Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1999-12-13
Physics
Condensed Matter
Disordered Systems and Neural Networks
Comment on PRL 83, 1854 (1999). 1 PostScript figure included. Submitted to Physical Review Letters. Contact: gingras@gandalf.u
Scientific paper
In this Comment we argue that Ho$_2$Ti$_2$O$_7$ does not exhibit a transition to a partially ordered state unlike what is argued in PRL 83, 1854 (1999), that it exhibits spin ice behavior, and that the experimental specific heat data by Siddharthan et al. can be accounted for in terms of a "dipolar spin ice" model by including an expected contibution from the nuclear Ho spins to the appropriate long-range treatment of the dipole-dipole interactions.
Bramwell Steven. T.
den Hertog Byron C.
Gingras Michel J. -P.
Harris Mark J.
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