286 citations · 1.3k across the 33 of their papers we have counts for
33 papers
Post-selected Criticality in Measurement-induced Phase Transitions
Dolly Nambi, Kabir Khanna, Andrew Allocca +4
Information-theoretic phase transitions, such as the measurement-induced phase transition (MIPT), characterize the robustness of quantum dynamics to local monitoring and are natura…
Two-dimensional coherent spectroscopy of CoNbO
Yoshito Watanabe, Simon Trebst, Ciarán Hickey
With recent advances in terahertz (THz) sources and detection, two-dimensional coherent spectroscopy (2DCS), which allows to probe nonlinear responses in a two-frequency plane, now…
Constructing Emergent U(1) Symmetries in the Gamma-prime model
Sagar Ramchandani, Simon Trebst, Ciarán Hickey
Frustrated magnets can elude the paradigm of conventional symmetry breaking and instead exhibit signatures of emergent symmetries at low temperatures. Such symmetries arise from "a…
Revealing Quadrupolar Excitations with Non-Linear Spectroscopy
Yoshito Watanabe, Simon Trebst, Ciarán Hickey
Local moments with a spin can exhibit a rich variety of elementary quasiparticle excitations, such as quadrupolar excitations, that go beyond the dipolar magnons of convent…
Disentangling spin excitation continua in classical and quantum magnets using 2D nonlinear spectroscopy
Emily Z. Zhang, Ciarán Hickey, Yong Baek Kim
Inelastic neutron scattering (INS) has traditionally been one of the primary methods for investigating quantum magnets, particularly in identifying a continuum of excitations as a…
Noncoplanar orders and quantum disordered states in maple-leaf (anti)ferromagnets
Martin Gembé, Lasse Gresista, Heinz-Jürgen Schmidt +3
A promising route towards the realization of chiral spin liquids is the quantum melting of classically noncoplanar spin states via quantum fluctuations. In the classical realm, suc…
Exploring Two-dimensional Coherent Spectroscopy with Exact Diagonalization: Spinons and Confinement in 1D Quantum Magnets
Yoshito Watanabe, Simon Trebst, Ciarán Hickey
Two-dimensional coherent spectroscopy (2DCS) with terahertz radiation offers a promising new avenue for the exploration of many-body phenomena in quantum magnets. This includes the…
Candidate quantum disordered intermediate phase in the Heisenberg antiferromagnet on the maple-leaf lattice
Lasse Gresista, Ciarán Hickey, Simon Trebst +1
Quantum antiferromagnets on geometrically frustrated lattices have long attracted interest for the formation of quantum disordered states and the possible emergence of quantum spin…
Elementary Building Blocks for Cluster Mott Insulators
Vaishnavi Jayakumar, Ciarán Hickey
Mott insulators, in which strong Coulomb interactions fully localize electrons on single atomic sites, play host to an incredibly rich and exciting array of strongly correlated phy…
Non-Coplanar Magnetic Orders in Classical Square-Kagome Antiferromagnets
Martin Gembé, Heinz-Jürgen Schmidt, Ciarán Hickey +3
Motivated by the recent synthesis of a number of Mott insulating square-kagome materials, we explore the rich phenomenology of frustrated magnetism induced by this lattice geometry…
RIXS observation of bond-directional nearest-neighbor excitations in the Kitaev material NaIrO
M. Magnaterra, K. Hopfer, Ch. J. Sahle +13
Spin-orbit coupling locks spin direction and spatial orientation and generates, in semi-classical magnets, a local spin easy-axis and associated ordering. Quantum spin-1/2's defy t…
Frustrated Ferromagnetism of Honeycomb Cobaltates: Incommensurate Spirals, Quantum Disordered Phases, and Out-of-Plane Ising Order
Yoshito Watanabe, Simon Trebst, Ciarán Hickey
Recent experiments on the Co-based honeycomb materials BaCo(AsO) and BaCo(PO) have drawn renewed interest to XXZ models with competing interactions be…
