Rucl3 Spin Liquid

08.03.2022

Phys. Rev. B 100, 134419 (2019) - Polarization-resolved Raman.
Magneto-optical study of metamagnetic transitions in the.
"Raman Spectroscopy and Electronic Transport in Exfoliated α-RuCl3 and.
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(PDF) Quantum Spin Liquid Dual Nature | George Rajna.
Mysterious New State of Matter - Quantum Spin Liquids - Could Enable.
Spin-phonon interactions in Quantum Spin Liquid Candidate α-RuCl3.
Neutron scattering in the proximate quantum spin liquid -RuCl a 4 a 2,5 6.
Electronic Structure of the Kitaev Material α-RuCl 3 Probed by.
Polarization-resolved Raman spectroscopy of \alpha-RuCl3 and... - NIST.
(PDF) Quantum Spin Liquid Spectroscopy | George Rajna - A.
Identification of magnetic interactions and high... - Nature.
Experimental evidence of quantum spin liquid | ANSTO.
Field-induced intermediate phase in $α$-RuCl$_3$: Non.

Phys. Rev. B 100, 134419 (2019) - Polarization-resolved Raman.

What is the correct low-energy spin Hamiltonian describing α-RuCl 3? This material is a promising Kitaev spin-liquid candidate but is also known to order magnetically at low temperatures because of the competing interactions. The nature of these interactions, their magnitudes and even signs, remain an open question. Using numerical. Possible Kitaev spin liquid physics and topological transitions in a-RuCl 3. 2 SEN CNLS 2019 Outline I. Kitaev'smodel • Quick reminder of possible relevance to materials • Basics of a-RuCl 3... N 7 K the spin waves disappear throughout the Brillouin zone • Above T N the continuum near the Gpoint persists. 21 SEN CNLS 2019. The researchers tested the magnetic properties of the RuCl3 crystals by illuminating them with neutrons, and observing the pattern of ripples that the neutrons produced on a screen. "This is a new addition to a short list of known quantum states of matter," said Knolle.... Quantum Spin Liquid Spectroscopy In modern physics of the past century.

Magneto-optical study of metamagnetic transitions in the.

A quantum spin liquid is an exotic quantum state of matter that does not exhibit any classical magnetic ordered ground state. The realization of such a state in actual materials is of significant importance as it would provide a path to protected states for quantum information applications and also to Majorana fermions - both areas of vigorous current activity and interest in condensed matter.

"Raman Spectroscopy and Electronic Transport in Exfoliated α-RuCl3 and.

Α -RuCl 3 is a promising candidate material to realize the so far elusive quantum spin liquid ground state. However, at low temperatures, the coexistence of different exchange interactions couple. The main aim of this review is to summarize experimental evidence obtained by THz spectroscopy and utilizing heat-capacity experiments, which point to the existence of fractionalized excitations in the spin-liquid state, which in -RuCl3 exists at temperatures just above the onset of magnetic order or at in-plane magnetic fields just beyond the.

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Oct 22, 2020 · The insulating quantum magnet a-RuCl3 is the closest known proximate to the Kitaev hexagonal model. Below 7 K, it orders as an antiferromagnet with a zig-zag motif. Application of an in-plane magnetic field B||a destroys the magnetic order at 7.3 T. In the field interval 7.3 to 11.5 Tesla, neutron scattering results strongly suggest a quantum. REPORT QUANTUM MAGNETISM Neutron scattering in the proximate quantum spin liquid a-RuCl 3 Arnab Banerjee,1* Jiaqiang Yan,2 Johannes Knolle,3 Craig A. Bridges,4 Matthew B. Stone, 1Mark D. Lumsden, David G. Mandrus,2,5 David A. Tennant,6 Roderich Moessner,7 Stephen E. Nagler1* The Kitaev quantum spin liquid (KQSL) is an exotic emergent state of matter exhibiting.

(PDF) Quantum Spin Liquid Dual Nature | George Rajna.

Oscillations of the thermal conductivity in the spin-liquid phase of the honeycomb magnet a-RuCl3. The quantum spin-liquid (QSL) state is currently of intense interest because it exhibits novel excitations as well as wave-function entanglement. The layered insulator RuCl3 orders as a zigzag antiferromagnet below 7 K in zero magnetic field. Scientists have focused attention and research on the so-called Kitaev-type of spin liquid, named in honor of the Russian scientist, Alexei Kitaev, who first proposed it. In particular, they have looked extensively at two materials - RuCl3 and Na2IrO - as candidates for this type. Both have small quantum spin numbers.

Mysterious New State of Matter - Quantum Spin Liquids - Could Enable.

Abstract The layered honeycomb lattice material α-RuCl 3 has emerged as a prime candidate for displaying the Kitaev quantum spin liquid state, and as such has attracted much research interest. Here a new layered honeycomb lattice polymorph of RuI 3, a material that is strongly chemically and structurally related to α-RuCl 3 is described.

Spin-phonon interactions in Quantum Spin Liquid Candidate α-RuCl3.

These exchange interactions were critical to fit the data which left an almost negligible isotropic Heisenberg exchange coupling in α-RuCl3. Quantum spin liquid. When you cool down a conventional magnet, the magnetic spins will eventually freeze into an ordered state, where each of the spins align with each other.

Neutron scattering in the proximate quantum spin liquid -RuCl a 4 a 2,5 6.

