Imaging of lateral spin valves with soft X-ray microscopy
O. Mosendz, G. Mihailovic, J. E. Pearson, P. Fischer, M.-Y. Im, S. D., Bader, A. Hoffmann
TL;DR
This study used high-resolution soft X-ray microscopy with XMCD to image spin accumulation in Co/Cu lateral spin valves, revealing no magnetic contrast at the Cu edge despite electrical detection of spin accumulation.
Contribution
It demonstrates the limitations of soft X-ray microscopy with XMCD in directly imaging spin accumulation in Cu at the L$_3$ edge.
Findings
No magnetic XMCD contrast at Cu L$_3$ edge.
Electrical measurements confirmed spin accumulation in Cu.
Illumination did not affect spin signals.
Abstract
We investigated Co/Cu lateral spin valves by means of high-resolution transmission soft x-ray microscopy with magnetic contrast that utilizes x-ray magnetic circular dichroism (XMCD). No magnetic XMCD contrast was observed at the Cu L absorption edge, which should directly image the spin accumulation in Cu. Although electrical transport measurements in a non-local geometry clearly detected the spin accumulation in Cu, which remained unchanged during illumination with circular polarized x-rays at the Co and Cu L absorption edges.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.