O. J. Amin
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View article: Anomalous temperature dependence of local magnetic fields in altermagnetic MnTe
Anomalous temperature dependence of local magnetic fields in altermagnetic MnTe Open
Altermagnets are a novel type of magnetic system that has a spin-polarised electric band structure in the absence of a net magnetic moment, leading to exciting prospects in potential device applications. Hexagonal MnTe, a prototypical alte…
View article: Nanoscale imaging and control of altermagnetism in MnTe
Nanoscale imaging and control of altermagnetism in MnTe Open
View article: Néel vector waves in antiferromagnetic CuMnAs excited by surface acoustic waves
Néel vector waves in antiferromagnetic CuMnAs excited by surface acoustic waves Open
Magnetoelastic effects in antiferromagnetic CuMnAs are investigated by applying dynamic strain in the 0.01% range through surface acoustic waves in the GaAs substrate. The magnetic state of the CuMnAs/GaAs is characterized by a multitude o…
View article: Antiferromagnetic spintronics and beyond
Antiferromagnetic spintronics and beyond Open
In this review article, we summarize some recent key results in the development of antiferromagnetic spintronics. Current-induced switching of the Néel vector orientation has now been established in a wide range of antiferromagnetic films …
View article: Altermagnetism imaged and controlled down to the nanoscale
Altermagnetism imaged and controlled down to the nanoscale Open
Nanoscale detection and control of the magnetic order underpins a broad spectrum of fundamental research and practical device applications. The key principle involved is the breaking of time-reversal ($\cal{T}$) symmetry, which in ferromag…
View article: X-Ray Magnetic Circular Dichroism in Altermagnetic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>α</mml:mi></mml:math>-MnTe
X-Ray Magnetic Circular Dichroism in Altermagnetic -MnTe Open
Altermagnetism is a recently identified magnetic symmetry class combining characteristics of conventional collinear ferromagnets and antiferromagnets, that were regarded as mutually exclusive, and enabling phenomena and functionalities unp…
View article: Thermally stable Peltier controlled vacuum chamber for electrical transport measurements
Thermally stable Peltier controlled vacuum chamber for electrical transport measurements Open
The design, manufacture, and characterization of an inexpensive, temperature-controlled vacuum chamber with millikelvin stability for electrical transport measurements at and near room temperature is reported. A commercially available Pelt…
View article: Atomically Sharp Domain Walls in an Antiferromagnet
Atomically Sharp Domain Walls in an Antiferromagnet Open
The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its relativistic quantum fundamentals to applications in information technologies. The traditional focus of the…
View article: Bi2Se3 interlayer treatments affecting the Y3Fe5O12 (YIG) platinum spin Seebeck effect
Bi2Se3 interlayer treatments affecting the Y3Fe5O12 (YIG) platinum spin Seebeck effect Open
In this work, we present a method to enhance the longitudinal spin Seebeck effect at platinum/yttrium iron garnet (Pt/YIG) interfaces. The introduction of a partial interlayer of bismuth selenide (Bi2Se3, 2.5% surface coverage) interfaces …
View article: Magneto-Acoustic Waves in antiferromagnetic CuMnAs excited by Surface Acoustic Waves
Magneto-Acoustic Waves in antiferromagnetic CuMnAs excited by Surface Acoustic Waves Open
Magnetoelastic effects in antiferromagnetic CuMnAs are investigated by applying dynamic strain in the 0.01% range through surface acoustic waves in the GaAs substrate. The magnetic state of the CuMnAs/GaAs is characterized by a multitude o…
View article: Electrical control of 180° domain walls in an antiferromagnet
Electrical control of 180° domain walls in an antiferromagnet Open
We demonstrate the reversible current-induced motion of 180° antiferromagnetic domain walls in a CuMnAs device. By controlling the magnitude and direction of the current pulse, the position of a domain wall can be switched between three di…
View article: Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature
Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature Open
View article: Magnetic domain engineering in antiferromagnetic CuMnAs and Mn$_2$Au devices
Magnetic domain engineering in antiferromagnetic CuMnAs and Mn$_2$Au devices Open
Antiferromagnetic materials hold potential for use in spintronic devices with fast operation frequencies and field robustness. Despite the rapid progress in proof-of-principle functionality in recent years, there has been a notable lack of…
View article: Atomically sharp domain walls in an antiferromagnet
Atomically sharp domain walls in an antiferromagnet Open
The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its physical fundamentals to applications in information technologies. Here, we explore antiferromagnetic CuMnA…
View article: Defect-driven antiferromagnetic domain walls in CuMnAs films
Defect-driven antiferromagnetic domain walls in CuMnAs films Open
Efficient manipulation of antiferromagnetic (AF) domains and domain walls has opened up new avenues of research towards ultrafast, high-density spintronic devices. AF domain structures are known to be sensitive to magnetoelastic effects, b…
View article: Atomically sharp domain walls in an antiferromagnet
Atomically sharp domain walls in an antiferromagnet Open
The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its relativistic quantum fundamentals to applications in information technologies. The traditional focus of the…
View article: Low-energy switching of antiferromagnetic CuMnAs/GaP using sub-10 nanosecond current pulses
Low-energy switching of antiferromagnetic CuMnAs/GaP using sub-10 nanosecond current pulses Open
The recently discovered electrical-induced switching of antiferromagnetic (AF) materials that have spatial inversion asymmetry has enriched the field of spintronics immensely and opened the door for the concept of antiferromagnetic memory …
View article: Spin flop and crystalline anisotropic magnetoresistance in CuMnAs
Spin flop and crystalline anisotropic magnetoresistance in CuMnAs Open
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View article: Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs
Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs Open
Antiferromagnets offer spintronic device characteristics unparalleled in ferromagnets owing to their lack of stray fields, THz spin dynamics, and rich materials landscape. Microscopic imaging of antiferromagnetic domains is one of the key …
View article: Current-polarity dependent manipulation of antiferromagnetic domains
Current-polarity dependent manipulation of antiferromagnetic domains Open
Antiferromagnets have a number of favourable properties as active elements in spintronic devices, including ultra-fast dynamics, zero stray fields and insensitivity to external magnetic fields . Tetragonal CuMnAs is a testbed system in whi…