Quantum Spin Ice

10.06.2022

QED-C® Announces Four Projects Designed to Advance Cryogenics.
Quantum spin ice on the breathing pyrochlore lattice.
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Disorder and Quantum Spin Ice - Physical Review Journals.
Quantum Spin Ice under a [111] Magnetic Field: From Pyrochlore to.
Quantum ice: a quantum Monte Carlo study. - Abstract - Europe PMC.
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Spin ice / spin liquid v.s. quantum spin ice / quantum spin liquid.
Insights & Outcomes: Gene variants and quantum competitions.
Temperature and magnetic ﬁeld dependence of spin-ice... - NIST.
Quantum Artificial Spin Ice | Semantic Scholar.
Fingerprints of quantum spin ice in Raman scattering.
Finding order in disorder demonstrates a new state of matter.

QED-C® Announces Four Projects Designed to Advance Cryogenics.

The enhanced spectral periodicity of the spinon continuum provides a sharp physical observable to detect the spin quantum number fractionalization and U (1) spin liquid. Our prediction can be immediately examined by inelastic neutron scattering experiments among quantum spin ice materials with Kramers' doublets. Further application to the non.

Quantum spin ice on the breathing pyrochlore lattice.

Spin-ice materials are canonical examples of frustration, and Ising spins in a transverse magnetic field are the simplest many-body model of quantum tunneling. Here, we show that the tripod kagome lattice material Ho3Mg2Sb3O14 unites an ice-like magnetic degeneracy with quantum-tunneling terms generated by an intrinsic splitting of the Ho3. The quantum spin ice system is distinguished by its much lower current damping rate than the classical spin ice systems. κ ( ω) can be fitted to equation (1), which contains three independent. One of the great recent insights of condensed matter physics is that QED-like theories describe the behavior of quantum spin ice, a class of fractionalized magnets. Rather than being ordered in a.

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With experimental work demonstrating that the correlated ground state of the pyrochlore system Ce 2 Sn 2 O 7 is a quantum liquid of magnetic octupoles, an international team led by PSI researcher Romain Sibille establishes a fundamentally new state of matter: higher-rank multipole ice.. Spin ice is an intriguing state of matter. If magnetic moments are suitably arranged in a crystal structure.

Disorder and Quantum Spin Ice - Physical Review Journals.

At the most general level, Quantum Spin Ice refers to a pyrochlore system in which ice-rule obeying configurations are endowed with dynamics from quantum fluctuations. To generate such a state experimentally, material candidates must support anisotropic exchange interactions between localized spins on the pyrochlore lattice. Quantum spin ices are a class of substances in which particles can’t agree. The materials are made up of particles with spin, a quantum version of.

Quantum Spin Ice under a [111] Magnetic Field: From Pyrochlore to.

This vindicates Yb2Ti2O7 as a model quantum spin ice. We find that in the perturbative weak quantum regime, such a system has a ferrimagnetic ordered ground state, with two peaks in C(T): a Schottky anomaly signaling the paramagnetic to spin ice crossover, followed at a lower temperature by a sharp peak accompanying a first-order phase. Dep. Phys. Astron., Univ. Waterloo, Waterloo, Ont. N2L 3G1, Can. Search for more papers by this author. May 24, 2022 · Apr. 8, 2021 — It may be possible in the future to use information technology where electron spin is used to store, process and transfer information in quantum computers. It has long been the.

Quantum ice: a quantum Monte Carlo study. - Abstract - Europe PMC.

May 02, 2022 · Like “conventional” quantum spin ice, π-OQSI has gapless photons and two types of gapped excitations (magnetic and electric charges), in close analogy to Maxwell electrodynamics. 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. May 11, 2022 · Because electrons possess a fundamental quantum mechanical property called spin — a measure of the electron’s intrinsic angular momentum — and an electron’s spin can be either +½ or -½.

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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. May 23, 2022 · The Quantum Economic Development Consortium (QED-C), managed by SRI International, in strategic partnership with the U.S. Department of Commerce's National Institute of Standards and Technology. 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.

Spin ice / spin liquid v.s. quantum spin ice / quantum spin liquid.

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 ). We consider quantum spin ice in a temperature regime in which its response is dominated by the coherent motion of a dilute gas of monopoles through an incoherent spin background, taken to be quasistatic on the relevant timescales. The latter introduces well-known blocked directions that we find sufficient to reduce the coherent propagation of.

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Spin-Ice State of the Quantum Heisenberg Antiferromagnet on the Pyrochlore Lattice. Authors: Huang, Yuan; Chen, Kun; Deng, Youjin; Prokof'ev, Nikolay; Svistunov, Boris Publication Date: 2016-04-01 NSF-PAR ID: 10016306 Journal Name: Physical Review Letters Volume: 116 Issue: 17 ISSN: 0031-9007.

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

May 04, 2022 · Neon ice shows promise as a new platform for quantum bits (a.k.a. qubits).Electrodes in the microchip can keep electrons that get trapped on the solid neon in place for more than.

Quantum Artificial Spin Ice | Semantic Scholar.

A spin ice is a magnetic substance that does not have a single minimal-energy state.It has magnetic moments (i.e. "spin") as elementary degrees of freedom which are subject to frustrated interactions.By their nature, these interactions prevent the moments from exhibiting a periodic pattern in their orientation down to a temperature much below the energy scale set by the said interactions. 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. May 24, 2022 · Mar. 2, 2020 — Scientists have succeeded in taking repeated measurements of the spin of an electron in a silicon quantum dot (QD), without changing the spin in the process. This type of 'non.

Fingerprints of quantum spin ice in Raman scattering.

Instead our low energy inelastic neutron scattering measurements show a dynamic quantum spin ice state, with suppressed scattering near Q = 0, and no long range order at low temperatures. This is consistent with recent theory predicting symmetry enriched U (1) quantum spin liquids for such DO doublets decorating the pyrochlore lattice. Citation. Of particular interest at the moment are "quantum spin-ice" materials, where large quantum fluctuations may permit tunnelling between a macroscopic number of different classical ground states. Here we use zero-temperature quantum Monte Carlo simulations to show how such tunnelling can lift the degeneracy of a spin or charge ice, stabilizing a. Condensed-matter systems provide alternative "vacua" exhibiting emergent low-energy properties drastically different from those of the standard model. A case in point is the emergent quantum electrodynamics (QED) in the fractionalized topological magnet known as quantum spin ice, whose magnetic monopoles set it apart from the familiar QED of the world we live in.

Finding order in disorder demonstrates a new state of matter.

Classical spin ice pyrochlores are conjectured to lead to QSLs in the presence of the inevitable quantum uc-tuations at low temperatures.4,8 The e ects of certain types of quantum uctuations on the spin ice state have been investigated theoretically12 and numerically,13,14 where they have been demonstrated to lift the classi. Interaction strength [1]. A prominent example is quantum spin ice (QSI) [2]. By introducing quantum spin fluctua-tions to classical spin ice through transverse interspin interactions, it has been proposed that a quantum spin liquid (QSL) phasewith gapless photonlike excitations can be realized [2]. Several materials have been examined in the. 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.