Electrical detection of spiral spin structures in Pt|Cu_2OSeO_3 heterostructures

Abstract

The interaction between the itinerant spins in metals and localized spins in magnetic insulators thus far has only been explored in collinear spin systems, such as garnets. Here, we report the spin-Hall magnetoresistance (SMR) sensitive to the surface magnetization of the spin-spiral material, Cu_2OSeO_3. We experimentally demonstrate that the angular dependence of the SMR changes drastically at the transition between the helical spiral and the conical spiral phases. Furthermore, the sign and magnitude of the SMR in the conical spiral state are controlled by the cone angle. We show that this complex behaviour can be qualitatively explained within the SMR theory initially developed for collinear magnets. In addition, we studied the spin Seebeck effect (SSE), which is sensitive to the bulk magnetization. It originates from the conversion of thermally excited low-energy spin waves in the magnet, known as magnons, into the spin current in the adjacent metal contact (Pt). The SSE displays unconventional behavior where not only the magnitude but also the phase of the SSE vary with the applied magnetic field.

References in corpus (26)

• Spin Caloritronics
• Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
• Theory of spin Hall magnetoresistance
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Antiferromagnetic spin Seebeck Effect
• Thermal generation of spin current in an antiferromagnet
• Spin-Hall Magnetoresistance in Platinum on Yttrium Iron Garnet: Dependence on platinum thickness and in-plane/out-of-plane magnetization
• Spin transfer torque on magnetic insulators
• Determination of the origin of the spin Seebeck effect - bulk vs. interface effects
• Thermal spin pumping and magnon-phonon-mediated spin-Seebeck effect
• Magnetoelectric coupling in the cubic ferrimagnet Cu2OSeO3
• Electric-field control of the skyrmion lattice in Cu2OSeO3
• The quantum origins of skyrmions and half-skyrmions in Cu2OSeO3
• Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects
• Exchange magnetic field torques in YIG/Pt bilayers observed by the spin-Hall magnetoresistance
• Current heating induced spin Seebeck effect
• Spin Hall Magnetoresistance in a Canted Ferrimagnet
• Simultaneous detection of the spin-Hall magnetoresistance and the spin-Seebeck effect in Platinum and Tantalum on Yttrium Iron Garnet
• Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect at High Temperatures
• Ferrimagnetism of the magnetoelectric compound Cu${}_2$OSeO${}_3$ probed by ${}^{77}$Se NMR
• Spin-Hall magnetoresistance and spin Seebeck effect in spin-spiral and paramagnetic phases of multiferroic CoCr2O4 films
• Surface sensitivity of the spin Seebeck effect
• Current-induced spin torque resonance of a magnetic insulator
• Sub-microsecond fast temporal evolution of the spin Seebeck effect
• Spin-transfer torque based damping control of parametrically excited spin waves in a magnetic insulator
• Transverse field muon-spin rotation signature of the skyrmion lattice phase in Cu2OSeO3

Cited by in corpus (22)

• Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
• Negative spin Hall magnetoresistance of Pt on the bulk easy-plane antiferromagnet NiO
• New magnetic phase of the chiral skyrmion material Cu2OSeO3
• Evolution of the Spin Hall Magnetoresistance in Cr${}_2$O${}_3$/Pt bilayers close to the Néel temperature
• Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
• Spin Hall magnetoresistance in antiferromagnetic insulators
• Strong interfacial exchange field in a heavy metal/ferromagnetic insulator system determined by spin Hall magnetoresistance
• Helimagnon resonances in an intrinsic chiral magnonic crystal
• Ballistic magnon heat conduction and possible Poiseuille flow in the helimagnetic insulator Cu${}_2$OSeO${}_3$
• Tunable and Enhanced Rashba Spin-Orbit Coupling in Iridate-Manganite Heterostructures
• Spin-Hall magnetoresistance in a low-dimensional magnetic insulator
• Magnetic order of Dy${}^{3+}$ and Fe${}^{3+}$ moments in antiferromagnetic DyFeO${}_3$ probed by spin Hall magnetoresistance and spin Seebeck effect
• Current direction anisotropy of the spin Hall magnetoresistance in nickel ferrite thin films with bulk-like magnetic properties
• All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
• Field-induced reorientation of helimagnetic order in Cu${}_2$OSeO${}_3$ probed by magnetic force microscopy
• Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ and inverted Y${}_3$Fe${}_5$O${}_{12}$/Pt bilayers
• All-electrical detection of skyrmion lattice state and chiral surface twists
• Insight into the structural and magnetotransport properties of epitaxial heterostructures $\alpha$-Fe${}_2$O${}_3$-Pt(111): Role of the reversed layer sequence
• Probing magnetic anisotropy and spin-reorientation transition in 3D antiferromagnet, Ho${}_{0.5}$Dy${}_{0.5}$FeO${}_3|$Pt using spin Hall magnetoresistance
• Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate