Anomalous transport through the p-wave superconducting channel in the 3-K phase of Sr2rRuO4.
Using microfabrication techniques, we extracted individual channels of 3-kelvin (3-K) phase superconductivity in Sr2RuO4-Ru eutectic systems and confirmed odd-parity superconductivity in the 3-K phase, similar to pure Sr2RuO4. Unusual hysteresis in the differential resistance-current and voltage-current characteristics observed below 2 K indicates the internal degrees of freedom of the superconducting state. A possible origin of the hysteresis is current-induced chiral-domain-wall motion due to the chiral p-wave state.
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan.
Hiroshi
H
Kambara
Satoshi
S
Kashiwaya
Hiroshi
H
Yaguchi
Yasuhiro
Y
Asano
Yukio
Y
Tanaka
Yoshiteru
Y
Maeno