Neutron tomography of magnetic Majorana fermions in a proximate quantum spin liquid

  title={Neutron tomography of magnetic Majorana fermions in a proximate quantum spin liquid},
  author={Arnab Banerjee and Jiaqiang Yan and Johannes Knolle and Craig A. Bridges and Matthew B. Stone and Mark D. Lumsden and David G. Mandrus and David Alan Tennant and Roderich Moessner and Stephen E. Nagler},
Quantum matter provides an effective vacuum out of which arise emergent particles not corresponding to any experimentally detected elementary particle. Topological quantum materials in particular have become a focus of intense research in part because of the remarkable possibility to realize Majorana fermions, with their potential for new, decoherence-free quantum computing architectures. In this paper we undertake a study on high-quality single crystal of -RuCl3 which has been identified as a… 
High Temperature Fermi Statistics from Majorana Fermions in an Insulating Magnet
Majorana fermions, particles that are their own anti-particles, can emerge in insulating magnets as excitations with fractions of the constituent's quantum numbers. Interest in Majoranas is driven by
Physics of the Kitaev Model: Fractionalization, Dynamic Correlations, and Material Connections
Quantum spin liquids have fascinated condensed matter physicists for decades because of their unusual properties such as spin fractionalization and long-range entanglement. Unlike conventional
Direct Evidence for Fermi Statistics from Proximity to the Kitaev Spin Liquid in RuCl3
A key characteristic of quantum spin liquids(QSL) is the presence of fractional excitations related to their entanglement properties, yet experimental verification of their statistics is missing. For
Magnetic Excitations and Continuum of a Possibly Field-Induced Quantum Spin Liquid in α-RuCl_{3}.
Terahertz spectroscopy of quantum spin dynamics in α-RuCl_{3], a system proximate to the Kitaev honeycomb model, as a function of temperature and magnetic field is reported, characterizing the dynamical properties of a possibly field-induced quantum spin liquid.
Spin-orbit-coupled triangular-lattice spin liquid in rare-earth chalcogenides
Spin-orbit coupling is an important ingredient in many spin liquid candidate materials, especially among the rare-earth magnets and Kitaev materials. We explore the rare-earth chalcogenides NaYbS$_2$
Hierarchy of Exchange Interactions in the Triangular-Lattice Spin Liquid YbMgGaO4
The spin-1/2 triangular lattice antiferromagnet YbMgGaO$_{4}$ has attracted recent attention as a quantum spin-liquid candidate with the possible presence of off-diagonal anisotropic exchange
Atomic-scale observation of structural and electronic orders in the layered compound α-RuCl3
A comprehensive, atomically resolved real-space study by scanning transmission electron and scanning tunnelling microscopies on a novel layered material displaying Kitaev physics, α-RuCl3, revealing considerable variations in the geometry of the ligand sublattice in thin films of α- RuCl3 that opens a way to realization of a spatially inhomogeneous magnetic ground state at the nanometre length scale.
Kitaev materials
In transition-metal compounds with partially filled $4d$ and $5d$ shells spin-orbit entanglement, electronic correlations, and crystal-field effects conspire to give rise to a variety of novel forms
Relation between Kitaev magnetism and structure in alpha-RuCl3
Raman scattering has been employed to investigate lattice and magnetic excitations of the honeycomb Kitaev material $\alpha$-RuCl$_3$ and its Heisenberg counterpart CrCl$_3$. Our phonon Raman spectra
Magnetism study on a triangular lattice antiferromagnet Cu2(OH)3Br.
The individual reorientation of the inequivalent Cu2+ spins under field is proposed to account for the magnetization behavior and the temperature dependence of the magnetic specific heat, which is well described by a sum of two gapped AFM contributions, is a further support for the proposed scenario.