Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"spin-torque"”.
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Spin-torque-driven magnetization dynamics for neuromorphic functionality
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Spin-torque induced high frequency excitations and switching in spin-valve nanocontacts
This thesis presents a novel spintronic design of a nano-sized high frequency oscillator, which is a cutting edge physics research field with a huge potential for future applications in the areas of mobile telecommunication and information- as well as in biomedical-technologies. In this device, a …
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Magnetodynamics of pseudo spin valves investigated using co-planar waveguide and spin torque ferromagnetic resonance techniques
Nanocontact spin-torque nano-oscillators (NC-STNOs), based on magnetic multilayers, can generate a wide range of highly nonlinear localized and propagating spin wave modes for use in magnonics. In this thesis, we study some aspects of these structures from the fundamental physics point of view …
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Hybrid Magnonics in Antiferromagnets and Cavity Spintronic Devices
… and quantum domains. Magnons, the collective spin wave excitations in magnetically ordered materials, have recently attracted great attention for realizing hybrid dynamic systems. In this thesis, we develop hybrid magnonic systems with reduced complexity, improved scalability, and new …
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CURRENT-INDUCED MAGNETIC FIELD-FREE SWITCHING OF PERPENDICULAR MAGNETIZATION
The spin-orbit torque offers a powerful tool for controlling the magnetic order through electrical current in magnetic materials. Conventional method for field-free switching is complicated. In this thesis, we demonstrate the existence of out-of-plane spin torque in HM/FM bilayer and also a single …
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Study of Magnetization Switching for MRAM Based Memory Technologies
… be achieved. The dynamic switching triggered by spin torque transfer in spin-torque MRAM cell has been also derived in this dissertation. We have studied the magnetization's dynamics properties as a function of applied current pulse amplitude, shape, and also as a function of the Gilbert damping …
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Energy efficient hybrid computing systems using spin devices
<p>Emerging spin-devices like magnetic tunnel junctions (MTJ's), spin-valves and domain wall magnets (DWM) have opened new avenues for spin-based logic design. This work explored potential computing applications which can exploit such devices for higher energy-efficiency and performance. The …
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Magnetoresistive Random Access Memory (MRAM) technology : current advancement and future development
… in the near future by the introduction of spin-torque-transfer MRAM. A close look at the presented MRAM cost model, the cost of 64 and 128Mbit module can go as low as 4.4-4.9 cents/Mbit and 2.8-3.0 cents/Mbit respectively. Comparing to similar density (64 or 128 Mbit) DRAM product - around …
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BOOLEAN AND BRAIN-INSPIRED COMPUTING USING SPIN-TRANSFER TORQUE DEVICES
Several completely new approaches (such as spintronic, carbon nanotube, graphene, TFETs, etc.) to information processing and data storage technologies are emerging to address the time frame beyond current Complementary Metal-Oxide-Semiconductor (CMOS) roadmap. The high speed magnetization switching …
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The study of weak ferromagnetism by andreev reflection spin spectroscopy and development of bimorph electro-thermal actuators
<p>It is well accepted that spin polarization of materials has a major role in spintronics to improve the efficiency of spintronic devices. Point contact Andreev reflection (PCAR) spectroscopy, one of the most popular and reliable techniques, was used to obtain the conductance and by analyzing them …
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Nanomagnetismus von epitaktischen Fe(110)- und CrO 2 (100)-Strukturen im Hinblick auf potentielle spinelektronische Anwendungen
… and magnetic properties within so called spinelectronic or magnetoelectronic devices plays a key role in this area of research and technology. With the development of magnetic random access memories and magnetic-field sensors based on submicron magnetic elements there is a great deal of …
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Magnetische Anisotropie und Spintransport in magnetoelektronischen Schichtsystemen und Nanostrukturen
… (BLS). The frequency of the Damon Eshbach spin wave mode was measured for each thickness as a function of the angle between the external magnetic saturation field and a selected in plane direction of the sample. By fitting the spin wave frequency with a continuum model the relevant magnetic …
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Probabilistic design for emerging memory and nanometer-scale logic
… the unique physics-level stochasticity of spin-transfer torque magnetic RAM (STT-RAM). The write process of STT-RAM is stochastic: specifically, the write time of a bitcell varies significantly. The wors-tcase approach, which uses the longest write pulse duration, guarantees a successful …
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An efficient full-potential linearized augmented plane wave electronic structure method for charge and spin transport through realistic nanoferronic junctions
… allow the efficient computation of charge and spin transport properties in realistic nanoferronic materials and nanostructures. First, an order-N implementation of the FLAPW method is presented, which allows the efficient calculation of electronic transport in magnetic tunnel junctions (MTJs) …