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The spin-orbit field and interfacial exchange field are two major interface phenomena, and the detection and manipulation of these fields can enable a variety of nanoscale spintronics devices. Optimizing the interfacial exchange field,…

Mesoscale and Nanoscale Physics · Physics 2025-06-24 Prasanta Muduli , Naëmi Leo , Mingran Xu , Zheng Zhu , Jorge Puebla , Christian Ortiz , Hironari Isshiki , YoshiChika Otani

We observe an unusual behavior of the spin Hall magnetoresistance (SMR) measured in a Pt ultra-thin film deposited on a ferromagnetic insulator, which is a tensile-strained LaCoO3 (LCO) thin film with the Curie temperature Tc=85K. The SMR…

Diluted magnetic semiconductors (DMS) have attracted significant attention for their potential in spintronic applications. Particularly, magnetically-doped GaN is highly attractive due to its high relevance for the CMOS industry and the…

Antiferromagnetic materials promise improved performance for spintronic applications, as they are robust against external magnetic field perturbations and allow for faster magnetization dynamics compared to ferromagnets. The direct…

The effective field torque of an yttrium-iron-garnet film on the spin accumulation in an attached Pt film is measured by the spin-Hall magnetoresistance (SMR). As a result, the magnetization direction of a ferromagnetic insulating layer can…

Mesoscale and Nanoscale Physics · Physics 2014-10-03 N. Vlietstra , J. Shan , V. Castel , J. Ben Youssef , G. E. W. Bauer , B. J. van Wees

We study the temperature dependence of spin Hall magnetoresistance (SMR) in antiferromagnetic insulator (AFI)/metal bilayer systems. We calculate the amplitude of the SMR signal by using a quantum Monte Carlo simulation and examine how the…

Mesoscale and Nanoscale Physics · Physics 2023-03-08 Takuto Ishikawa , Mamoru Matsuo , Takeo Kato

Spin Hall magnetoresistance (SMR) refers to a resistance change in a metallic film reflecting the magnetization direction of a magnet attached to the film. The mechanism of this phenomenon is spin exchange between conduction-electron spins…

At the interface between a nonmagnetic metal (NM) and a ferromagnetic insulator (FI) spin current can interact with the magnetization, leading to a modulation of the spin current. The interfacial exchange field at these FI-NM interfaces can…

Mesoscale and Nanoscale Physics · Physics 2018-07-20 P. K. Muduli , M. Kimata , Y. Omori , T. Wakamura , Saroj P. Dash , YoshiChika Otani

The spin Hall magnetoresistance (SMR) allows to investigate the magnetic textures of magnetically ordered insulators in heterostructures with normal metals by magnetotransport experiments. We here report the observation of the SMR in…

Mesoscale and Nanoscale Physics · Physics 2021-05-17 Paul Rosenberger , Matthias Opel , Stephan Geprägs , Hans Huebl , Rudolf Gross , Martina Müller , Matthias Althammer

We use temperature-dependent Hall measurements to identify contributions of spin Hall, magnetic proximity, and sublattice effects to the anomalous Hall signal in heavy metal/ferrimagnetic insulator heterostructures with perpendicular…

The tunnel magnetoresistance (TMR) is one of the most important spintronic phenomena but its reduction at finite temperature is a severe drawback for applications. Here, we reveal a crucial determinant of the drawback, that is, the $s$-$d$…

Materials Science · Physics 2021-11-05 Keisuke Masuda , Terumasa Tadano , Yoshio Miura

Angular momentum transport in magnetic multilayered structures plays a central role in spintronic physics and devices. The angular momentum currents or spin currents are carried by either quasi-particles such as electrons and magnons, or by…

Materials Science · Physics 2025-08-04 Kai Chen , Weiwei Lin , C. L. Chien , Shufeng Zhang

The spin Hall magnetoresistance (SMR) is widely used to study the interplay between charge and spin currents in bilayers of a magnetic insulator and a normal metal. However, not much is known about the spatial variation of the SMR across…

Colossal magnetoresistance (CMR) refers to a large change in electrical conductivity induced by a magnetic field in the vicinity of a metal-insulator transition and has inspired extensive studies for decades\cite{Ramirez1997, Tokura2006}.…

Materials Science · Physics 2018-08-01 Zhiyong Qiu , Dazhi Hou , Joseph Barker , Kei Yamamoto , Olena Gomonay , Eiji Saitoh

We study the temperature dependence of the spin Hall magnetoresistance (SMR) in yttrium iron garnet/platinum hybrid structures via magnetization orientation dependent magnetoresistance measurements. Our experiments show a decrease of the…

Mesoscale and Nanoscale Physics · Physics 2015-09-10 Sibylle Meyer , Matthias Althammer , Stephan Geprägs , Matthias Opel , Rudolf Gross , Sebastian T. B. Goennenwein

We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR).…

Spin Hall magnetoresistance (SMR) is studied in metallic bilayers that consist of heavy metal (HM) layer and a ferromagnetic metal (FM) layer. We find nearly a ten-fold increase of SMR in W/CoFeB compared to previously studied…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Junyeon Kim , Peng Sheng , Saburo Takahashi , Seiji Mitani , Masamitsu Hayashi

We consider a microscopic theory for the spin Hall magnetoresistance (SMR). We generally formulate a spin conductance at an interface between a normal metal and a magnetic insulator in terms of spin susceptibilities. We reveal that SMR is…

Mesoscale and Nanoscale Physics · Physics 2020-11-17 Takeo Kato , Yuichi Ohnuma , Mamoru Matsuo

We investigate the spin Hall magnetoresistance (SMR) at room temperature in thin film heterostructures of antiferromagnetic, insulating, (0001)-oriented alpha-Fe2O3 (hematite) and Pt. We measure their longitudinal and transverse…

We study the spin Hall magnetoresistance (SMR) and the magnon spin transport (MST) in Pt/Y3Fe5O12(YIG)-based devices with intentionally modified interfaces. Our measurements show that the surface treatment of the YIG film results in a…

Mesoscale and Nanoscale Physics · Physics 2016-11-09 Saül Vélez , Amilcar Bedoya-Pinto , Wenjing Yan , Luis E. Hueso , Fèlix Casanova
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