Search Results - "Gingras, M J P"
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Quantum spin ice: a search for gapless quantum spin liquids in pyrochlore magnets
Published in Reports on progress in physics (01-05-2014)“…The spin ice materials, including Ho2Ti2O7 and Dy2Ti2O7, are rare-earth pyrochlore magnets which, at low temperatures, enter a constrained paramagnetic state…”
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Probing Flat Band Physics in Spin Ice Systems via Polarized Neutron Scattering
Published in Physical review letters (11-03-2022)“…In this Letter, we illustrate how polarized neutron scattering can be used to isolate the spin-spin correlations of modes forming flat bands in a frustrated…”
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Special temperatures in frustrated ferromagnets
Published in Nature communications (21-05-2018)“…The description and detection of unconventional magnetic states, such as spin liquids, is a recurring topic in condensed matter physics. While much of the…”
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Spin ice Thin Film: Surface Ordering, Emergent Square ice, and Strain Effects
Published in Physical review letters (19-05-2017)“…Motivated by recent realizations of Dy_{2}Ti_{2}O_{7} and Ho_{2}Ti_{2}O_{7} spin ice thin films, and more generally by the physics of confined gauge fields, we…”
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Spin ice: magnetic excitations without monopole signatures using muon spin rotation
Published in Physical review letters (11-11-2011)“…Theory predicts the low temperature magnetic excitations in spin ices consist of deconfined magnetic charges, or monopoles. A recent transverse-field (TF) muon…”
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Pressure-induced crystallization of a spin liquid
Published in Nature (London) (07-11-2002)“…Liquids are expected to crystallize at low temperature. The only exception is helium, which can remain liquid at 0 K, owing to quantum fluctuations. Similarly,…”
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Vindication of Yb2Ti2O7 as a model exchange quantum spin ice
Published in Physical review letters (31-08-2012)“…We use numerical linked-cluster expansions to compute the specific heat C(T) and entropy S(T) of a quantum spin ice Hamiltonian for Yb2Ti2O7 using anisotropic…”
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Understanding Reentrance in Frustrated Magnets: the Case of the Er2Sn2O7 Pyrochlore
Published in Physical review letters (30-12-2021)“…Reentrance, the return of a system from an ordered phase to a previously encountered less-ordered one as a controlled parameter is continuously varied, is a…”
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Nonmonotonic residual entropy in diluted spin ice: A comparison between Monte Carlo simulations of diluted dipolar spin ice models and experimental results
Published in Physical review. B, Condensed matter and materials physics (19-12-2014)“…In this work, we report results from Monte Carlo simulations of site-diluted microscopic dipolar spin ice models (DSIM) that account quantitatively for the…”
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Juxtaposition of spin freezing and long range order in a series of geometrically frustrated antiferromagnetic gadolinium garnets
Published in Physical review. B, Condensed matter and materials physics (20-05-2013)“…Specific heat measurements in zero magnetic field are presented on a homologous series of geometrically frustrated antiferromagnetic Heisenberg garnet systems…”
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Induced random fields in the LiHoxY1-xF4 quantum Ising magnet in a transverse magnetic field
Published in Physical review letters (08-12-2006)“…The LiHoxY1-xF4 magnetic material in a transverse magnetic field Bx x perpendicular to the Ising spin direction has long been used to study tunable quantum…”
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Evidence for gapped spin-wave excitations in the frustrated Gd2Sn2O7 pyrochlore antiferromagnet from low-temperature specific heat measurements
Published in Physical review letters (31-08-2007)“…We have measured the low-temperature specific heat of the geometrically frustrated pyrochlore Heisenberg antiferromagnet Gd2Sn2O7 in zero magnetic field. The…”
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Néel order, ring exchange, and charge fluctuations in the half-filled Hubbard model
Published in Physical review. B, Condensed matter and materials physics (16-09-2005)Get full text
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Refrustration and competing orders in the prototypical Dy2Ti2O7 spin ice material
Published in Physical review. B, Condensed matter and materials physics (07-01-2016)“…Spin ices, frustratedmagnetic materials analogous to common water ice, have emerged over the past 15 years as exemplars of high frustration in three…”
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Unravelling competing microscopic interactions at a phase boundary: a single crystal study of the metastable antiferromagnetic pyrochlore Yb$_{2}$Ge$_{2}$O$_{7}
Published 22-10-2020“…Phys. Rev. B 102, 134418 (2020) We report inelastic neutron scattering measurements from our newly synthesized single crystals of the structurally metastable…”
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Understanding Reentrance in Frustrated Magnets: The Case of the Er 2 Sn 2 O 7 Pyrochlore
Published in Physical review letters (01-12-2021)Get full text
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17
Special temperatures in frustrated ferromagnets
Published 23-05-2018“…Nature Communications 9 (2018) 1999 The description and detection of unconventional magnetic states such as spin liquids is a recurring topic in condensed…”
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Neutron spectroscopic study of crystal field excitations in Tb2Ti2O7 and Tb2Sn2O7
Published in Physical review. B, Condensed matter and materials physics (14-04-2014)“…We present time-of-flight inelastic neutron scattering measurements at low temperature on powder samples of the magnetic pyrochlore oxides Tb2Ti2O7 and…”
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Spin Ice State in Frustrated Magnetic Pyrochlore Materials
Published in Science (American Association for the Advancement of Science) (16-11-2001)“…A frustrated system is one whose symmetry precludes the possibility that every pairwise interaction ("bond") in the system can be satisfied at the same time…”
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Bosonic Many-body Theory of Quantum Spin Ice
Published 12-02-2015“…Phys. Rev. B 90, 214430 (2014) We carry out an analytical study of quantum spin ice, a U$(1)$ quantum spin liquid close to the classical spin ice solution for…”
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