Non-quasiparticle states in Co$_2$MnSi evidenced through magnetic tunnel junction spectroscopy measurements
L. Chioncel, Y. Sakuraba, E. Arrigoni, M.I. Katsnelson, M. Oogane, Y., Ando, T. Miyazaki, E. Burzo, A.I. Lichtenstein
TL;DR
This study combines theoretical analysis and tunneling spectroscopy to confirm the presence of non-quasiparticle states in Co$_2$MnSi, revealing their significant role in finite-temperature spin polarization.
Contribution
It provides the first combined theoretical and experimental evidence of non-quasiparticle states in Co$_2$MnSi affecting spin polarization.
Findings
Confirmation of non-quasiparticle states in Co$_2$MnSi
Non-quasiparticle states contribute to finite-temperature spin polarization
Experimental spectroscopy aligns with theoretical density of states analysis
Abstract
We investigate the effects of electronic correlations in the full-Heusler CoMnSi, by combining a theoretical analysis of the spin-resolved density of states with tunneling-conductance spectroscopy measurements using CoMnSi as electrode. Both experimental and theoretical results confirm the existence of so-called non-quasiparticle states and their crucial contribution to the finite-temperature spin polarisation in this material.
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.