Quantum Spin Ice - BLACKJACKINNOVATION.NETLIFY.APP

Quantum Spin-Ice and Dimer Models with Rydberg Atoms.
PDF Quantum and thermal spin relaxation in the diluted spin ice Dy M Ti O M.
The fine structure of quantum spin ice | Joint Quantum Institute.
Dynamics of Topological Excitations in a Model Quantum Spin Ice.
Temperature and magnetic ﬁeld dependence of spin-ice... - NIST.
Quantum percolation of monopole paths and the response of quantum spin ice.
The Frustrated Matter of Quantum Spin Liquids | NIST.
Synthesis, floating zone crystal growth and... - ScienceDirect.
Quantum spin liquid theory for quantum spin ice.
Planar Pyrochlore, Quantum Ice and Sliding Ice - Semantic Scholar.
The spectral periodicity of spinon continuum in quantum spin ice.
Phys. Rev. Lett. 108, 067204 (2012) - Quantum Ice: A Quantum.
Vindication of Yb2Ti2O7 as a model exchange quantum spin ice.

Quantum Spin-Ice and Dimer Models with Rydberg Atoms.

For the Coulomb phase of spin ice, we find quantum effects to be most visible in the gauge-charged monopole excitations. In the presence of weak dilution with nonmagnetic ions we find a particularly crisp phenomenon, namely, the emergence of hydrogenic excited states in which a magnetic monopole is bound to a vacancy at various distances.. Abstract: Quantum spin liquids are low temperature phases of magnetic materials in which quantum fluctuations prevent the establishment of long-range magnetic order. These phases support fractionalized spin excitations (spinons) coupled to emergent photons. In this talk, I will review the basic picture of how quantum electrodynamics emerges in 3D spin ice and then turn to several results. One of the most intriguing features of the U(1) quantum spin liquid state on the phase diagram of quantum spin ice materials is the predicted existence of gapless, linearly dispersing, emergent photons as excitations of this state. For exchange parameters falling within the quantum spin liquid regime, one can describe the low temperature.

PDF Quantum and thermal spin relaxation in the diluted spin ice Dy M Ti O M.

We consider possible exotic ground states of quantum spin ice as realized in rare earth pyrochlores. Prior work [Savary and Balents, Phys. Rev. Lett. 108, 037202.

The fine structure of quantum spin ice | Joint Quantum Institute.

Dynamics of Topological Excitations in a Model Quantum Spin Ice.

Quantum spin ice is a spin liquid which realizes an emergent quantum electrodynamics with tunable values of couplings like the speed of light and fine-structure constant. Using large-scale quantum Monte Carlo simulations, we show that these tunable couplings have direct consequences in experimental observables such as the static and dynamic.

Temperature and magnetic ﬁeld dependence of spin-ice... - NIST.

May 02, 2018 · Quantum spin ice in particular is part of a larger class of magnetic phases, or ground states, called “quantum spin liquids.” Spin ice is a magnetic substance that doesn’t exhibit conventional magnetism, as seen in traditional bar magnets with north and south poles where the electrons align in parallel. As the temperature rises to the classical spin ice regime, the photon disappears from the dynamic spin structure factor, whereas the dynamics of the spinon remain coherent in a broad temperature window. Our results provide experimentally relevant, quantitative information for the ongoing pursuit of quantum spin ice materials. We implemented a two-dimensional (2D) spin ice of superconducting qubits—macroscopic quantum objects ( 14 )—in a quantum annealing (QA) system and drove it between low-energy quasi-classical states by means of primarily quantum rather than thermal fluctuations, thus opening the door to future studies of quantum phases in these systems ( 15, 16 ).

Quantum percolation of monopole paths and the response of quantum spin ice.

In view of the small size of its constrained Hilbert space, this marks out quantum spin ice as an ideal platform for studying exotic quantum field theories and a target for quantum simulation. The large α QSI implies that experiments probing candidate condensed-matter realizations of quantum spin ice should expect to observe phenomena arising.

The Frustrated Matter of Quantum Spin Liquids | NIST.

