322 citations · 3.6k across the 81 of their papers we have counts for
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Eight-color chiral spin liquid in the bilinear-biquadratic model with Kitaev interactions
Rico Pohle, Nic Shannon, Yukitoshi Motome
Multipolar spin systems provide a rich ground for the emergence of unexpected states of matter due to their enlarged spin degree of freedom. In this study, with a specific emphasis…
Human-machine collaboration: ordering mechanism of rank-2 spin liquid on breathing pyrochlore lattice
Nicolas Sadoune, Ke Liu, Han Yan +3
Machine learning algorithms thrive on large data sets of good quality. Here we show that they can also excel in a typical research setting with little data of limited quality, thro…
Gravitational wave analogues in spin nematics and cold atoms
Leilee Chojnacki, Rico Pohle, Han Yan +2
Many large-scale phenomena in our Universe, such as gravitational waves, are challenging to reproduce in laboratory settings. However, parallels with condensed matter systems can p…
Pinch points and half moons encode Berry curvature
Han Yan, Judit Romhányi, Andreas Thomasen +1
"Half moons", distinctive crescent patterns in the dynamical structure factor, have been identified in inelastic neutron scattering experiments for a wide range of frustrated magne…
Spin Nematics Meet Spin Liquids: Exotic Quantum Phases in the Spin- Bilinear-Biquadratic Model with Kitaev Interactions
Rico Pohle, Nic Shannon, Yukitoshi Motome
Spin liquid crystals are magnetic analogs of liquid crystals, possessing properties of both liquids and solids, a typical example of which are spin nematics. Spin nematics share ma…
Semi-classical simulation of spin-1 magnets
Kimberly Remund, Rico Pohle, Yutaka Akagi +2
Theoretical studies of magnets have traditionally concentrated on either classical spins, or the extreme quantum limit of spin-1/2. However, magnets built of spin-1 moments are als…
Dynamical scaling as a signature of multiple phase competition in YbTiO
Allen Scheie, Owen Benton, Mathieu Taillefumier +5
is a celebrated example of a pyrochlore magnet with highly-frustrated, anisotropic exchange interactions. To date, attention has largely focused on its unusual, s…
Observing Magnetic Monopoles in Spin Ice using Electron Holography
Ankur Dhar, Ludovic D. C. Jaubert, Cathal Cassidy +2
While there is compelling evidence for the existence of magnetic monopoles in spin ice, the direct observation of a point-like source of magnetic field in these systems remains an…
Hidden phases born of a quantum spin liquid: Application to pyrochlore spin ice
Hyeok-Jun Yang, Nic Shannon, SungBin Lee
Quantum spin liquids (QSL) have generated considerable excitement as phases of matter with emergent gauge structures and fractionalized excitations. In this context, phase transiti…
Theory of CaCrO as a bilayer breathing-kagome magnet: Classical thermodynamics and semi-classical dynamics
Rico Pohle, Han Yan, Nic Shannon
CaCrO is a novel spin- magnet exhibiting spin liquid behaviour which sets it apart from any previously studied model or material. However, understanding Ca$_…
Fragility of topological invariant characterizing triplet excitations in a bilayer kagome magnet
Andreas Thomasen, Karlo Penc, Nic Shannon +1
The discovery by Kane and Mele of a model of spinful electrons characterized by a topological invariant had a lasting effect on the study of electronic band structu…
Neutron scattering signatures of a quantum spin ice
Romain Sibille, Nicolas Gauthier, Han Yan +8
Quantum spin ice is an appealing proposal of a quantum spin liquid - systems where the magnetic moments of the constituent electron spins evade classical long-range order to form a…
Identification of hidden order and emergent constraints in frustrated magnets using tensorial kernel methods
Jonas Greitemann, Ke Liu, Ludovic D. C. Jaubert +3
Machine-learning techniques have proved successful in identifying ordered phases of matter. However, it remains an open question how far they can contribute to the understanding of…
Rank-2 spin liquid on the breathing pyrochlore lattice
Han Yan, Owen Benton, Ludovic D. C. Jaubert +1
Higher-rank generalisations of electrodynamics have recently attracted considerable attention because of their ability to host "fracton" excitations, with connections to both quant…
Negative thermal expansion in the plateau state of a magnetically-frustrated spinel
L. Rossi, A. Bobel, S. Wiedmann +6
We report on negative thermal expansion (NTE) in the high-field, half-magnetization plateau phase of the frustrated magnetic insulator CdCr2O4. Using dilatometry, we precisely map…
Half moons are pinch points with dispersion
Han Yan, Rico Pohle, Nic Shannon
"Pinch points," singular features observed in (quasi-)elastic neutron scattering, are a widely discussed hallmark of spin liquids with an emergent gauge symmetry. Much less attenti…
Quantum spin ice with frustrated transverse exchange: from pi-flux phase to nematic quantum spin liquid
Owen Benton, L. D. C. Jaubert, Rajiv Singh +2
Quantum spin ice materials, pyrochlore magnets with competing Ising and transverse exchange interactions, have been widely discussed as candidates for a quantum spin-liquid ground…
How many spin liquids are there in CaCrO?
Rico Pohle, Han Yan, Nic Shannon
The search for novel phases of matter is a central theme of modern physics, with some of the most intriguing examples provided by the spin liquids found in magnets with competing,…
Experimental signatures of emergent quantum electrodynamics in PrHfO
Romain Sibille, Nicolas Gauthier, Han Yan +8
In a quantum spin liquid, the magnetic moments of the constituent electron spins evade classical long-range order to form an exotic state that is quantum entangled and coherent ove…
Competing spin liquids and hidden nematic order in spin ice with frustrated transverse exchange
Mathieu Taillefumier, Owen Benton, Han Yan +2
Frustration in magnetic interactions can give rise to disordered ground states with subtle and beautiful properties. The spin ices Ho2Ti2O7 and Dy2Ti2O7 exemplify this phenomenon,…
Theory of multiple--phase competition in pyrochlore magnets with anisotropic exchange, with application to Yb2Ti2O7, Er2Ti2O7 and Er2Sn2O7
Han Yan, Owen Benton, Ludovic D. C. Jaubert +1
The family of magnetic rare-earth pyrochlore oxides R2M2O7 plays host to a diverse array of exotic phenomena, driven by the interplay between geometrical frustration and spin-orbit…
Quantum solitons with emergent interactions in a model of cold atoms on the triangular lattice
Hiroaki T. Ueda, Yutaka Akagi, Nic Shannon
Cold atoms bring new opportunities to study quantum magnetism, and in particular, to simulate quantum magnets with symmetry greater than . Here we explore the topological ex…
A spin liquid with pinch-line singularities on the pyrochlore lattice
Owen Benton, Ludovic D. C. Jaubert, Han Yan +1
The mathematics of gauge theories lies behind many of the most profound advances in physics in the last 200 years, from Maxwell's theory of electromagnetism to Einstein's theory of…
Novel phases in a square-lattice frustrated ferromagnet : 1/3-magnetisation plateau, helicoidal spin-liquid and vortex crystal
Luis Seabra, Philippe Sindzingre, Tsutomu Momoi +1
A large part of the interest in magnets with frustrated antiferromagnetic interactions comes from the many new phases found in applied magnetic field. In this Article, we explore s…