modes. However, for classes that s…
Ballistic and hydrodynamic magnetotransport in narrow channels
Tobias Holder, Raquel Queiroz, Thomas Scaffidi +6
An increasing number of low carrier density materials exhibit a surprisingly large transport mean free path due to inefficient momentum relaxation. Consequently, charge transport i…
Partial lattice defects in higher order topological insulators
Raquel Queiroz, Ion Cosma Fulga, Nurit Avraham +2
Nonzero weak topological indices are thought to be a necessary condition to bind a single helical mode to lattice dislocations. In this work we show that higher-order topological i…
Splitting the hinge mode of higher-order topological insulators
Raquel Queiroz, Ady Stern
The surface of a higher order topological insulator (HOTI) comprises a two-dimensional topological insulator (TI) with broken inversion symmetry, whose mass is determined by the mi…
Selection rules for quasiparticle interference with internal nonsymmorphic symmetries
Raquel Queiroz, Ady Stern
We study how nonsymmorphic symmetries that commute with lattice translations are reflected in the quasiparticle interference (QPI) maps measured by scanning tunneling microscopy (S…
Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds
Andreas Topp, Raquel Queiroz, Andreas Grüneis +10
In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed in the band stru…