Incommensurate spin-density-wave order in quasi-one-dimensional metallic antiferromagnet ${\text{NaV}}_{2}{\text{O}}_{4}$

Rapid Communication

Incommensurate spin-density-wave order in quasi-one-dimensional metallic antiferromagnet ${NaV}_{2} O_{4}$

Hiroshi Nozaki, Jun Sugiyama, Martin Månsson, Masashi Harada, Vladimir Pomjakushin, Vadim Sikolenko, Antonio Cervellino, Bertrand Roessli, and Hiroya Sakurai

Phys. Rev. B 81, 100410(R) – Published 23 March 2010

Abstract

To clarify the reason for the coexistence of long-range antiferromagnetic order and metallic conductivity for ${NaV}_{2} O_{4}$ , in which the V ions form quasi-one-dimensional zigzag chains along the $b$ axis, we have performed a neutron-scattering experiment using a powder sample down to 20 K. The analysis of the magnetic powder diffractogram below $T_{N} = 140 K$ demonstrates the formation of an incommensurate spin-density-wave order with $k = (0, 0.191, 0)$ ; the ordered moment was estimated as $(0, 0, 0.77 μ_{B})$ at 20 K.

Figure
Figure
Figure
Figure
Figure

Received 24 February 2010

DOI:https://doi.org/10.1103/PhysRevB.81.100410

Authors & Affiliations

Hiroshi Nozaki ^1,*, Jun Sugiyama ¹, Martin Månsson ², Masashi Harada ¹, Vladimir Pomjakushin ², Vadim Sikolenko ², Antonio Cervellino ³, Bertrand Roessli ², and Hiroya Sakurai ⁴

¹Toyota Central Research and Development Laboratories Inc., Nagakute, Aichi 480-1192, Japan
²Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
³Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
⁴National Institute for Materials Science, Namiki, Tsukuba, Ibaraki 305-0044, Japan

^*e1236@mosk.tytlabs.co.jp

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 81, Iss. 10 — 1 March 2010

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Authorization Required

Other Options

Images

Figure 1
(Color online) Crystal structure of ${NaV}_{2} O_{4}$ . The $V_{2} O_{4}$ double chains, i.e., zigzag chains are formed by a network of edge-sharing ${VO}_{6}$ octahedra align along the $b$ axis so as to make an irregular hexagonal 1D channel. The Na ions are located in the center of the 1D channel.Reuse & Permissions
Figure 2
(Color online) SR-XRD pattern at $T = 150 K$ and fit result by Rietveld analysis where the reliability $(R)$ factor was minimized down to 4.96%. The diffraction peaks from the $V_{2} O_{3}$ phase are also observed. However, since its mass fraction is estimated as 1.3%, the $V_{2} O_{3}$ phase is eventually ignorable for the present structural and magnetic-structural analyses.Reuse & Permissions
Figure 3
(Color online) $T$ dependences of lattice parameters and unit-cell volume for ${NaV}_{2} O_{4}$ obtained by Rietveld analysis. Gray (red online) and black symbols denotes the data taken using He-flow cryostat and liquid $N_{2}$ cryojet, respectively.Reuse & Permissions
Figure 4
(Color online) (a) NPD patterns obtained at 20 and 150 K, and their difference. At least, four magnetic Bragg peaks are clearly observed and they are indexed by an incommensurate propagation vector with $k = (0, 0.191, 0)$ . (b) Fit result for the NPD pattern obtained at 20 K using a SDW model along the $b$ axis $(Γ_{3, S})$ . (c) $T$ dependence of the normalized square root of the intensity of the magnetic Bragg peak $0 q_{y} 0$ . The $μ^{+} SR$ result (muon-spin precession frequency $f_{μ}$ in ZF) is also plotted for comparison; below 120 K, the second highest $f_{μ}$ among the four $f_{μ}$ ’s is plotted, as it is continuous to $f_{μ}$ above 120 K. The solid line in (c) represents the $T$ dependence of the BCS gap energy.Reuse & Permissions
Figure 5
(Color online) Magnetic structure of ${NaV}_{2} O_{4}$ at 20 K. Small (red) and large (blue) circles correspond to V ions at different sites ( $V_{1}$ and $V_{2}$ ). Arrows indicate the direction and magnitude of the V moment. Na and O atoms are not shown for clarity. The average value of the ordered magnetic moment is estimated as $0.49 μ_{B} / V$ by integration of Eq. (1) in the whole lattices, although the effective magnetic moment $(μ_{eff})$ was reported as $1.99 - 2.70 μ_{B} / V$ (Ref. 4).Reuse & Permissions

Physical Review B

covering condensed matter and materials physics

Incommensurate spin-density-wave order in quasi-one-dimensional metallic antiferromagnet ${NaV}_{2} O_{4}$

Hiroshi Nozaki, Jun Sugiyama, Martin Månsson, Masashi Harada, Vladimir Pomjakushin, Vadim Sikolenko, Antonio Cervellino, Bertrand Roessli, and Hiroya Sakurai

Phys. Rev. B 81, 100410(R) – Published 23 March 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Physical Review B

covering condensed matter and materials physics

Incommensurate spin-density-wave order in quasi-one-dimensional metallic antiferromagnet NaV2O4

Hiroshi Nozaki, Jun Sugiyama, Martin Månsson, Masashi Harada, Vladimir Pomjakushin, Vadim Sikolenko, Antonio Cervellino, Bertrand Roessli, and Hiroya Sakurai

Phys. Rev. B 81, 100410(R) – Published 23 March 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Incommensurate spin-density-wave order in quasi-one-dimensional metallic antiferromagnet ${NaV}_{2} O_{4}$