Journal ArticleDOI
Giant magnetoresistance in organic spin-valves
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TLDR
The injection, transport and detection of spin-polarized carriers using an organic semiconductor as the spacer layer in a spin-valve structure is reported, yielding low-temperature giant magnetoresistance effects as large as 40 per cent.Abstract:
A spin valve is a layered structure of magnetic and non-magnetic (spacer) materials whose electrical resistance depends on the spin state of electrons passing through the device and so can be controlled by an external magnetic field. The discoveries of giant magnetoresistance and tunnelling magnetoresistance in metallic spin valves have revolutionized applications such as magnetic recording and memory, and launched the new field of spin electronics--'spintronics'. Intense research efforts are now devoted to extending these spin-dependent effects to semiconductor materials. But while there have been noteworthy advances in spin injection and detection using inorganic semiconductors, spin-valve devices with semiconducting spacers have not yet been demonstrated. pi-conjugated organic semiconductors may offer a promising alternative approach to semiconductor spintronics, by virtue of their relatively strong electron-phonon coupling and large spin coherence. Here we report the injection, transport and detection of spin-polarized carriers using an organic semiconductor as the spacer layer in a spin-valve structure, yielding low-temperature giant magnetoresistance effects as large as 40 per cent.read more
Citations
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Journal ArticleDOI
Spintronics: Fundamentals and applications
TL;DR: Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solid-state systems as discussed by the authors, where the primary focus is on the basic physical principles underlying the generation of carrier spin polarization, spin dynamics, and spin-polarized transport.
Journal ArticleDOI
Molecular spintronics using single-molecule magnets
Lapo Bogani,Wolfgang Wernsdorfer +1 more
TL;DR: This work reviews the first progress in the resulting field, molecular spintronics, which will enable the manipulation of spin and charges in electronic devices containing one or more molecules, and discusses the advantages over more conventional materials, and the potential applications in information storage and processing.
Journal ArticleDOI
Electron transport in molecular junctions.
TL;DR: An overview of some of the recent advances in electron transport through molecules attached to electrodes is presented and issues, including molecule–electrode contacts, local heating- and current-induced instabilities, stochastic fluctuations and the development of characterization tools are discussed.
Journal ArticleDOI
Towards molecular spintronics.
Alexandre Reily Rocha,Víctor M. García-Suárez,Steve W. D. Bailey,Colin J. Lambert,Jaime Ferrer,Stefano Sanvito +5 more
TL;DR: It is demonstrated theoretically that organic spin valves, obtained by sandwiching an organic molecule between magnetic contacts, can show a large bias-dependent magnetoresistance and that this can be engineered by an appropriate choice of molecules and anchoring groups.
Journal ArticleDOI
Spin routes in organic semiconductors
TL;DR: The main experimental results and their connections with devices such as light-emitting diodes and electronic memory devices are summarized, and the scientific and technological issues that make organic spintronics a young but exciting field are outlined.
References
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Journal ArticleDOI
Spintronics: a spin-based electronics vision for the future.
Stuart A. Wolf,Stuart A. Wolf,David D. Awschalom,Robert A. Buhrman,J. M. Daughton,S. von Molnar,Michael L. Roukes,Almadena Chtchelkanova,Daryl Treger +8 more
TL;DR: This review describes a new paradigm of electronics based on the spin degree of freedom of the electron, which has the potential advantages of nonvolatility, increased data processing speed, decreased electric power consumption, and increased integration densities compared with conventional semiconductor devices.
Journal ArticleDOI
Giant magnetoresistance of (001)Fe/(001)Cr magnetic superlattices.
Mario Norberto Baibich,J. M. Broto,Albert Fert,F. Nguyen Van Dau,Frédéric Petroff,P. Etienne,G. Creuzet,A. Friederich,Jean Chazelas +8 more
TL;DR: This work ascribes this giant magnetoresistance of (001)Fe/(001)Cr superlattices prepared by molecularbeam epitaxy to spin-dependent transmission of the conduction electrons between Fe layers through Cr layers.
Journal ArticleDOI
Electroluminescence in conjugated polymers
Richard H. Friend,R. W. Gymer,A.B. Holmes,J. H. Burroughes,R.N. Marks,Carlo Taliani,Donal D. C. Bradley,D.A. dos Santos,Jean-Luc Brédas,Michael Lögdlund,William R. Salaneck +10 more
TL;DR: Research in the use of organic polymers as active semiconductors in light-emitting diodes has advanced rapidly, and prototype devices now meet realistic specifications for applications.
Journal ArticleDOI
Tunneling between ferromagnetic films
TL;DR: In this article, the mean magnetizations of the two ferromagnetic film are parrallel or antiparallel and conductance measurement is related to the spin polarizations of conduction electrons.
Journal ArticleDOI
Large magnetoresistance at room temperature in ferromagnetic thin film tunnel junctions.
TL;DR: b, R/R, is 11.8%, 20%, and 24%, respectively, consistent with Julliere's model based on the spin polarization of the conduction electrons of the magnetic films, in qualitative agreement with Slonczewski's model.