Spin Hall magnetoresistance in paramagnetic NdGaO3
arXiv:2201.08685 · doi:10.1063/5.0152080
Abstract
In recent years, spin Hall magnetoresistance (SMR) has emerged as an efficient way to probe the spontaneous magnetization state in ordered magnetic systems, by electrical current. Less known is its versatility as a probe of materials that do not possess spontaneous magnetization such as in paramagnets. In this work, SMR is used to probe paramagnetic NdGaO3 (NGO), a rare earth oxide, possessing a sizable spin orbit interaction (L=6). NGO has not been investigated earlier for its efficiency in propagating spins. We have performed extensive temperature and angle dependent-magnetoresistance (ADMR) studies along dissimilar crystallographic axes in NGO, using platinum (Pt) as spin injector and detector and utilizing (inverse) spin Hall effect. We find a close correlation between the temperature dependence of the ADMR response with magnetization in NGO and a linear current bias dependence of the ADMR amplitudes. These are chacteristics of SMR effect in Pt/NGO, arising from the torque acting on localized moments in NGO and considering crystal field induced intermultiplet transitions with temperature. Control experiments on Pt/SrTiO3 and Pt/SiO2 devices were also carried out in order to validate the observed SMR response in Pt/NGO bilayer and to rule out magnetoresistive contributions from Pt.
References in corpus (21)
- Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
- Theory of spin Hall magnetoresistance
- Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
- Spin-Hall Magnetoresistance in Platinum on Yttrium Iron Garnet: Dependence on platinum thickness and in-plane/out-of-plane magnetization
- Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
- Hanle Magnetoresistance in Thin Metal Films with Strong Spin-Orbit Coupling
- Negative spin Hall magnetoresistance of Pt on the bulk easy-plane antiferromagnet NiO
- Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films
- Theory of spin Hall magnetoresistance (SMR) and related phenomena
- Spin-Hall magnetoresistance and spin Seebeck effect in spin-spiral and paramagnetic phases of multiferroic CoCr2O4 films
- Theory of Spin Hall Magnetoresistance from a Microscopic Perspective
- Efficient spin transport in a paramagnetic insulator
- Crystal field and magnetism of Pr and Nd ions in orthorhombic perovskites
- Spin Hall magnetoresistance as a probe for surface magnetization in Pt/CoFeO bilayers
- Paramagnetic spin Hall magnetoresistance
- Current direction anisotropy of the spin Hall magnetoresistance in nickel ferrite thin films with bulk-like magnetic properties
- Observation of magnetization surface textures of the van der Waals antiferromagnet FePS3 by spin Hall magnetoresistance
- Spin Hall magnetoresistance in heterostructures consisting of noncrystalline paramagnetic YIG and Pt
- Spin Seebeck effect in paramagnets and antiferromagnets at elevated temperatures
- Strain driven antiferromagnetic exchange interaction in SrMnO probed by phase shifted Spin Hall magnetoresistance
- Gate-Controlled Magnetoresistance of a Paramagnetic Insulator|Platinum Interface