TMDs as a platform for spin liquid physics: A strong coupling study of twisted bilayer WSe
Dominik Kiese, Yuchi He, Ciarán Hickey +2
The advent of twisted moiré heterostructures as a playground for strongly correlated electron physics has led to a plethora of experimental and theoretical efforts seeking to unrav…
Generic Field-Driven Phenomena in Kitaev Spin Liquids: Canted Magnetism and Proximate Spin Liquid Physics
Ciarán Hickey, Matthias Gohlke, Christoph Berke +1
Topological spin liquids in two spatial dimensions are stable phases in the presence of a small magnetic field, but may give way to field-induced phenomena at intermediate field st…
Partial flux ordering and thermal Majorana metals in (higher-order) spin liquids
Tim Eschmann, Vatsal Dwivedi, Henry F. Legg +2
In frustrated quantum magnetism, chiral spin liquids are a particularly intriguing subset of quantum spin liquids in which the fractionalized parton degrees of freedom form a Chern…
Field stability of Majorana spin liquids in antiferromagnetic Kitaev models
Christoph Berke, Simon Trebst, Ciarán Hickey
Magnetic fields can give rise to a plethora of phenomena in Kitaev spin systems, such as the formation of non-trivial spin liquids in two and three spatial dimensions. For the orig…
Field-Driven Gapless Spin Liquid in the Spin-1 Kitaev Honeycomb Model
Ciarán Hickey, Christoph Berke, Panagiotis Peter Stavropoulos +2
Recent proposals for spin-1 Kitaev materials, such as honeycomb Ni oxides with heavy elements of Bi and Sb, have shown that these compounds naturally give rise to antiferromagnetic…
Half-integer quantized anomalous thermal Hall effect in the Kitaev material -RuCl
T. Yokoi, S. Ma, Y. Kasahara +9
Heat transport mediated by Majorana edge modes in a magnetic insulator leads to a half-integer thermal quantum Hall conductance, which has recently been reported for the two-dimens…
High-Field Quantum Disordered State in -RuCl3: Spin Flips, Bound States, and a Multi-Particle Continuum
A. Sahasrabudhe, D. A. S. Kaib, S. Reschke +15
Layered -RuCl3 has been discussed as a proximate Kitaev spin liquid compound. Raman and THz spectroscopy of magnetic excitations confirm that the low-temperature antiferromagnet…
Emergence and stability of spin-valley entangled quantum liquids in moiré heterostructures
Dominik Kiese, Finn Lasse Buessen, Ciarán Hickey +2
Twisting moiré heterostructures to the flatband regime allows for the formation of strongly correlated quantum states, since the dramatic reduction of the bandwidth can cause the r…
Fingerprints of Kitaev physics in the magnetic excitations of honeycomb iridates
A. Revelli, M. Moretti Sala, G. Monaco +11
In the quest for realizations of quantum spin liquids, the exploration of Kitaev materials - spin-orbit entangled Mott insulators with strong bond-directional exchanges - has taken…
Thermal Hall signatures of non-Kitaev spin liquids in honeycomb Kitaev materials
Yong Hao Gao, Ciarán Hickey, Tao Xiang +2
Motivated by the recent surge of field-driven phenomena discussed for Kitaev materials, in particular the experimental observation of a finite thermal Hall effect and theoretical p…
Quantum skyrmions in frustrated ferromagnets
Vivek Lohani, Ciarán Hickey, Jan Masell +1
We develop a quantum theory of magnetic skyrmions and antiskyrmions in a spin-1/2 Heisenberg magnet with frustrating next-nearest neighbor interactions. Using exact diagonalization…
Emergence of a Field-Driven U(1) Spin Liquid in the Kitaev Honeycomb Model
Ciarán Hickey, Simon Trebst
In the field of quantum magnetism, the exactly solvable Kitaev honeycomb model serves as a paradigm for the fractionalization of spin degrees of freedom and the formation of $\math…