Journal ArticleDOI
Spin routes in organic semiconductors
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TLDR
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.Abstract:
Organic semiconductors are characterized by a very low spin–orbit interaction, which, together with their chemical flexibility and relatively low production costs, makes them an ideal materials system for spintronics applications. The first experiments on spin injection and transport occurred only a few years ago, and since then considerable progress has been made in improving performance as well as in understanding the mechanisms affecting spin-related phenomena. Nevertheless, several challenges remain in both device performance and fundamental understanding before organic semiconductors can compete with inorganic semiconductors or metals in the development of realistic spintronics applications. In this article we summarize the main experimental results and their connections with devices such as light-emitting diodes and electronic memory devices, and we outline the scientific and technological issues that make organic spintronics a young but exciting field.read more
Citations
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Journal ArticleDOI
On the path toward organic spintronics
TL;DR: There has been a growing interest in utilizing the molecular spin state as a quantum of information, aiming to develop multifunctional molecular spintronics for memory, sensing, and logic applications as mentioned in this paper.
Journal ArticleDOI
Optically Tunable Magneto-Capacitance Phenomenon in Organic Semiconducting Materials Developed by Electrical Polarization of Intermolecular Charge-Transfer States
TL;DR: The optically-tunable magneto-capacitance is demonstrated by using intermolecular CT states in organic donor:acceptor composites and the magnetocapacitance phenomenon observed from the photo-excited TPD:BBOT:PMMA composite can be attributed to the interm OL states formed between TPD and BBOT molecules.
Journal ArticleDOI
Dynamical generation of spin currents
TL;DR: In this article, a spin injection into a ferromagnetic/nonmagnetic interface has been proposed for generating spin currents in a wide range of materials, providing a pathway to explore spin physics in condensed matter.
Journal ArticleDOI
Spin transport in higher n-acene molecules
Abstract: We investigate the spin-transport properties of molecules belonging to the acenes series by using density functional theory combined with the nonequilibrium Green's function approach to electronic transport. While short acenes are found to be nonmagnetic, molecules comprising more than nine acene rings have a spin-polarized ground state. In their gas phase, these have a singlet total spin configuration, where the two unpaired electrons occupy the doubly degenerate highest molecular orbital. Such an orbital degeneracy is however lifted once the molecule is attached asymmetrically to Au electrodes via thiol linkers, leading to a net fractional magnetic moment. In this situation, the system Au/$n$-acene/Au can act as an efficient spin filter with interesting applications in the emerging field of organic spintronics.
Journal ArticleDOI
Giant magnetoresistance enhancement at room-temperature in organic spin valves based on La0.67Sr0.33MnO3 electrodes
TL;DR: In this article, the magnetoresistance (MR) of Alq3-based organic spin valves using as-grown La0.67Sr0.33MnO3 (LSMO), annealed LSMO, and La 0.67Ca0.3 as the bottom electrode was studied.
References
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Journal ArticleDOI
Organic Electroluminescent Diodes
Ching Wan Tang,Steven A Vanslyke +1 more
TL;DR: In this article, a double-layer structure of organic thin films was prepared by vapor deposition, and efficient injection of holes and electrons was provided from an indium-tinoxide anode and an alloyed Mg:Ag cathode.
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
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
Enhanced magnetoresistance in layered magnetic structures with antiferromagnetic interlayer exchange
TL;DR: The electrical resistivity of Fe-Cr-Fe layers with antiferromagnetic interlayer exchange increases when the magnetizations of the Fe layers are aligned antiparallel, much stronger than the usual anisotropic magnetoresistance.