%0 Journal Article
%A Chang, L. J.
%A Su, Y.
%A Kao, Y.-J.
%A Chou, Y. Z.
%A Mittal, R.
%A Schneider, H.
%A Brückel, T.
%A Balakrishnan, G.
%A Lees, M. R.
%T Magnetic correlations in the spin ice Ho2-xYxTi2O7 as revealed by neutron polarization analysis
%J Physical review / B
%V 82
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-11952
%P 172403
%D 2010
%Z We thank W. Schweika, P. Holdsworth, and B. Gaulin for valuable discussions, and M. Gingras and Y. Endoh for critical reading of the manuscript. This work was supported in Taiwan by Grants No. NSC 96-2739-M-213-001 and No. NSC 99-2112-M-007-020 (L.J.C.), and Grant No. NSC 97-2628-M-002-011-MY3 and NTU under Grants No. 98R0066-65 and No. 98R0066-68 (Y.Z.C. and Y.J.K.). Artur Glavic is acknowledged for implementing the DNSPLOT software package.
%X We present single-crystal magnetic diffuse neutron-scattering measurements with polarization analysis on the spin ice Ho2-xYxTi2O7 (x=0, 0.3, and 1). At 2 K, the spin-flip scattering patterns are typical of a nearest-neighbor spin ice and the effects of Y doping are seen in the widths of the pinch points. At low temperature, the spin-flip patterns are characteristic of a dipolar spin ice and are unaffected by Y doping. In the nonspin-flip channel, we observe the signature of strong antiferromagnetic correlations at the same temperature as the dipolar spin-ice correlations appear in the spin-flip channel. These experimental observations have been well reproduced by our Monte Carlo simulations.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000283840800001
%R 19.1103/PhysRevB.82.172403
%U https://juser.fz-juelich.de/record/11952