Search results for "MAGNETORESISTANCE"

showing 3 items of 173 documents

Unidirectional Spin Hall Magnetoresistance as a Tool for Probing the Interfacial Spin Polarization of Co2MnSi

2019

Materials with high spin polarization, such as Heusler compounds, are required for efficient spintronics. The authors propose an approach to probe the transport spin polarization at interfaces, using the recently discovered unidirectional spin Hall magnetoresistance. They show that insertion of thin Ag(001) layers clearly increases the interfacial spin polarization of the Heusler compound Co${}_{2}$MnSi, which is crucial for giant-magnetoresistance devices.

Materials scienceSpin polarizationSpintronicsCondensed matter physicsMagnetoresistanceengineeringGeneral Physics and Astronomyengineering.materialHeusler compoundSpin (physics)Physical Review Applied
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Monolithic integration of Giant Magnetoresistance (GMR) devices onto standard processed CMOS dies

2014

Giant Magnetoresistance (GMR) based technology is nowadays the preferred option for low magnetic fields sensing in disciplines such as biotechnology or microelectronics. Their compatibility with standard CMOS processes is currently investigated as a key point for the development of novel applications, requiring compact electronic readout. In this paper, such compatibility has been experimentally studied with two particular non-dedicated CMOS standards: 0.35 μm from AMS (Austria MicroSystems) and 2.5 μm from CNM (Centre Nacional de Microelectrònica, Barcelona) as representative examples. GMR test devices have been designed and fabricated onto processed chips from both technologies. In order …

Materials scienceIntegrated current sensorMonolithic integrationGiant magnetoresistanceIntegrated circuitCMOS; GMR; Integrated current sensor; Monolithic integration; Electronic Optical and Magnetic Materials; Atomic and Molecular Physics and Optics; Condensed Matter Physics; Surfaces Coatings and Films; Electrical and Electronic Engineeringlaw.inventionCoatings and FilmslawMicrosystemAtomic and Molecular PhysicsElectronicMicroelectronicsOptical and Magnetic MaterialsElectrical and Electronic Engineeringbusiness.industryCMOSGeneral EngineeringElectrical engineeringGMRCondensed Matter PhysicsFinite element methodMagnetic fieldSurfacesCMOSOptoelectronicsElectric currentand Opticsbusiness
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Accessing the fundamentals of magnetotransport in metals with terahertz probes

2015

Spin-dependent conduction in metals underlies all modern magnetic memory technologies, such as giant magnetoresistance (GMR). The charge current in ferromagnetic transition metals is carried by two non-mixing populations of sp-band Fermi-level electrons: one of majority-spin and one of minority-spin. These electrons experience spin-dependent momentum scattering with localized electrons, which originate from the spin-split d-band. The direct observation of magnetotransport under such fundamental conditions, however, requires magnetotransport measurements on the same timescale as the electron momentum scattering, which takes place in the sub-100 fs regime. Using terahertz electromagnetic prob…

PhysicsENERGY-BANDSSPECTROSCOPYCondensed matter physicsScatteringTerahertz radiationSPIN DYNAMICSGeneral Physics and AstronomyGiant magnetoresistanceRELAXATIONElectronPhysik (inkl. Astronomie)GIANT MAGNETORESISTANCEThermal conductionDEMAGNETIZATIONCondensed Matter::Mesoscopic Systems and Quantum Hall EffectTRANSPORTCondensed Matter::Materials ScienceLAYERED MAGNETIC-STRUCTURESFerromagnetismFERROMAGNETIC NICKELCondensed Matter::Strongly Correlated ElectronsSpin (physics)Electron scatteringTEMPERATURE
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