title: Damping in yttrium iron garnet nanoscale films capped by platinum.
abstract: Strong damping enhancement in nm-thick yttrium iron garnet (YIG) films due to Pt capping layers was observed. This damping is substantially larger than the expected damping due to conventional spin pumping, is accompanied by a shift in the ferromagnetic resonance field, and can be suppressed by the use of a Cu spacer in between the YIG and Pt films. The data indicate that such damping may originate from the ferromagnetic ordering in Pt atomic layers near the YIG/Pt interface and the dynamic exchange coupling between the ordered Pt spins and the spins in the YIG film.
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Yiyan
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Houchen
authors.initials: H
authors.lastname: Chang
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Kabatek
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Young-Yeal
authors.initials: YY
authors.lastname: Song
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Zihui
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Jantz
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: William
authors.initials: W
authors.lastname: Schneider
authors.affiliation: Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
authors.forename: Mingzhong
authors.initials: M
authors.lastname: Wu
authors.affiliation: Physics Department, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Montoya
authors.affiliation: Physics Department, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Kardasz
authors.affiliation: Physics Department, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Heinrich
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Suzanne G E
authors.initials: SG
authors.lastname: te Velthuis
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Helmut
authors.initials: H
authors.lastname: Schultheiss
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Axel
authors.initials: A
authors.lastname: Hoffmann