Journal Article

IMPULSE-2016-00191

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Collinear order in the frustrated three-dimensional spin − 1/2 antiferromagnet Li$_2$CuW$_2$O$_8$

Ranjith, K. M. ; Nath, R. (Corresponding author) ; Skoulatos, M.MLZ* ; Keller, L. ; Kasinathan, D. ; Skourski, Y. ; Tsirlin, A. A. (Corresponding author)

2015
Inst. Woodbury, NY

Please use a persistent id in citations: doi:10.1103/PhysRevB.92.094426

Abstract: Magnetic frustration in three dimensions (3D) manifests itself in the spin−12 insulator Li2CuW2O8. Density-functional band-structure calculations reveal a peculiar spin lattice built of triangular planes with frustrated interplane couplings. The saturation field of 29 T contrasts with the susceptibility maximum at 8.5 K and a relatively low Néel temperature TN≃3.9K. Magnetic order below TN is collinear with the propagation vector (0,12,0) and an ordered moment of 0.65(4) μB according to neutron diffraction data. This reduced ordered moment together with the low maximum of the magnetic specific heat (Cmax/R≃0.35) pinpoint strong magnetic frustration in 3D. Collinear magnetic order suggests that quantum fluctuations play a crucial role in this system, where a noncollinear spiral state would be stabilized classically.

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Materials Science (2nd) ; Magnetism (2nd)

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Contributing Institute(s):

1. E21
2. MIRA
3. PANDA

Experiment(s):

1. Measurement at external facility

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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