Incommensurate antiferromagnetic order in the quantum chain compound LiCuVO4

Gibson, B. J.; Kremer, R. K.; Prokofiev, A.; Aßmus, W.; McIntyre, Garry J.

doi:10.1016/j.physb.2004.03.064

Cited by 143 publications

(159 citation statements)

References 14 publications

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“…• known experimentally [2]. Thus, the measured φ points clearly to a strong coupling regime in contrast to opposite statements in Refs.…”

Section: P-3contrasting

confidence: 63%

The strength of frustration and quantum fluctuations in LiVCuO ₄

Nishimoto¹,

Drechsler²,

Kuzian³

et al. 2012

EPL

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-We present an empirical and microscopical analysis of the main in-chain exchange constants of the edge-shared frustratrated chain cuprate LiVCuO4= LiCuVO4 with a ferromagnetic nearest neighbour coupling which clearly exceeds the antiferromagnetic (AFM) next-nearest neighbour exchange J2. The measured saturation field is significantly affected by a weak 3D AFM interchain coupling leaving room for a possible Bose-Einstein condensation for several T below. The obtained exchange parameters are in agreement with the results for a realistic five-band extended Hubbard Cu 3d O 2p model, LSDA+U predictions as well as with inelastic neutron and magnetization data. The single chain frustration rate α = J2/|J1| ≈ 0.75, including all error bars, is definitely smaller than 1.0 which correspond to strongly coupled interpenetrating AFM Heisenberg chains in contrast with opposite statements in the literature. A proper account of strong quantum fluctuations and frustration is necessary for a correct assignment of the exchange integrals. which cannot be achieved by a simple renormalization of J2 from spin-wave theory.

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“…• known experimentally [2]. Thus, the measured φ points clearly to a strong coupling regime in contrast to opposite statements in Refs.…”

Section: P-3contrasting

confidence: 63%

The strength of frustration and quantum fluctuations in LiVCuO ₄

Nishimoto¹,

Drechsler²,

Kuzian³

et al. 2012

EPL

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“…18 The spin structure of the ordered state has recently been identified as being incommensurate, using neutron scattering. 22,23 For T ജ 10 K, the spin-lattice relaxation rates 1 / T 1 ͑T͒ increase almost linearly with T for all measured nuclei and orientations. We recall here that in the spectra for 7 Li H ʈ b, two lines were observed: one for the main and one for the impurity signal, both having different relaxation rates 1 / T 1 ͑T͒.…”

Section: Amentioning

confidence: 82%

“…[16][17][18][19][20] This material gained some interest for its prospective use in rechargeable batteries 15 which are considered important for various applications. As single-crystalline material became available, 21 its properties have been studied by investigating the temperature T dependence of the magnetic susceptibility ͑T͒, magnetic structure in the ordered state using neutron diffraction 22 in combination with band-structure calculations, 23 EPR, 17 heat transport, and thermal conductivity 24,25 as well as lattice dynamics by infrared spectroscopy. 26 Compared to Sr 2 CuO 3 , LiCuVO 4 has a much lower exchange coupling constant J / k B Ϸ 42 K and its properties seem prototypical for a class of 1D HAFs together with CuGeO 3 and newly reported phosphate compounds.…”

Section: Introductionmentioning

confidence: 99%

NMR study of lineshifts and relaxation rates of the one-dimensional antiferromagnetLiCuVO4

et al. 2006

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NMR measurements were performed on single-crystalline samples of the one-dimensional Heisenberg antiferromagnet ͑1D HAF͒ LiCuVO 4 . We investigated 7 Li and 51 V NMR spectra, deduced the respective lineshifts K͑T͒, spin-lattice relaxation rates 1 / T 1 , and spin-spin relaxation rates 1 / T 2 and 1 / T 2G . The results are compared to theoretical predictions for the relaxation rates 1 / T 1 ͑T͒ and 1 / T 2G ͑T͒ deduced from the dynamic susceptibility ͑q , ͒ of a 1D HAF spin chain as proposed by Sachdev ͓Phys. Rev. B 50, 13006 ͑1994͔͒. We document a correspondence between the anisotropic relaxation rates derived from electron paramagnetic resonance linewidth ⌬H͑T͒ and nuclear magnetic resonance 1 / T 1 ͑T͒, respectively, the former being well described in the framework of symmetric anisotropic exchange interactions for LiCuVO 4 by Krug von Nidda et al. ͓Phys. Rev. B 65, 134445 ͑2002͔͒.

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“…11 In case of LiCuVO 4 , P a is found in ab-spiral spin phase at 0 T, consistent with the IDM model. 16,17 However, the observation of P c, assigned to the bc-spiral spin phase, 18 was not reproduced by another group. 19 Since both compounds frequently contains Li-Cu intersubstitution due to their close ionic radii, Moskvin et al have claimed that the observed FE and ME natures stem purely from exchange striction and crystallographic defects, not from the spin-orbit interaction (or the IDM scheme).…”

Section: Introductionmentioning

confidence: 93%

Cupric chlorideCuCl2as anS=12chain multiferroic

et al. 2010

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Magnetoelectric properties were investigated for an S = 1/2 chain antiferromagnet CuCl2, which turns out to be the first example of non-chalcogen based spiral-spin induced multiferroics. Upon the onset of helimagnetic order propagating along the b-axis under zero magnetic field (H), we found emergence of ferroelectric polarization along the c-axis. Application of H along the b-axis leads to spin-flop transition coupled with drastic suppression of ferroelectricity, and rotation of H around the b-axis induces the rotation of spin-spiral plane and associated polarization direction. These behaviors are explained well within the framework of the inverse Dzyaloshinskii-Moriya model, suggesting the robustness of this magnetoelectric coupling mechanism even under the strong quantum fluctuation.

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Incommensurate antiferromagnetic order in the quantum chain compound LiCuVO4

Cited by 143 publications

References 14 publications

The strength of frustration and quantum fluctuations in LiVCuO ₄

The strength of frustration and quantum fluctuations in LiVCuO ₄

NMR study of lineshifts and relaxation rates of the one-dimensional antiferromagnetLiCuVO4

Cupric chlorideCuCl2as anS=12chain multiferroic

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Incommensurate antiferromagnetic order in the quantum chain compound LiCuVO4

Cited by 143 publications

References 14 publications

The strength of frustration and quantum fluctuations in LiVCuO 4

The strength of frustration and quantum fluctuations in LiVCuO 4

NMR study of lineshifts and relaxation rates of the one-dimensional antiferromagnetLiCuVO4

Cupric chlorideCuCl2as anS=12chain multiferroic

Contact Info

Product

Resources

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The strength of frustration and quantum fluctuations in LiVCuO ₄

The strength of frustration and quantum fluctuations in LiVCuO ₄