Real-time Hall-effect detection of current-induced magnetization dynamics in ferrimagnets

Abstract

Measurements of the transverse Hall resistance are widely used to investigate electron transport, magnetization phenomena, and topological quantum states. Owing to the difficulty of probing transient changes of the transverse resistance, the vast majority of Hall effect experiments are carried out in stationary conditions using either dc or ac currents. Here we present an approach to perform time-resolved measurements of the transient Hall resistance during current-pulse injection with sub-nanosecond temporal resolution. We apply this technique to investigate in real-time the magnetization reversal caused by spin-orbit torques in ferrimagnetic GdFeCo dots. Single-shot Hall effect measurements show that the current-induced switching of GdFeCo is widely distributed in time and characterized by significant activation delays, which limit the total switching speed despite the high domain-wall velocity typical of ferrimagnets. Our method applies to a broad range of current-induced phenomena and can be combined with non-electrical excitations to perform pump-probe Hall effect measurements.

References in corpus (29)

• Anomalous Hall effect
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Topological Hall effect in the A-phase of MnSi
• Electrical switching of an antiferromagnet
• Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
• Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
• Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO
• Topological Hall effect and Berry phase in magnetic nanostructures
• Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
• Ultrafast magnetization switching by spin-orbit torques
• Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets
• Giant Planar Hall Effect in Epitaxial (Ga,Mn)As Devices
• Electrical Manipulation of a Topological Antiferromagnetic State
• Threshold current for switching of a perpendicular magnetic layer induced by spin Hall effect
• Time- and spatially-resolved magnetization dynamics driven by spin-orbit torques
• Single-shot dynamics of spin-orbit torque and spin transfer torque switching in three-terminal magnetic tunnel junctions
• Anomalous current-induced spin torques in ferrimagnets near compensation
• Giant Planar Hall Effect in Topological Metals
• Ultrafast Magnetization Reversal by Picosecond Electrical Pulses
• High-speed domain wall racetracks in a magnetic insulator
• Soliton-like magnetic domain wall motion induced by the interfacial Dzyaloshinskii-Moriya interaction
• Thickness Dependence of Spin-Orbit Torques in Ferrimagnetic GdFeCo Alloys
• Spin-orbit torque driven chiral magnetization reversal in ultrathin nanostructures
• Time-Resolved Studies of the Spin-Transfer Reversal Mechanism in Perpendicularly Magnetized Magnetic Tunnel Junctions
• Time resolved measurements of the switching trajectory of Pt/Co elements induced by spin-orbit torques
• Spin wave emission by spin-orbit torque antennas
• Modulation of domain wall dynamics in TbFeCo single layer nanowire

Cited by in corpus (9)

• Spin-orbit torque switching of magnetic tunnel junctions for memory application
• Time-dependent multistate switching of topological antiferromagnetic order in Mn${}_3$Sn
• A review of modelling in ferrimagnetic spintronics
• Picosecond Spin-Orbit Torque Induced Coherent Magnetization Switching in a Ferromagnet
• Ultrafast Dynamics of Intrinsic Anomalous Hall Effect in the Topological Antiferromagnet Mn3Sn
• Quantum magnetometry of transient signals with a time resolution of 1.1 nanoseconds
• Deterministic and stochastic aspects of current-induced magnetization reversal in perpendicular nanomagnets
• Proposal for a nonadiabatic geometric gate with an Andreev spin qubit
• AC Current-Driven Magnetization Switching and Nonlinear Hall Rectification in a Magnetic Topological Insulator