Author/Authors :
Nobukane، نويسنده , , H. and Inagaki، نويسنده , , K. and Ichimura، نويسنده , , K. and Yamaya، نويسنده , , K. and Takayanagi، نويسنده , , S. and Kawasaki، نويسنده , , I. and Tenya، نويسنده , , K. and Amitsuka، نويسنده , , H. and Konno، نويسنده , , K. and Asano، نويسنده , , Y. and Tanda، نويسنده , , S.، نويسنده ,
Abstract :
We observed an unconventional parity-violating vortex in single domain Sr2RuO4 single crystals using a transport measurement. The current–voltage characteristics of submicron Sr2RuO4 show that the induced voltage has anomalous components which are even functions of the bias current. The results may suggest that the vortex itself has a helical internal structure characterized by a Hopf invariant (a topological invariant). We also discuss that the hydrodynamics of such a helical vortex causes the parity violation to retain the topological invariant.
