Magnetic exchange and structure relationships in polymeric copper(II) chloride-1,4-dioxane (3:2)

Livermore, J. C.; Willett, Roger D.; Gaura, R. M.; Landee, C. P.

doi:10.1021/ic00134a026

Cited by 42 publications

(22 citation statements)

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“…It is found that our TMRG result fits well with the experimental data, with the coupling parameters J AF /J F = 0.2, J F = 100 K, and h/J F = 0.005. Our calculated result is in agreement with the previous theoretical result [3]. …”

Section: (B)supporting

confidence: 93%

“…Fig. 5(b) gives a comparison of the experimental susceptibility of the compound 3CuCl 2 · 2dx, which is a F-F-AF chain with spin-1/2 [3], with the TMRG result. It is found that our TMRG result fits well with the experimental data, with the coupling parameters J AF /J F = 0.2, J F = 100 K, and h/J F = 0.005.…”

Section: (B)mentioning

confidence: 99%

“…According to Oshikawa-Yamanaka-Affleck (OYA) [2], the F-F-AF chain with spin S may exhibit a magnetization plateau at m = S/3, where m is the magnetization per site. In a typical example of spin-1/2 F-F-AF chain of 3CuCl 2 · 2dx with strong F coupling (J F ) and weak AF coupling (J AF ), however, no plateau in the lowtemperature magnetic curve has been observed [3]. Such a breakdown of the magnetization plateau in small bond ratio of |J AF /J F | [4] suggests that the OYA condition is only a necessary condition.…”

Section: Introductionmentioning

confidence: 98%

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Thermodynamics of spin-1∕2antiferromagnet-antiferromagnet-ferromagnet and ferromagnet-ferromagnet-antiferromagnet trimerized quantum Heisenberg chains

Gao

2006

Phys. Rev. B

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The magnetization process, the susceptibility and the specific heat of the spin-1/2 AF-AF-F and F-F-AF trimerized quantum Heisenberg chains have been investigated by means of the transfer matrix renormalization group (TMRG) technique as well as the modified spin-wave (MSW) theory. A magnetization plateau at m = 1/6 for both trimerized chains is observed at low temperature. The susceptibility and the specific heat show various behaviors for different ferromagnetic and antiferromagnetic interactions and in different magnetic fields. The TMRG results of susceptibility and the specific heat can be nicely fitted by a linear superposition of double two-level systems, where two fitting equations are proposed. Three branch excitations, one gapless excitation and two gapful excitations, for both systems are found within the MSW theory. It is observed that the MSW theory captures the main characteristics of the thermodynamic behaviors at low temperatures. The TMRG results are also compared with the possible experimental data.

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Section: (B)supporting

confidence: 93%

Section: (B)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Thermodynamics of spin-1∕2antiferromagnet-antiferromagnet-ferromagnet and ferromagnet-ferromagnet-antiferromagnet trimerized quantum Heisenberg chains

Gao

2006

Phys. Rev. B

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“…Among others, the dimerized spin-1/2 antiferromagnetic (AF)-ferromagnetic (F) alternaing chain has been widely studied both theoretically 1,2,3 and experimentally, 4 where it was found that the system has a gap from the singlet ground state to the triplet excited states, and can be mapped onto the S=1 Haldane chain 5,6,7 if the F couplings dominate. Moreover, a series of trimerized compounds, including the S=1/2 antiferromagnetic F-F-AF chain of 3CuCl 2 ·2dx (dx =1,4-dioxane) 8 and the ferrimagnetic AF-AF-F chains of [Mn(L 2 )(N3) 2 ] n (L=3-methylpyridine) with S=5/2,…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of spin-12tetrameric Heisenberg antiferromagnetic chain

Gong

Gao

2009

Phys. Rev. B

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The thermodynamic properties of a spin S=1/2 tetrameric Heisenberg antiferromagnetic chain with alternating interactions AF1-AF2-AF1-F (AF and F denote the antiferromagnetic and ferromagnetic couplings, respectively) are studied by means of the transfer-matrix renormalization group method and Jordan-Wigner transformation. It is found that in the absence of magnetic field, the thermodynamic behaviors are closely related to the gapped low-lying excitations, and a novel structure with three peaks in the temperature dependence of specific heat is unveiled. In a magnetic field, a phase diagram in the temperature-field plane for the couplings satisfying JAF 1 =JAF 2 =JF is obtained, in which various phases are identified. The temperature dependence of thermodynamic quantities including the magnetization, susceptibility and specific heat are studied to characterize the corresponding phases. It is disclosed that the magnetization has a crossover behavior at low temperature in the Luttinger liquid phase, which is shown falling into the same class as that in the S=1 Haldane chain. In the plateau regime, the thermodynamic behaviors alter at a certain field, which results from the crossing of two excitation spectra. By means of the fermion mapping, it is uncovered that the system has four spectra from fermion and hole excitations that are responsible for the observed thermodynamic behaviors.

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“…It was reported by Ajiro et al that the material 2Dioxane·3CuCl 2 realizes a peculiar ferro-ferroantiferromagnetic (FFA) Heisenberg S = 1/2 chain [47]. With the aim to further investigate this famous model, at ORNL we set out to prepare samples following the procedure described in [48]. The resulting single crystals seemed to match the description and bulk properties reported in Ajiro's work.…”

Section: An Accidental Discovery: An Almost Perfect S = 1/2 Spin Chainmentioning

confidence: 80%

Crystals for neutron scattering studies of quantum magnetism

Yankova

Hüvonen

Mühlbauer

et al. 2012

Philosophical Magazine

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We review a strategy for targeted synthesis of large single crystal samples of prototype quantum magnets for inelastic neutron scattering experiments. Four case studies of organic copper halogenide S = 1/2 systems are presented. They are meant to illustrate that exciting experimental results pertaining to forefront many-body quantum physics can be obtained on samples grown using very simple techniques, standard laboratory equipment, and almost no experience in in advanced crystal growth techniques.

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Magnetic exchange and structure relationships in polymeric copper(II) chloride-1,4-dioxane (3:2)

Cited by 42 publications

References 0 publications

Thermodynamics of spin-1∕2antiferromagnet-antiferromagnet-ferromagnet and ferromagnet-ferromagnet-antiferromagnet trimerized quantum Heisenberg chains

Thermodynamics of spin-1∕2antiferromagnet-antiferromagnet-ferromagnet and ferromagnet-ferromagnet-antiferromagnet trimerized quantum Heisenberg chains

Thermodynamics of spin-12tetrameric Heisenberg antiferromagnetic chain

Crystals for neutron scattering studies of quantum magnetism

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