Search Results - "Zamar, R C"
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1
Intramolecular character of the intrapair dipolar order relaxation in the methyl deuterated nematic para-azoxyanisole
Published in Chemical physics letters (26-04-2002)Get full text
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2
Relaxation properties of proton magnetic spin quasi-invariants in liquid crystals
Published in Physica. B, Condensed matter (01-07-2002)“…We present an experimental study of the thermodynamic properties of proton pairs in two thermotropic nematic liquid crystals: chain deuterated 4-…”
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3
Proton NMR relaxation of the dipolar quasi-invariants of nematic methyl deuterated para-azoxyanisole within the high-temperature Redfield relaxation theory
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-11-2006)“…The high-temperature Redfield spin-lattice relaxation theory is used for calculating the relaxation times of the different dipolar quasi-invariants in an…”
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4
Adiabatic quantum decoherence in many non-interacting subsystems induced by the coupling with a common boson bath
Published 19-10-2021“…Annals of Physics (2021) This work addresses quantum adiabatic decoherence of many-body spin systems coupled with a boson field in the framework of open…”
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5
NMR dipolar constants of motion in liquid crystals: Jeener–Broekaert, double quantum coherence experiments and numerical calculation on a 10-spin cluster
Published in Solid state nuclear magnetic resonance (01-10-2009)“…Two proton quasi-equilibrium states were previously observed in nematic liquid crystals, namely the S and W quasi-invariants. Even though the experimental…”
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6
Adiabatic quantum decoherence in many non-interacting subsystems induced by the coupling with a common boson bath
Published in Annals of physics (01-11-2021)“…This work addresses adiabatic quantum decoherence of many-body spin systems coupled with a boson field in the framework of open quantum systems theory. We…”
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7
Decoherence of multiple quantum coherences generated from a dipolar ordered state
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-01-2011)“…Starting from the hypothesis that the decay of coherent signals observed in 1H NMR experiments is driven by quantum interference, irreversible decoherence, and…”
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8
NMR proton spin dynamics in thermotropic liquid crystals subject to multipulse excitation
Published in Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics (01-10-2003)“…Previous experiments of NMR spin-lattice relaxation times as a function of the Larmor frequency, as measured with the field-cycling technique (FC), were shown…”
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9
Quantum irreversible decoherence behaviour in open quantum systems with few degrees of freedom. Application to 1H NMR reversion experiments in nematic liquid crystals
Published 18-09-2013“…THE JOURNAL OF CHEMICAL PHYSICS 139, 154901 (2013) An experimental study of NMR spin decoherence in nematic liquid crystals (LC) is presented. Decoherence…”
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10
Irreversible decoherence of dipole interacting nuclear spins coupled with a phonon bath
Published 07-05-2015“…Phys. Rev. A 93, 022120 (2016) We report a first-principle theoretical study of the adiabatic decoherence undergone by a nuclear spin system in a solid,…”
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11
Evidence of several dipolar quasi-invariants in Liquid Crystals
Published 06-05-2013“…In a closed quantum system of N coupled spins with magnetic quantum number I, there are about (2I + 1)^N constants of motion. However, the possibility of…”
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12
Dipolar quasi-invariants in H 1 NMR of nematic thermotropic liquid crystals
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-01-2005)Get full text
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13
Quasi-equilibrium states in thermotropic liquid crystals studied by multiple quantum NMR
Published 20-07-2010“…J. Chem. Phys. 130, 024501 (2009) We study the nature of the quasiinvariants in nematic 5CB and measure their relaxation times by encoding the multiple quantum…”
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14
Quasi-equilibrium and quantum correlation in an open spin-pair system
Published 29-03-2023“…Quasi-equilibrium states that can be prepared in solids through Nuclear Magnetic Resonance (NMR) techniques are out-of-equilibrium states that slowly relax…”
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15
Nuclear quadrupole spin-lattice relaxation in anharmonic molecular crystals
Published in Physical review. B, Condensed matter (01-01-1995)Get full text
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16
Evolution towards quasi-equilibrium in nematic liquid crystals studied through decoherence of multi-spin multiple-quantum coherences
Published 06-05-2015“…New evidence is presented in favor of irreversible decoherence as the mechanism which leads an initial out-of-equilibrium state to quasi-equilibrium in nematic…”
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17
Dipolar quasi-invariants in 1H NMR of nematic thermotropic liquid crystals
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-01-2005)“…We analyze the experimental conditions needed for creating two kinds of dipolar order, namely, intrapair and interpair order in thermotropic liquid crystals…”
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