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Excess current in superconducting Sr2RuO4

Frank Laube ; Gernot Goll ; Matthias Eschrig ; Mikael Fogelström (Institutionen för mikroteknologi och nanovetenskap, Tillämpad kvantfysik) ; Ralph Werner
Physical Review B Vol. 69 (2004), 1, p. 14516.
[Artikel, refereegranskad vetenskaplig]

We present results from point-contact measurements on Sr2RuO4 that show a linear dependence of the excess current as a function of temperature and applied magnetic fields over a surprisingly wide range of the phase diagram. We propose an explanation of this finding in terms of a p-wave triplet-pairing state with coupling to a low-energy fluctuation mode. Within this model we obtain a quantitative description of the temperature dependence of the excess current. The impact of surface effects on order parameter and excess current is addressed.

Denna post skapades 2006-08-29. Senast ändrad 2017-10-03.
CPL Pubid: 290


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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Tillämpad kvantfysik



Chalmers infrastruktur