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Orendáč, M.; Čižmár, E.; Orendáčová, A.; Černák, Juraj; Feher, A.; Meisel, Mark W.; Abboud, K.A.; Zvyagin, S. A.; Sieling, M.; Rieth, T.; Lüthi, B.

doi:10.1103/physrevb.61.3223

Cited by 25 publications

(36 citation statements)

References 14 publications

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“…Our specific heat data measurements together with complementary data of susceptibility, magnetization, and ESR measurements, which were published elsewhere [5][6][7], have confirmed that NENC, NDPK, and NBYC can be considered as a quantum S = 1 magnetic chain with planar anisotropy and nonzero in-plane anisotropy. Specific-heat data were analyzed within the framework of the extended strong-coupling theory with in-plane anisotropy incorporated [8].…”

Section: Introductionsupporting

confidence: 81%

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Feher

Orendáč

Orendáčová

et al. 2002

Low Temperature Physics

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O are reported. All compounds are identified as S = 1 planar Heisenberg magnetic chains with large planar anisotropy and different values of the in-plane anisotropy constant. The low-temperature specific heat data are interpreted assuming the existence of noninteracting excitons and antiexcitons as elementary excitations from the singlet-ground state. The extended strong-coupling model is used for analysis of the data at higher temperatures. The applicability of the models used with respect to the value of the in-plane anisotropy is discussed.

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Section: Introductionsupporting

confidence: 81%

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Feher

Orendáč

Orendáčová

et al. 2002

Low Temperature Physics

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“…Renard et al 21 showed that NENP had the energy spectrum predicted by Haldane; the magnetic susceptibility decreased steeply at low temperatures for all of the crystal axes suggesting a single ground state and neutron inelastic scattering showed that the magnetic excitation had a gap at the AF zone center. Other Q1D spin-1 compounds Ni(C 2 H 8 N 2 ) 2 Ni(CN) 4 (abbreviated NENC), 22,23,24,25 26,27,28 and Ni(C 5 H 14 N 2 ) 2 N 3 (ClO 4 ) (abbreviated NDMAZ) 29 have also been identified as effective Heisenberg chains. This class of compounds exhibits a non-degenerate ground state which can be separated from the lowest excitation.…”

mentioning

confidence: 99%

“…As predicted by Haldane, it is experimentally shown that these systems have an energy gap between the single ground state and first excited triplet. 21,22,23,24,25,26,27,28,29 In addition, exception Haldane systems, several Q1D AF spin-1 gapped compounds such as AF dimer compoundwhere (Medpt=methyl-bis(3-aminopropyl)amine), the ladder system 3,3',5,5'-tetrakis (N-tert-butylaminxyl)biphenyl (BIP-TENO), 17,30,31 the spin-Peierls systems 32,33,34,35 (Li,Na)V(Si,Ge) 2 O 6 have been synthesized and magnetic properties have been studied.The magnetic quantization behavior has been experimentally observed in only several gapped spin-1 AF materials as predicted by OYA. …”

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confidence: 99%

mentioning

confidence: 99%

“…As predicted by Haldane, it is experimentally shown that these systems have an energy gap between the single ground state and first excited triplet. 21,22,23,24,25,26,27,28,29 In addition, exception Haldane systems, several Q1D AF spin-1 gapped compounds such as AF dimer compound 16 where (Medpt=methyl-bis(3-aminopropyl)amine), the ladder system 3,3',5,5'-tetrakis (N-tert-butylaminxyl)biphenyl (BIP-TENO), 17 17 reported the existence of the magnetization a plateau at 0.25 in spin-1 3,3',5,5'-tetrakis (N-tert-butylaminxyl)biphenyl (BIP-TENO). On the other hand, in theoretical studies, Chen et al 4 employed the classical Monte Carlo method to investigate the magnetization plateaus of 1D classic spin-1 AF Ising chain with a single-ion anisotropy under the external field at low temperatures, and they showed that the system has 2S + 1 magnetic plateaus.…”

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confidence: 99%

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Magnetic and Thermal Behaviour of One-Dimensional Antiferromagnetic Spin-1 Ising Chain at Low Temperatures

Aydıner¹,

Akyüz²

2005

Chinese Phys. Lett.

