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We experimentally image the magnetic precession phase of patterned spin Hall multilayer samples to study the rf driving field vector using time-resolved anomalous Nernst effect (TRANE) microscopy. Our ferromagnetic resonance (FMR)…

Materials Science · Physics 2016-04-27 Feng Guo , Jason M. Bartell , Gregory D. Fuchs

The needs for sensitively and reliably probing magnetization dynamics have been increasing in various contexts such as studying novel hybrid magnonic systems, in which the spin dynamics strongly and coherently couple to other excitations,…

We present a novel method that combines spin resonance spectroscopy with transmission electron microscopy (TEM), enabling localized in-situ detection of microwave (MW)-driven spin excitations. Our approach utilizes continuous wave MW…

In recent years, electrical spin injection and detection has grown into a lively area of research in the field of spintronics. Spin injection into a paramagnetic material is usually achieved by means of a ferromagnetic source, whereas the…

Mesoscale and Nanoscale Physics · Physics 2009-12-01 Sergio O. Valenzuela

The spin transfer torque is a phenomenon in which angular momentum of a spin polarized electrical current entering a ferromagnet is transferred to the magnetization. The effect has opened a new research field of electrically driven…

Materials Science · Physics 2012-05-07 P. Nemec , E. Rozkotova , N. Tesarova , F. Trojanek , E. De Ranieri , K. Olejnik , J. Zemen , V. Novak , M. Cukr , P. Maly , T. Jungwirth

Several experimental techniques have been introduced in recent years in attempts to measure spin transfer torque in magnetic tunnel junctions (MTJs). The dependence of spin torque on bias is important for understanding fundamental spin…

Mesoscale and Nanoscale Physics · Physics 2014-07-01 Chen Wang , Yong-Tao Cui , Jordan A. Katine , Robert A. Buhrman , Daniel C. Ralph

A longstanding goal of research in semiconductor spintronics is the ability to inject, modulate, and detect electron spin in a single device. A simple prototype consists of a lateral semiconductor channel with two ferromagnetic contacts,…

A distinguishing feature of spin accumulation in ferromagnet-semiconductor devices is precession of the non-equilibrium spin population of the semiconductor in a magnetic field. This is the basis for detection techniques such as the Hanle…

The generation, manipulation and detection of spin-polarized electrons in nanostructures define the main challenges of spin-based electronics[1]. Amongst the different approaches for spin generation and manipulation, spin-orbit coupling,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Sergio O. Valenzuela , M. Tinkham

We develop a simple method for measuring the electron spin relaxation times $T_1$, $T_2$ and $T_2^*$ in semiconductors and demonstrate its exemplary application to $n$-type GaAs. Using an abrupt variation of the magnetic field acting on…

Mesoscale and Nanoscale Physics · Physics 2020-08-05 V. V. Belykh , D. R. Yakovlev , M. Bayer

We demonstrate simultaneous detection of current driven antidamping-like and field-like spin-orbit torques in heavy metal/ferromagnetic metal bilayers by measuring all three magnetization components m_(x,) m_y, and m_z using the vector…

Using a multilayer structure containing (cobalt detector layer)/(copper spacer)/(Permalloy source layer), we show experimentally how the non-reorientable spin-orbit torque generated by the Permalloy source layer (the component of spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 Joseph A. Mittelstaedt , Daniel C. Ralph

Element-specific spectroscopies using synchrotron-radiation can provide unique insights into materials properties. The recently developed technique of X-ray detected ferromagnetic resonance (XFMR) allows studying the magnetization dynamics…

Materials Science · Physics 2023-05-17 Gerrit van der Laan , Thorsten Hesjedal

Optical heterodyne detection is a powerful technique for characterizing a wide range of physical excitations. Here, we use two types of optical heterodyne detection techniques (fundamental and parametric pumping) to microscopically…

Mesoscale and Nanoscale Physics · Physics 2024-06-04 A. Alemán , A. A. Awad , S. Muralidhar , R. Khymyn , A. Kumar , A. Houshang , D. Hanstorp , J. Åkerman

The spin flip of the conduction electrons at the interface of a ferromagnetic and a nonmagnetic part of a metallic wire, suspended between two electrodes, is shown to tort the wire when a current is driven through it. In order to enhance…

Strongly Correlated Electrons · Physics 2016-10-26 Peter Fulde , Stefan Kettemann

A double quantum dot inserted in parallel between two metallic leads allows to entangle the electron spin with the orbital (dot index) degree of freedom. An Aharonov-Bohm orbital phase can then be transferred to the spinor wavefunction,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Pascal Simon , Denis Feinberg

The purpose of this article is to review the current status of a frontier in dynamic spintronics and contemporary magnetism, in which much progress has been made in the past decade, based on the creation of a variety of micro- and…

Materials Science · Physics 2016-11-17 Michael Harder , Yongsheng Gui , Can-Ming Hu

We employ N-$V$ magnetometry to measure the stray field dynamics of a ferromagnetic permalloy nanowire driven by spin-orbit torques. Specifically, we observe the optically detected magnetic resonance (ODMR) signatures of both spontaneous…

Mesoscale and Nanoscale Physics · Physics 2023-08-01 Adrian Solyom , Michael Caouette-Mansour , Brandon Ruffolo , Patrick Braganca , Lilian Childress , Jack Sankey

Ferrimagnets have the potential to play a key role in spintronics due to their high stability, low energy consumption, and rapid magnetic state switching. These characteristics are typically observed in ferrimagnetic materials near magnetic…

Electrical detection of spins is an essential tool in understanding the dynamics of spins in semiconductor devices, providing valuable insights for applications ranging from optoelectronics and spintronics to quantum information processing.…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 C. C. Lo , M. Urdampilleta , P. Ross , M. F. Gonzalez-Zalba , J. Mansir , S. A. Lyon , M. L. W. Thewalt , J. J. L. Morton
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