Ferromagnetism in YbCu2Si2 at high pressure

Details Ferromagnetism in YbCu2Si2 at high pressure Ferromagnetism in YbCu2Si2 at high pressure

2011-10-06

arxiv.org/abs/1110.1278v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figues, accepted at Phys. Rev. B

Scientific paper

We demonstrate from detailed ac-susceptibility and calorimetry studies under hydrostatic pressure that YbCu2Si2 probably orders ferromagnetically at high pressure. The (p,H,T) phase diagram, shows that the transition temperature increases with pressure, but also with an applied magnetic field. We suggest that many ytterbium systems may show a trend towards ferromagnetism and we discuss the possible reasons for this. We also examine the implications, including the potential of YbCu2Si2 and other Yb compounds for further studies of the rich physical properties that may occur near a ferromagnetic critical point.

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