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In this study, we have investigated ground state properties of one-dimensional antiferromagnetic spin-1 chain with single-ion anisotropy at very low temperatures using the Transfer Matrix method. Magnetic plateaus, phase diagram, specific heat, susceptibility of the spin chain have been evaluated numerically from the free energy. Results are in good agreement with the experimental data for the spin-1 compounds [Ni2(Medpt)2(µ-ox)(H2O)2](ClO4)22H2O, [Ni2(Medpt)2(µ-ox)(µ-N3)](ClO4)0.5H2O, Ni(C2H8N2)Ni(CN)4 and Ni(C10H8N2)2Ni(CN)4.H2O. However, spin-Peierls transition have not been observed in the temperature dependence of specific heat and magnetic susceptibility. The physics of low-dimensional i.e., one-dimensional (1D) or quasi-one-dimensional (Q1D) spin-S (S≥ 1) chains has attracted a considerable amount of attention after the prediction by Haldane 1 that a 1D Heisenberg antiferromagnet should have an energy gap between the singlet ground state and the first excited triplet states in the case of an integer spin quantum number, while the energy levels are gapless in the case of a half integer spin quantum number. The most fascinating characteristic of these low-dimensional systems is that they show magnetic plateaus i.e., quantization of magnetization at low temperatures near the ground state. This phenomenon has been observed not only in Haldane spin systems but also in other spin gapped systems for instance; spinPeierls and spin ladders systems. A general condition of quantization of the magnetization was derived from the Lieb-Schultz-Mattis theorem 2 for low-dimensional magnetic systems. The fact that, Oshikawa, Yamanaka and Affleck (OYA) 3 discussed this plateau problem and derived a condition p(S − m) = integer, necessary for the appearance of the plateau in the magnetization curve of one-dimensional spin system, where S is the magnitude of spin, m is the magnetization per site and p is the spatial period of the ground state, respectively. The 2S + 1 magnetization plateaus (contained the saturated magnetization m = S) can appear when the magnetic field increases from zero to its saturation value h s . Theoretical studies have suggested the realization of quantization of magnetization in various systems, 3,4,5,6,7,8,9,10,11,12,13,14 and it has been observed in experimental studies. 15,16,17,18,19 Recent years, antiferromagnetic (AF) spin-1 systems among the other low-dimensional gapped spin-S systems have drawn attention from both theorists and experimentalists in literature. So far, many Q1D gapped AF spin-1 systems, which are called Haldane systems, spin-Peierls and ladder compounds, were synthesized and to understand the ground state behaviors of the spin-1 AF Heisenberg chain have been extensively studied. The first Q1D spin-1 Haldane gap compound was Ni(C 2 H 8 N 2 ) 2 NO 2 (ClO 4 ) (abbreviated NENP) which was synthesized by Meyer et al. 20 in 1981, just before the Haldane's prediction appeared. Renard et al. 21 showed that NENP had the energy spectrum predicted by Haldane; the magnetic susceptibility ...

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High-Field Esr Spectroscopy of Low-Dimensional Quantum Spin Systems

Zvyagin

Spectroscopy of Emerging Materials

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Magnetic and thermodynamic properties ofNi(C10H8
M. Orendáč
¹
,
E. Čižmár
²
,
A. Orendáčová
³

et al.

Cited by 25 publications

References 14 publications

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Magnetic and Thermal Behaviour of One-Dimensional Antiferromagnetic Spin-1 Ising Chain at Low Temperatures

High-Field Esr Spectroscopy of Low-Dimensional Quantum Spin Systems

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Magnetic and thermodynamic properties ofNi(C10H8M. Orendáč1, E. Čižmár2, A. Orendáčová3 et al.

Cited by 25 publications

References 14 publications

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Specific heat study of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy

Magnetic and Thermal Behaviour of One-Dimensional Antiferromagnetic Spin-1 Ising Chain at Low Temperatures

High-Field Esr Spectroscopy of Low-Dimensional Quantum Spin Systems

Contact Info

Product

Resources

About

Magnetic and thermodynamic properties ofNi(C10H8
M. Orendáč
¹
,
E. Čižmár
²
,
A. Orendáčová
³

et al.