Magnetic interaction between impurity and impurity-liberated spins in the doped Haldane chain compounds<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi><mml:msub><mml:mi mathvariant="normal">Ni</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>A</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi mathvariant="normal">V</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mm

Zorko, A.; Arčon, Denis; Lappas, Alexandros; Jagličić, Zvonko

doi:10.1103/physrevb.73.104436

Cited by 4 publications

(5 citation statements)

References 40 publications

(56 reference statements)

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“…Although not exactly the same case as our study, in spin-1/2 systems it has been calculated that spinless vacancies can affect the surrounding spins in several ways, such as enhancing the local susceptibility of the AFM spins and leaving uncompensated moments [24]. In fact, these endchain spins with broken AFM bonds and their coupling across the vacancy site [29], as well as small changes in the local structural distortions [30], can promote local FM correlations. Within this picture, EB occurs due to a close interaction between AFM V chains and vacancy-induced magnetized regions.…”

Section: Magnetic Propertiesmentioning

confidence: 84%

Disorder effects in the S=1 antiferromagnetic spin ladder CaV2O4

Guitarra

Caneiro

Niebieskikwiat

2015

Journal of Magnetism and Magnetic Materials

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Section: Magnetic Propertiesmentioning

confidence: 84%

Disorder effects in the S=1 antiferromagnetic spin ladder CaV2O4

Guitarra

Caneiro

Niebieskikwiat

2015

Journal of Magnetism and Magnetic Materials

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“…Indeed, in a fine grain sphere of m-40h, the axis passing through the sphere center could be the longest chain, which is about 58 nm (table 1) and contains 278 Ni ions. This is much larger than the spin correlation length of 6 ion distances [27]. Far from the sphere center, the chains are shorter but their number is large.…”

Section: Size Reduction-induced Breaking Of Chainmentioning

confidence: 85%

“…Interestingly, chemical doping in the Ni chain induces staggered magnetization near the chain ends. Thus, longrange AFM ordering takes place [26][27][28], accompanying the liberating of S = 1/2 spins at the ends of finite chain [26,28].…”

Section: Introductionmentioning

confidence: 99%

Size reduction-induced chain breaking in Haldane-chain compounds SrNi_2−xMg_xV₂O₈(x = 0 and 0.1)

Yue¹,

Ouyang²,

Sun³

et al. 2017

J. Phys.: Condens. Matter

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We report size reduction-induced chain breaking in the spin-1 Haldane-chain SrNi Mg VO (x = 0 and 0.1) by magnetization and electron spin resonance measurements. For x = 0.0, the magnetic susceptibility of all samples can be well described by a temperature-independent term, a Curie-Weiss term and a Haldane-gap term. This implies that a reduced sample grain size breaks the long chain and creates a considerable number of S = 1/2 edge spins, resulting in the enhancement of magnetization and the decrease of Haldane gap in the samples. These edge spins as well as the other paramagnetic ions at grain boundary and surface might be weakly coupled with each other. For the Mg-doped sample with x = 0.1, there are more S = 1/2 spins creased in relative to x = 0.0 because of a combined effect of lattice defects, Mg-doping and reduced size. In addition, the antiferromagnetic resonance of x = 0.1 is also presented.

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“…The 51 V (I ¼ 7 2 ) NMR measurements were performed on PbNi 1:92 Co 0:08 V 2 O 8 polycrystalline sample in the magnetic field of 6.34 T and at temperatures around T N ¼ 7:1 K, which corresponds to the Ne´el temperature in low magnetic fields [9]. The spectra were obtained from Hahn-echo amplitudes while sweeping the resonance frequency.…”

Section: Resultsmentioning

confidence: 99%

“…51 V nuclei serve as local probes, weakly coupled to the system of magnetic moments. Therefore, this method is more suited for the investigation of the ordered phase than the more direct electron spin resonance technique, where the spectra become unobservable already far above the phase transition in X-band (n ¼ 9:7 GHz) [9]. …”

Section: Introductionmentioning

confidence: 99%