Browsing Institutt for fysikk by Document Types "Journal article"
Now showing items 61-80 of 1298
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Angle Resolved Relaxation of Spin Currents by Antiferromagnets in Spin Valves
(Peer reviewed; Journal article, 2019)We observe and analyze tunable relaxation of a pure spin current by an antiferromagnet in spin valves. This is achieved by carefully controlling the angle between a resonantly excited ferromagnetic layer pumping the spin ... -
Anisotropic and controllable Gilbert-Bloch dissipation in spin valves
(Peer reviewed; Journal article, 2019)Spin valves form a key building block in a wide range of spintronic concepts and devices from magnetoresistive read heads to spin-transfer-torque oscillators. We elucidate the dependence of the magnetic damping in the free ... -
Anisotropic diffusion and the cosmic ray anisotropy
(Journal article; Peer reviewed, 2019)We argue that the diffusion of cosmic rays in the Galactic magnetic field has to be strongly anisotropic. As a result, the number of CR sources contributing to the local CR flux is strongly reduced. The CR density is ... -
Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO3
(Peer reviewed; Journal article, 2022)In antiferromagnets, the efficient transport of spin-waves has until now only been observed in the insulating antiferromagnet hematite, where circularly (or a superposition of pairs of linearly) polarized spin-waves diffuse ... -
Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO3
(Peer reviewed; Journal article, 2022)In antiferromagnets, the efficient transport of spin-waves has until now only been observed in the insulating antiferromagnet hematite, where circularly (or a superposition of pairs of linearly) polarized spin-waves diffuse ... -
Anisotropic Paramagnetic Meissner Effect by Spin-Orbit Coupling
(Journal article, 2016)Conventional s-wave superconductors repel an external magnetic field. However, a recent experiment [A. Di Bernardo et al., Phys. Rev. X 5, 041021 (2015)] has tailored the electromagnetic response of superconducting ... -
Anisotropic plasmonic Cu nanoparticles in sol-gel oxide nanopillars studied by spectroscopic Mueller matrix ellipsometry
(Journal article; Peer reviewed, 2013)Broadened plasmon resonances of Cu nanoparticles in nanopatterned mixed oxide sol-gel nanopillars are shown to be readily detected by spectroscopic Mueller matrix ellipsometry. The plasmonic nanomaterials are obtained by ... -
Anisotropies and magnetic phase transitions in insulating antiferromagnets determined by a Spin-Hall magnetoresistance probe
(Journal article; Peer reviewed, 2019)Antiferromagnets possess a number of intriguing and promising properties for electronic devices, which include a vanishing net magnetic moment and thus insensitivity to large magnetic fields and characteristic terahertz ... -
Anomalous diffusion in systems with concentration-dependent diffusivity: exact solutions and particle simulations
(Journal article; Peer reviewed, 2020)We explore the anomalous diffusion that may arise as a result of a concentration dependent diffusivity. The diffusivity is taken to be a power law in the concentration, and from exact analytical solutions we show that the ... -
Anomalous domain wall velocity and Walker breakdown in hybrid systems with anisotropic exchange
(Journal article; Peer reviewed, 2013)It has recently been proposed that spin-transfer torques in magnetic systems with anisotropic exchange can be strongly enhanced, reducing the characteristic current density with up to four orders of magnitude compared to ... -
Anomalous Paths in Quantum Mechanical Path-Integrals
(Journal article; Peer reviewed, 2013)We investigate modifications of the discrete-time lattice action, for a quantum mechanical particle in one spatial dimension, that vanish in the naïve continuum limit but which, nevertheless, induce nontrivial effects due ... -
Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations
(Peer reviewed; Journal article, 2019)Employing the concept of two-mode squeezed states from quantum optics, we demonstrate a revealing physical picture for the antiferromagnetic ground state and excitations. Superimposed on a Néel ordered configuration, a ... -
Antimicrobial Properties of Samarium Doped Hydroxyapatite Suspensions and Coatings
(Peer reviewed; Journal article, 2020)Post-implant infections are a major health problem, and it is well-known that treating them with conventional drugs is accompanied by many disadvantages. The development of new biomaterials with enhanced antimicrobial ... -
Antimicrobial Resistance and Biofilms Underlying Catheter-Related Bloodstream Coinfection by Enterobacter cloacae Complex and Candida parapsilosis
(Peer reviewed; Journal article, 2022)Biofilm-associated infections are a public health concern especially in the context of healthcare-associated infections such as catheter-related bloodstream infections (CRBSIs). We evaluated the biofilm formation and ... -
ApoE Alzheimer’s Disease Aβ-amyloid plaque morphology varies according to APOE isotype
(Peer reviewed; Journal article, 2023)Background: The apolipoprotein E (APOE, gene; apoE, protein) ε4 allele is the most commonly identified genetic risk factor for typical late-onset sporadic Alzheimer’s disease (AD). Each APOE ε4 allele roughly triples the ... -
Application of a long short-term memory for deconvoluting conductance contributions at charged ferroelectric domain walls
(Peer reviewed; Journal article, 2020)Ferroelectric domain walls are promising quasi-2D structures that can be leveraged for miniaturization of electronics components and new mechanisms to control electronic signals at the nanoscale. Despite the significant ... -
Application of Temporary, Cell-Containing Alginate Microcarriers to Facilitate the Fabrication of Spatially Defined Cell Pockets in 3D Collagen Hydrogels
(Journal article; Peer reviewed, 2021)Mimicking the complexity of natural tissue is a major challenge in the field of tissue engineering. Here, a facile 2-step fabrication method to prepare 3D constructs with distinct regions of high cell concentrations and ... -
Approaching Quantization in Macroscopic Quantum Spin Hall Devices through Gate Training
(Journal article; Peer reviewed, 2019)Quantum spin Hall edge channels hold great promise as dissipationless one-dimensional conductors.However, the ideal quantized conductance of2e2=his only found in very short channels-in contradictionwith the expected ... -
Approaching the Limits of Aspect Ratio in Free-Standing Al2O3 3D Shell Structures
(Peer reviewed; Journal article, 2022)Nanoscale free-standing membranes are used for a variety of sensors and other micro/nano-electro-mechanical systems devices. To tune performance, it is indispensable to understand the limits of aspect ratios achievable. ... -
Aspects related to variability of radiative cooling by NO in lower thermosphere, TEC and O/N2 correlation, and diffusion of NO into mesosphere during the Halloween storms
(Peer reviewed; Journal article, 2022)Nitric Oxide is a very important trace species which plays a significant role acting as a natural thermostat in Earth’s thermosphere during strong geomagnetic activity. In this paper, we present various aspects related to ...