Phase diagram of diluted Ising ferromagnet LiHoxY1-xF4

We present a systematic study of the phase diagram of LiHoxY1-xF4 (0.25 <= x <= 1) Ising ferromagnets obtained from neutron scattering measurements and mean-field calculations. We show that while the thermal phase transition decreases linearly with dilution, as predicted by mean-field theory, the critical transverse field at the quantum critical point is suppressed much faster. This behavior is related to competition between off-diagonal dipolar coupling and quantum fluctuations that are tuned by doping and applied field, respectively. In this paper, we quantify the deviation of the experimental results from mean-field predictions, with the aim that this analysis can be used in future theoretical efforts towards a quantitative description.


Published in:
Physical Review B, 94, 17, 174443
Year:
2016
Publisher:
College Pk, Amer Physical Soc
ISSN:
2469-9950
Laboratories:




 Record created 2017-01-24, last modified 2018-09-13

Publisher's version:
Download fulltextPDF
External link:
Download fulltextURL
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)