May 12, 2016 · Quantum spin ice is a frustrated magnet that displays rich emergent phenomena. For example, the magnetic moments carried by the spins may separate into mobile magnetic charges, producing quantum fractional excitations known as spinons. The spinon moves in a background of disordered spins, and its motion is strongly coupled to the spin. In the simplest quantum spin-ice (QSI) model (1) with nonzero J⊥, the gauge charge acquires a quantum kin-ematics as a QSI monopole, which is a spin-1 2 bosonic spinon playing a role of scalar Higgs fields in the U(1) gauge theory [26]. This kinematics completely lifts the degeneracy of the spin-ice manifold, leading to quantum melting of. Motivated by the rapid experimental progress of quantum spin ice materials, we study the dynamical properties of pyrochlore spin ice in the U(1) spin liquid phases. In particular, we focus on the spinon excitations that appear in high energies and show up as an excitation continuum in the dynamic spin structure factor. The keen connection.

Synthesis, floating zone crystal growth and... - ScienceDirect.

Oct 01, 2021 · Study finds that the fine structure constant of quantum spin ice is large. A figure illustrating a chunk of the pyrochlore lattice of corner-sharing tetrahedra with an embedded Feynman diagram. We study quantum antiferromagnetism on the highly frustrated planar pyrochlore lattice, also known as the square lattice with crossings. The quantum Heisenberg antiferromagnet on this lattice is of interest as a two-dimensional analogue of the pyrochlore lattice magnet. By combining several approaches we conclude that this system is most likely ordered for all values of spin, S, with a two. The quantum spin ice (QSI), a type of quantum spin liquid (QSL) where spin ice configurations tunnel among themselves, is a generalisation of the classical "spin ice" (CSI) integrating quantum fluctuations. Whereas in CSI the excitations are akin to charges with a mutual Coulomb interaction, in the QSI these charges interact through a.

Quantum spin liquid theory for quantum spin ice.

LOS ALAMOS, N.M., July 15, 2021—Using a D-Wave quantum-annealing computer as a testbed, scientists at Los Alamos National Laboratory have shown that it is possible to isolate so-called emergent magnetic monopoles,... They realized an artificial spin ice by using the superconducting qubits of the quantum machine as a magnetic building block.

Planar Pyrochlore, Quantum Ice and Sliding Ice - Semantic Scholar.

Quantum spin-ice represents a paradigmatic example of how the physics of frustrated magnets is related to gauge theories. In the present work, we address the problem of approximately realizing quantum spin ice in two dimensions with cold atoms in optical lattices. The relevant interactions are obtained by weakly laser-admixing Rydberg states to the atomic ground-states, exploiting the strong. Here we report a realization of spin ice in a lattice of superconducting qubits. Unlike conventional artificial spin ice, our system is disordered by both quantum and thermal fluctuations. The ground state is classically described by the ice rule, and we achieve control over a fragile degeneracy point leading to a Coulomb phase. The ability to pin individual spins. 2. Spin Ice 1) Structure, Residual entropy 2) "Dipolar Spin Ice" model 3) Magnetic monopole 4) Dynamic spin ice: Pr 2Sn 2O7 5) Monopole dimers in Dy 2Ge 2O7 3. Quantum Spin Liquid (QSL) 1) Resonating Valence Bond state, Spinon 2) Fermionic-like excitations in insulating QSL 3) QSL in the S = 1/2 triangular lattice Ba 3CuSb 2O9.

The spectral periodicity of spinon continuum in quantum spin ice.

Synthesis, floating zone crystal growth and characterization of the quantum spin ice Pr 2 Zr 2 O 7 pyrochlore. Author links open overlay panel S.M. Koohpayeh a J.-J. Wen a B.A. Trump a b C.L. Broholm a T.M. McQueen a b. Show more.... Spin ice. B1. Pr 2 Zr 2 O 7. A1. Pyrochlore non-stoichiometry. 1. Introduction.

Phys. Rev. Lett. 108, 067204 (2012) - Quantum Ice: A Quantum.

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. Measurements of magnetization (M) and specific heat (C) under a [001] magnetic field were carried out on a single crystal of a quantum spin ice system Yb 2 Ti 2 O 7 in order to investigate a feature of the transition occurred at T C ∼ 0.2 K. As a result of applying the magnetic field μ 0 H < 0.1 T, the C/T − T curve structure and transition temperature barely changed.

Vindication of Yb2Ti2O7 as a model exchange quantum spin ice.

The neutron diffraction and measurements of specific heat and magnetization were carried out on single crystals of a quantum spin ice system Yb 2 Ti 2 O 7.The thermal hysteresis loops of temperature dependence of the magnetization and neutron diffraction intensity indicate a first-order ferromagnetic transition, where the used single crystals are confirmed to have a sharp peak structure in the.