479 citations · 1.8k across the 32 of their papers we have counts for
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RIXS interferometry and the role of disorder in the quantum magnet BaTiIrO
M. Magnaterra, M. Moretti Sala, G. Monaco +8
Motivated by several claims of spin-orbit driven spin-liquid physics in hexagonal BaTiIrO hosting Ir2O9 dimers, we report on resonant inelastic x-ray scattering…
Quasimolecular electronic structure of the spin-liquid candidate BaInIrO
A. Revelli, M. Moretti Sala, G. Monaco +16
The mixed-valent iridate Ba3InIr2O9 has been discussed as a promising candidate for quantum spin-liquid behavior. The compound exhibits Ir ions in face-sharing IrO6 octahe…
Spin-orbit coupling and crystal-field splitting in Ti-doped Ca2RuO4 studied by ellipsometry
I. Vergara, M. Magnaterra, J. Attig +5
In Ca2RuO4, the competition of spin-orbit coupling and tetragonal crystal field splitting has been discussed controversially for many years. The orbital occupation dep…
Thermodynamic classification of three-dimensional Kitaev spin liquids
Tim Eschmann, Petr A. Mishchenko, Kevin O'Brien +5
In the field of frustrated magnetism, Kitaev models provide a unique framework to study the phenomena of spin fractionalization and emergent lattice gauge theories in two and three…
Multiple Spin-Orbit Excitons and the Electronic Structure of -RuCl
P. Warzanowski, N. Borgwardt, K. Hopfer +7
The honeycomb compound -RuCl is widely discussed as a proximate Kitaev spin-liquid material. This scenario builds on spin-orbit entangled moments arising for a $t_…
Chiral spin liquids with crystalline gauge order in a three-dimensional Kitaev model
Petr A. Mishchenko, Yasuyuki Kato, Kevin O'Brien +5
Chiral spin liquids (CSLs) are time-reversal symmetry breaking ground states of frustrated quantum magnets that show no long-range magnetic ordering, but instead exhibit topologica…
Resonant inelastic x-ray incarnation of Young's double-slit experiment
A. Revelli, M. Moretti Sala, G. Monaco +12
Young's archetypal double-slit experiment forms the basis for modern diffraction techniques: the elastic scattering of waves yields an interference pattern that captures the real-s…
Thermodynamics of a gauge-frustrated Kitaev spin liquid
T. Eschmann, P. A. Mishchenko, T. A. Bojesen +4
Two- and three-dimensional Kitaev magnets are prototypical frustrated quantum spin systems, in which the original spin degrees of freedom fractionalize into Majorana fermions and a…
Spin-orbit entangled j=1/2 moments in BaCeIrO -- a frustrated fcc quantum magnet
A. Revelli, C. C. Loo, D. Kiese +16
We establish the double perovskite BaCeIrO as a nearly ideal model system for j=1/2 moments, with resonant inelastic x-ray scattering indicating a deviation of less than 1%…
Topological semimetals and insulators in three-dimensional honeycomb materials
Dennis Wawrzik, David Lindner, Maria Hermanns +1
Semimetals, in which conduction and valence bands touch but do not form Fermi surfaces, have attracted considerable interest for their anomalous properties starting with the discov…
Matrix product state representation of quasielectron wave functions
Jonas A. Kjäll, Eddy Ardonne, Vatsal Dwivedi +2
Matrix product state techniques provide a very efficient way to numerically evaluate certain classes of quantum Hall wave functions that can be written as correlators in two-dimens…
Conformal field theory construction for nonabelian hierarchy wave functions
Yoran Tournois, Maria Hermanns
The fractional quantum Hall effect is the paradigmatic example of topologically ordered phases. One of its most fascinating aspects is the large variety of different topological or…
Crystalline Kitaev spin liquids
Masahiko G. Yamada, Vatsal Dwivedi, Maria Hermanns
Frustrated magnetic systems exhibit many fascinating phases. Prime among them are quantum spin liquids, where the magnetic moments do not order even at zero temperature. A subclass…
Physics of the Kitaev model: fractionalization, dynamical correlations, and material connections
Maria Hermanns, Itamar Kimchi, Johannes Knolle
Quantum spin liquids have fascinated condensed matter physicists for decades because of their unusual properties such as spin fractionalization and long-range entanglement. Unlike…
Entanglement in topological systems
Maria Hermanns
These lecture notes on entanglement in topological systems are part of the 48th IFF Spring School 2017 on Topological Matter: Topological Insulators, Skyrmions and Majoranas at the…
Quantum Hall Physics - hierarchies and CFT techniques
T. H. Hansson, M. Hermanns, S. H. Simon +1
The fractional quantum Hall effect, being one of the most studied phenomena in condensed matter physics during the past thirty years, has generated many groundbreaking new ideas an…
Classification of gapless Z2 spin liquids in three-dimensional Kitaev models
Kevin O'Brien, Maria Hermanns, Simon Trebst
Frustrated quantum magnets can harbor unconventional spin liquid ground states in which the elementary magnetic moments fractionalize into new emergent degrees of freedom. While th…
Spin-Peierls Instability of Three-Dimensional Spin Liquids with Majorana Fermi Surfaces
Maria Hermanns, Simon Trebst, Achim Rosch
Three-dimensional (3D) variants of the Kitaev model can harbor gapless spin liquids with a Majorana Fermi surface on certain tricoordinated lattice structures such as the recently…
Weyl spin liquids
Maria Hermanns, Kevin O'Brien, Simon Trebst
The fractionalization of quantum numbers in interacting quantum-many body systems is a central motif in condensed matter physics with prominent examples including the fractionaliza…
Spin-orbit physics of j=1/2 Mott insulators on the triangular lattice
Michael Becker, Maria Hermanns, Bela Bauer +2
The Heisenberg-Kitaev (HK) model on the triangular lattice is conceptually interesting for its interplay of geometric and exchange frustration. HK models are also thought to captur…
Entanglement Spectrum and Entanglement Hamiltonian of a Chern insulator with open boundaries
Maria Hermanns, Yann Salimi, Masudul Haque +1
We study the entanglement spectrum of a Chern insulator on a cylinder geometry, with the cut separating the two partitions taken parallel to the cylinder edge, at varying distances…
Quantum spin liquid with a Majorana Fermi surface on the three-dimensional hyperoctagon lattice
M. Hermanns, S. Trebst
Motivated by the recent synthesis of -LiIrO -- a spin-orbit entangled Mott insulator with a three-dimensional lattice structure of the Ir ions -- we consi…
From Irrational to Non-Unitary: on the Haffnian and Haldane-Rezayi wave functions
Maria Hermanns, Nicolas Regnault, B. Andrei Bernevig +1
We study the Haffnian and Haldane-Rezayi quantum Hall wave functions and their quasihole excitations by means of their `root configurations', and point out a close connection betwe…