Apr 04, 2016 · Inelastic neutron scattering characterization shows that α-RuCl3 is close to an experimental realization of a Kitaev quantum spin liquid on a honeycomb lattice. The collective excitations provide. Nov 10, 2020 · Spin-orbit excitations and electronic structure of the putative Kitaev magnet α-RuCl3. March 6, 2016. March 6, 2016. Kenneth Burch Crystal Electric Field, Infrared Spectroscopy, Orbital, Raman, RuCl3, Spin-Orbit. Mott insulators with strong spin-orbit coupling have been proposed to host unconventional magnetic states, including the Kitaev. Jun 09, 2017 · The Kitaev quantum spin liquid (KQSL) is an exotic emergent state of matter exhibiting Majorana fermion and gauge flux excitations. The magnetic insulator α-RuCl 3 is thought to realize a proximate KQSL. We used neutron scattering on single crystals of α-RuCl 3 to reconstruct dynamical correlations in energy-momentum space.

Electronic Structure of the Kitaev Material α-RuCl 3 Probed by.

Abstract We report a 35Cl nuclear magnetic resonance study in the honeycomb lattice α - RuCl3, a material that has been suggested to potentially realize a Kitaev quantum spin liquid (QSL) ground state. Our results provide direct evidence that α - RuCl3 exhibits a magnetic-field-induced QSL. The material -RuCl has been the subject of intense scrutiny as a potential Kitaev quantum spin liquid, predicted to display Majorana fermions as low energy excitations. In practice, -RuCl undergoes a transition to a state with antiferromagnetic order below a temperature 7 K, but this order can be suppressed by applying an external in-plane. Aug 27, 2021 · The ground state in frustrated spin systems either can be a spin liquid or a dynamically disordered quantum state. However, as experimentally observed in the vast majority of cases, the ground state represents some non-generic magnetic order, driven by residual non-leading magnetic interactions.

Polarization-resolved Raman spectroscopy of \alpha-RuCl3 and... - NIST.

This antiferromagnetic material closely resembles the ideal Kitaev honeycomb model for a spin liquid, and undergoes a transition to a spin liquid at a temperature of 0.5 K in the presence of a strong magnetic field (between 7 and 11.5 Tesla). This is the field interval over which the spin liquid state is stable, Ong explains. Our results uncover that 2D α-RuCl3 could harbour the unusual magnetic continuum, serving as a hallmark of the 2D proximate quantum spin liquid state and frustrated magnetic interactions. More importantly, our work demonstrates that the unusual magnetic scattering, as compared with bulk, is more obvious in 2D α-RuCl3, indicating that the.

(PDF) Quantum Spin Liquid Spectroscopy | George Rajna - A.

Recently, α-RuCl 3 has attracted much attention as a possible material to realize the honeycomb Kitaev model of a quantum-spin-liquid state. Although the magnetic properties of α-RuCl 3 have been extensively studied, its electronic structure, which is strongly related to its Kitaev physics, is poorly understood. Here, the electronic structure of α-RuCl 3 was investigated by photoemission. Significant efforts have focused on the magnetic excitations of relativistic Mott insulators, predicted to realize the Kitaev quantum spin liquid (QSL). This exactly solvable model involves a highly entangled state resulting from bond-dependent Ising interactions that produce excitations which are non-local in terms of spin flips. A key challenge in real materials is identifying the relative.

Identification of magnetic interactions and high... - Nature.

Polarization-resolved Raman spectroscopy was performed and analyzed from large, high quality, mono-domain single crystal of \alpha-RuCl3, a proximate Kitaev quantum spin liquid. Spectra were collected with laser polarizations parallel and perpendicular to the honeycomb plane. Layered α -RuCl3 has been discussed as a proximate Kitaev spin liquid compound. Raman and THz spectroscopy of magnetic excitations confirm that the low-temperature antiferromagnetic ordered phase features a broad Raman continuum, together with two magnon-like excitations at 2.7 and 3.6 meV, respectively. The continuum strength is maximized as long-range order is suppressed by an external. Frustrated magnets with strong spin-orbit coupling promise to host topological states of matter, with fractionalized excitations and emergent gauge fields. Kitaev's proposal for a honeycomb-lattice Majorana spin liquid has triggered an intense search for experimental realizations, with bond-dependent Ising interaction being the essential building block. A prime candidate is $α$-RuCl$_3$ whose.

Experimental evidence of quantum spin liquid | ANSTO.

The half-integer quantized thermal Hall conductance with positive sign followed by the rapid reduction at high field is observed at θ = -60°, as reported previously. The half-integer quantized thermal Hall conductance is also observed at θ = +60°, but, strikingly, its sign is negative in the spin-liquid state. In 2006 Alexei Kitaev put forth an exactly solvable model of S=1/2 spins on a honeycomb lattice [1]. The ground state of this model is a quantum spin liquid (QSL) exhibiting Majorana fermion excitations. Subsequently Jackeli and Khaliullin showed how the Kitaev Hamiltonian might actually be realized in the laboratory [2]. This stimulated a great deal of experimental activity, initially on. In condensed matter physics, a quantum spin liquid is a phase of matter that can be formed by interacting quantum spins in certain magnetic materials. Quantum spin liquids (QSL) are generally characterized by their long-range quantum entanglement, fractionalized excitations, and absence of ordinary magnetic order.. The quantum spin liquid state was first proposed by physicist Phil Anderson in.

Field-induced intermediate phase in $α$-RuCl$_3$: Non.

Jul 21, 2017 · We report a ^{35}Cl nuclear magnetic resonance study in the honeycomb lattice α-RuCl_{3}, a material that has been suggested to potentially realize a Kitaev quantum spin liquid (QSL) ground state. Our results provide direct evidence that α-RuCl_{3} exhibits a magnetic-field-induced QSL. For fields l. Theoretical concepts of spin-liquid phases are numer-ous and in most cases rather complex. However, from an experimental point of view, the identification of strong frustration effects in magnetic systems is straightforward and a much easier task. Systems with localized magnetic moments with spin S coupled by finite effective exchange.