Spin Transport through Heavy Metal/Magnetic Insulator Interfaces

CFM Seminars

Sara Catalano
Auditorium: Centro de Fisica de Materiales
Maxim Ilyn
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Spin Transport through Heavy Metal/Magnetic Insulator Interfaces

The ability to control the spin degree of freedom in condensed matter systems has extended the capability for storing and processing information. In this talk I will give a brief introduction to spintronic, reviewing the main achievements in the field and the present challenges. In this context, I will highlight the role of heavy metal (HM)/magnetic insulator (MI) interfaces as a platform for studying spin-based signals in two exemplifying experiments that were carried out in the Nanodevices group at CIC nanoGUNE.
First, I will discuss the Spin Hall Magnetoresistance (SMR) effect in HM/MI heterostructures and, in particular, the case of Pt/ van der Waals magnetic compounds interfaces. I will show recent measurements, pointing out to the importance of the structural details of the heavy metal/magnetic insulator interface in the analysis of SMR signals [1].
Second, I will present our latest characterization of devices comprising Pt/EuS interfaces. We demonstrate the propagation of magnon spin currents in EuS evaporated films by means of the Spin Seebeck Effect, providing a thorough characterization of the spin transport properties of such films [2,3].
These experimental findings extend the current understanding of spin transport in HM/MI based heterostructures and pave the way to further advances in the field. I will briefly discuss future perspectives to be explored at the Materials for Quantum Technology research line in MPC.


1. Catalano et al., ACS Appl. Mater. and Interfaces 2022, 14, 6, 8598-8604
2. Gomez-Perez et al., Nano Letters 2020, 20, 9, 6815-6823
3. Xochitl Aguilar-Pujol, Catalano et al., submitted 2023