Unusual Magnetic Response of an $S = 1$ Antiferromagetic Linear-Chain Material

Xia, Jicheng; Meisel, M. W.; Ożarowski, Andrzej; Spurgeon, Peter M.; Graham, Adora G.; Manson, Jamie L.

doi:10.48550/arxiv.1409.5971

Cited by 3 publications

(7 citation statements)

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“…Of particular interest is the recently synthesized compound [Ni(HF 2 )(3-Clpy) 4 ]BF 4 that is believed to lie near the 1D Gaussian critical point. 57,58 We note here that this critical point is well-described by the Tomonaga-Luttinger liquid theory with Luttinger parameter K ≈ 1.321. 10 It is important to take the crystal symmetry into consideration, as it determines which symmetry breaking and conserving phases can occur.…”

Section: Phase Diagramsupporting

confidence: 53%

Characterizing the Haldane phase in quasi-one-dimensional spin-1 Heisenberg antiferromagnets

Wierschem

Sengupta

2014

Mod. Phys. Lett. B

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We review the basic properties of the Haldane phase in spin-1 Heisenberg antiferromagnetic chains, including its persistence in quasi-one-dimensional geometries. Using large-scale numerical simulations, we map out the phase diagram for a realistic model applicable to experimental Haldane compounds. We also investigate the effect of different chain coupling geometries and confirm a general mean field universality of the critical coupling times the coordination number of the lattice. Inspired by the recent development of characterization of symmetry protected topological states, of which the Haldane phase of spin-1 Heisenberg antiferromagnetic chain is a preeminent example, we provide direct evidence that the quasi-one-dimensional Haldane phase is indeed a non-trivial symmetry protected topological state.

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Section: Phase Diagramsupporting

confidence: 53%

Characterizing the Haldane phase in quasi-one-dimensional spin-1 Heisenberg antiferromagnets

Wierschem

Sengupta

2014

Mod. Phys. Lett. B

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“…2 )] coordination polymers, self-assembled from strong chargeassisted H-bonds (e.g., F [10,11,27,[29][30][31][32][33][34][35][36][37]. Weaker O-H• • • F types have also been examined [38][39][40][41][42][43][44] .…”

Section: A Design Strategymentioning

confidence: 99%

“…More recently, interest in predicting and controlling the magnetic ground state of S = 1 quantum magnets has been fueled by the realization of a myriad of magnetic phases in a series of metalorganic coordination compounds. This includes the observation of field-induced Bose-Einstein condensation in NiCl 2 -4SC(NH 2 ) 2 [6][7][8], as well as the development of a Haldane phase in both [Ni(C 2 H 8 N 2 ) 2 NO 2 ]ClO 4 [9] and [Ni(HF 2 )(3-Clpy) 4 ]BF 4 (Clpy = C 5 H 4 NCl = chloropyridine) [10][11][12]. Ground-state diversity is attributable to the interplay between the single-ion anisotropy (D) and Heisenberg spin-exchange interactions (J) in these materials, which are both determined (in part) by the lattice geometry 12 .…”

Section: Introductionmentioning

confidence: 99%

“…Unlike classical systems, ideal S = 1 chains (J = 0) are vulnerable to strong quantum fluctuations 11 , which can have a profound influence on the magnetic ground state and act to suppress long-range order. Quantum Monte-Carlo (QMC) simulations predict that for easyplane anisotropy a Haldane ground state gives way to quantum paramagnetism (QP) as the D/J ratio increases, while the effects of J are to alleviate the quantum disorder and induce an XY -AFM (or Néel if D = 0) ordered phase 10 .…”

Section: Introductionmentioning

confidence: 99%

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Combining microscopic and macroscopic probes to untangle the single-ion anisotropy and exchange energies in an S=1 quantum antiferromagnet

et al. 2017

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. (2017) Combining microscopic and macroscopic probes to untangle the single-ion anisotropy and exchange energies in an S=1 quantum antiferromagnet. Physical Review B (Condensed Matter and Materials Physics), 95 (13). 134435. Permanent WRAP URL:http://wrap.warwick.ac.uk/87422 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. A note on versions:The version presented in WRAP is the published version or, version of record, and may be cited as it appears here.For more information, please contact the WRAP Team at: wrap@warwick.ac.ukCombining micro-and macroscopic probes to untangle single-ion anisotropy and exchange energies in a S = 1 quantum antiferromagnet The magnetic ground state of the quasi-one-dimensional spin-1 antiferromagnetic chain is sensitive to the relative sizes of the single-ion anisotropy (D) and the intrachain (J) and interchain (J ) exchange interactions. The ratios D/J and J /J dictate the material's placement in one of three competing phases: a Haldane gapped phase, a quantum paramagnet and an XY -ordered state, with a quantum critical point at their junction. We have identified [Ni(HF)2(pyz)2]SbF6, where pyz = pyrazine, as a rare candidate in which this behavior can be explored in detail. Combining neutron scattering (elastic and inelastic) in applied magnetic fields of up to 10 tesla and magnetization measurements in fields of up to 60 tesla with numerical modeling of experimental observables, we are able to obtain accurate values of all of the parameters of the Hamiltonian [D = 13.3(1) K, J = 10.4(3) K and J = 1.4(2) K], despite the polycrystalline nature of the sample. Densityfunctional theory calculations result in similar couplings (J = 9.2 K, J = 1.8 K) and predict that the majority of the total spin population resides on the Ni(II) ion, while the remaining spin density is delocalized over both ligand types. The general procedures outlined in this paper permit phase boundaries and quantum-critical points to be explored in anisotropic systems for which single crystals are as yet unavailable.

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“…Thus, increasing SOC can drive the crystal from a topological Haldane phase to a trivial 'D-phase' consisting of the tensor product of j = 0 states on each molecule. Hence, a quantum phase transition [41] may be induced in the family of materials based on Mo 3 S 7 (dmit) 3 crystals by substituting, say, Mo→W [20] or S→Se [14], which effectively increases the SOC. Intriguingly, although several selenated analogs of Mo 3 S 7 (dmit) 3 have been synthesized [17], little is known about their magnetic properties.…”

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confidence: 99%

Topological quantum phase transition driven by anisotropic spin-orbit coupling in trinuclear organometallic coordination crystals

Merino,

Jacko,

Khosla

et al. 2016

Preprint

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We show how quasi-one-dimensional correlated insulating states arise at two-thirds filling in organometallic multinuclear coordination complexes described by layered decorated honeycomb lattices. The interplay of spin-orbit coupling and electronic correlations leads to pseudospin-1 moments arranged in weakly coupled chains with highly anisotropic exchange and a large trigonal splitting. This leads to a quantum phase transition from a Haldane phase to a topologically trivial phase as the relative strength of the spin-orbit coupling increases.

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Unusual Magnetic Response of an $S = 1$ Antiferromagetic Linear-Chain Material

Cited by 3 publications

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Characterizing the Haldane phase in quasi-one-dimensional spin-1 Heisenberg antiferromagnets

Characterizing the Haldane phase in quasi-one-dimensional spin-1 Heisenberg antiferromagnets

Combining microscopic and macroscopic probes to untangle the single-ion anisotropy and exchange energies in an S=1 quantum antiferromagnet

Topological quantum phase transition driven by anisotropic spin-orbit coupling in trinuclear organometallic coordination crystals

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