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The Temperature evolution of the magnetic correlations in pure and diluted spin ice Ho$$_{2-x}$$Y$$_{x}$$Ti$$_{2}$$O$$_{7}$$

Chang, L.-J.; Su, Y.*; Kao, Y.-J.*; Chou, Y. Z.*; Kakurai, Kazuhisa; Mittal, R.*; Schneider, H.*; Br$"u$ckel, T.*; Balakrishnan, G.*; Lees, M. R.*

Diffuse polarized neutron scattering studies have been carried out on single crystals of pyrochlore spin ice Ho$$_{2-x}$$Y$$_{x}$$Ti$$_{2}$$O$$_{7}$$ (x = 0, 0.3, and 1) to investigate the effects of doping and anisotropy on spin correlations in the system. For all the samples studied the spin flip (SF) diffuse scattering (i.e. the in-plane component) reveals that the spin correlations can be described using a nearest-neighbour spin ice model (NNSM) at higher temperatures ($$T$$ = 3.6 K) and a dipolar spin ice model (DSM) as the temperature is reduced ($$T$$ = 30 mK). In this paper, we focus on the experimental results of the highly doped spin ice HoYTi$$_{2}$$O$$_{7}$$ and compare our results with pure spin ice Ho$$_{2}$$Ti$$_{2}$$O$$_{7}$$.



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Category:Physics, Condensed Matter



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