Spin Hall magnetoresistance at Pt/CoFe{sub 2}O{sub 4} interfaces and texture effects

Journal Article · Mon Oct 06 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4897544· OSTI ID:22350856

Isasa, Miren; Bedoya-Pinto, Amilcar; Vélez, Saül ^[1]; Golmar, Federico ^[1]; Sánchez, Florencio; Fontcuberta, Josep ^[2]; Hueso, Luis E.; Casanova, Fèlix ^[1]

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1. CIC nanoGUNE, 20018 Donostia-San Sebastian, Basque Country (Spain)
2. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia (Spain)

We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe{sub 2}O{sub 4} (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR). The magnitude of the SMR depends on the interface preparation conditions, being optimal when the Pt/CFO samples are prepared in situ, in a single process. The spin-mixing interface conductance, the key parameter governing SMR and other relevant spin-dependent phenomena, such as spin pumping or spin Seebeck effect, is found to be different depending on the crystallographic orientation of CFO, highlighting the role of the composition and density of magnetic ions at the interface on spin mixing.

• OSTI ID: 22350856
• Journal Information: Applied Physics Letters, Vol. 105, Issue 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT COMPOUNDS
COBALT OXIDES
CRYSTALLOGRAPHY
DENSITY
EPITAXY
FERRIMAGNETIC MATERIALS
FERRITES
FILMS
INTERFACES
MAGNETORESISTANCE
MIXING
ORIENTATION
PLATINUM
SEEBECK EFFECT
SPIN
TEXTURE