Using the point-contact Andreev reflection (PCAR) technique, we have performed spin polarization measurements in a polycrystalline SrRuO3 to study the difference of the spin polarization between the ballistic and diffusive transport samples. PCAR spectra were measured with Nb tips for T = 4.2 K with changing the contact area mechanically. The results were well fitted by the modified Blonder-Tinkham-Klapwijk (mBTK) model. We estimate the spin polarization P ≈ 0.59, which is slightly larger than that of a single crystal film with P ≈ 0.51 due to the change of transport property.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - Apr 6 2017|
|Event||18th International Conference on Strongly Correlated Electron Systems, SCES 2016 - Hangzhou, China|
Duration: May 9 2016 → May 13 2016
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)