The NBS alloy data center :

Carter, G C; Kahan, D. J.; Bennett, L. H.; Cuthill, J. R.; Dobbyn, R. C.

doi:10.6028/nbs.sp.324

Cited by 6 publications

(8 citation statements)

References 0 publications

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“…In addition, the gap between the doublets and quartet, ∼ 3.7 K, is consistent with the estimates given by Chiorescu et al [18] and Chaboussant et al [40] for the effective coupling of the spins in the triangle, induced by interactions between these and the spins in the hexagons. Both groups found J 0 ≃ 2.4 K which gives a gap 3 2 J 0 ≃ 3.7 K. We also found that the tunnel splitting between the two doublets is ∆ 0 = 13 mK, in agreement with the ∼ 10 −2 K estimate [36]. This is an order of magnitude smaller than the estimates given by Chiorescu et al [28] (∼ 0.05 K) or Chaboussant et al (∼ 0.1 K).…”

Section: A Magnetizationsupporting

confidence: 89%

“…The lowest lying excited states form a quartet which is separated from the ground state doublets by ≈ 3.7 K. The splitting between the lowest energy multiplets from the rest of the spectrum has been found from EPR spectra to be ∼ 500 K [35]. Magnetic anisotropy leads to tunnel splittings between the two doublets, which are ∼ 10 −2 K [36], in contrast with the very small values for the other two molecules (∼ 10 −7 − 10 −11 K). There is no macroscopic quantum tunneling for V 15 according to the Kramers theorem [37], since the system has an odd number of S = 1 2 spins and the total spin is half-integer [38], giving a doubly degenerate ground state.…”

Section: V15mentioning

confidence: 97%

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Magnetic anisotropy in the molecular complexV15

Konstantinidis

Coffey

2002

Phys. Rev. B

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We apply degenerate perturbation theory to investigate the effects of magnetic anisotropy in the magnetic molecule V15. Magnetic anisotropy is introduced via Dzyaloshinskii-Moriya (DM) interaction in the full Hilbert space of the system. Our model provides an explanation for the rounding of transitions in the magnetization as a function of applied field at low temperature, from which an estimate for the DM interaction is found. We find that the calculated energy differences of the lowest energy states are consistent with the available data. Our model also offers a novel explanation for the hysteretic nature of the time-dependent magnetization data.

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Section: A Magnetizationsupporting

confidence: 89%

Section: V15mentioning

confidence: 97%

Magnetic anisotropy in the molecular complexV15

Konstantinidis

Coffey

2002

Phys. Rev. B

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“…the reference sample (the resonance frequency for NaVOy in this case, see [70] It is conceivable that this signal (with a small negative Knight shift which is only weakly temperature dependent) originates from the presence, in the samples, of a minority phase containing non-magnetic vanadium atoms.…”

Section: Discussion Of Results X ^mentioning

confidence: 99%

Structural, electronic, and magnetic properties of La[subscript x]Sr[subscript 1-x]VO3 (0 <=x <=1.0)

Mahajan

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“…Here we used the atomic-based 21 B HF = 260 T for Cu. Table 2 shows E F and Cu Knight shift (K th ) values obtained from this calculation, the latter made with the assumption that g s /g tot = 1 in eqn (1), and with g tot calculated per unit cell.…”

Section: Discussionmentioning

confidence: 99%