AVS 64th International Symposium & Exhibition
    Magnetic Interfaces and Nanostructures Division Tuesday Sessions
       Session MI+2D+AC+SA+SS-TuM

Paper MI+2D+AC+SA+SS-TuM6
XMCD Quest for Magnetic Proximity Effect in Ferromagnetic Insulator/Non-Magnetic Metal Interfaces

Tuesday, October 31, 2017, 9:40 am, Room 11

Session: Novel Magnetic Order at Interfaces
Presenter: Andrei Rogalev, European Synchrotron Radiation Facility, France
Authors: A. Rogalev, European Synchrotron Radiation Facility, France
F. Wilhelm, European Synchrotron Radiation Facility, France
Correspondent: Click to Email
The rise of spin current physics together with enormous technological advances to engineer layered structures with tailoredspin-orbit interactions have placed 4d and 5d transition metals at the heart of the emerging fields of spinorbitronics, magnonics and caloritronics. In this context, magnetic properties at the interfaces between a ferromagnetic materials and non magnetic metals with large spin-orbit coupling play a central role. Some of those heavy metals like Pt or Pd are known to exhibit so-called magnetic proximity effect, i.e. they acquire interfacial induced magnetic moments whenever they are in contact with 3d metallic ferromagnets. However, when they are grown on magnetic insulators, e.g. yttrium iron garnet (YIG), whether induced magnetic moments are indeed ubiquitous is still an open question as contradictory reports have been published. This is indeed the key question for correct interpretation of the spin Hall magnetoresistance or the newly discovered unidirectional magnetoresistance phenomena and, in more general,to understand mechanisms of pure spin currents generation. To answer this question and to unravel a possible role of magnetic proximity effects at ferromagnetic/non-magneticinterfaces, X-ray magnetic circular dichroism (XMCD) spectroscopy appears to be the method of choice due to its element selectivity and high sensitivity. In this talk,we present a thorough review of XMCD experiments aimed at detection of magnetic proximity effect in a variety of ferromagnetic insulator/non-magnetic metal interfaces.