Physics – Condensed Matter – Superconductivity
Scientific paper
2000-01-05
Physics
Condensed Matter
Superconductivity
11 pages, 4 figures, submitted to PRL
Scientific paper
From magnetisation measurements we provide evidence that the ferromagnetic superconductor RuSr$_{2}$GdCu$_{2}$O$_{8}$ with \QTR{it}{T}$_{c}$=45 K and \QTR{it}{T}$_{M}$=137 K exhibits a sizeable diamagnetic signal at low temperature (\QTR{it}{T}<\QTR{it}{T}$^{\QTR{it}{ms}}$=30 K) and low magnetic field (\QTR{it}{H}$^{ext}$<30 Oe), corresponding to a bulk Meissner-phase. At intermediate temperatures, \QTR{it}{T}$^{\QTR{it}{ms}}$<\QTR{it}{T}<\QTR{it}{T}$_{c}$, a spontaneous vortex phase forms which is characterized by unique thermal hysteresis effects. We argue that a recent negative report [C.W. Chu et al., cond-mat/9910056] regarding the Meissner-effect in Ru-1212 can be explained by impurity scattering or grain size effects.
Bernhard Christian
Brücher E.
Kremer Reinhard K.
Tallon Jeffery L.
No associations
LandOfFree
Evidence for a transition from a bulk Meissner-state to a spontaneous vortex phase in RuSr$_2$GdCu$_2$O$_8$ from DC magnetisation measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for a transition from a bulk Meissner-state to a spontaneous vortex phase in RuSr$_2$GdCu$_2$O$_8$ from DC magnetisation measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for a transition from a bulk Meissner-state to a spontaneous vortex phase in RuSr$_2$GdCu$_2$O$_8$ from DC magnetisation measurements will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-90166