Electrical detection of spin accumulation and spin precession at room temperature in metallic spin valves

Jedema, F. J.; Costache, M. V.; Heersche, H. B.; Baselmans, J. J. A.; van Wees, B. J.
December 2002
Applied Physics Letters;12/30/2002, Vol. 81 Issue 27, p5162
Academic Journal
We have fabricated a multiterminal lateral mesoscopic metallic spin valve demonstrating spin precession at room temperature (RT), using tunnel barriers in combination with metallic ferromagnetic electrodes as a spin injector and detector. The observed modulation of the output signal due to the spin precession is discussed and explained in terms of a time-of-flight experiment of electrons in a diffusive conductor. The obtained spin relaxation length λ[sub sf]=500 nm in an aluminum strip will make detailed studies of spin dependent transport phenomena possible and allow one to explore the possibilities of the electron spin for new electronic applications at RT.


Related Articles

  • Electron–nuclear interaction in 13C nanotube double quantum dots. Churchill, H. O. H.; Bestwick, A. J.; Harlow, J. W.; Kuemmeth, F.; Marcos, D.; Stwertka, C. H.; Watson, S. K.; Marcus, C. M. // Nature Physics;May2009, Vol. 5 Issue 5, p321 

    For coherent electron spins, hyperfine coupling to nuclei in the host material can either be a dominant source of unwanted spin decoherence or, if controlled effectively, a resource enabling storage and retrieval of quantum information. To investigate the effect of a controllable nuclear...

  • Semiconductor spintronics: Spins go their own way. van Wees, Bart // Nature Physics;Mar2007, Vol. 3 Issue 3, p147 

    The article discusses the fundamental research and practical spintronic applications. A semiconductor spintronics has the ability to convert electrical signals into spin signals. The article demonstrate a semiconductor device enabling the spin currents to be injected, transported and detected by...

  • A nuclear magnetic resonance study on rubrene-cobalt nanocomposites. Shiraishi, Masashi; Kusai, Haruka; Nouchi, Ryo; Nozaki, Takayuki; Shinjo, Teruya; Suzuki, Yoshishige; Yoshida, Makoto; Takigawa, Masashi // Applied Physics Letters;8/4/2008, Vol. 93 Issue 5, p053103 

    We implemented a nuclear magnetic resonance (NMR) study on rubrene (C42H28)-Co nanocomposites that exhibit an enhanced magnetoresistance (MR) ratio of 80%. The 59Co NMR spin echo experiment enabled clarification of the hyperfine field of Co at the interface between the ferromagnet and the...

  • Optical orientation in p-doped semiconductor structures with a split valence band. German, E. P.; Subashiev, A. V. // JETP Letters;6/25/97, Vol. 65 Issue 12, p909 

    The optical orientation of electron spins in heavily doped semiconductor structures with a valence band that is split as a result of size quantization or uniaxial deformation is investigated theoretically. It is shown that lowering the Fermi level by doping and by lowering the temperature should...

  • Eavesdropping on spin talk. Kikkawa, Jay // Nature;1/17/2002, Vol. 415 Issue 6869, p273 

    Discusses a study that shows how complex changes in electronic behavior can both control and monitor the glow of spin information into and out of the nuclei in a semiconductor. Ineractions between electronic and nuclear spins in a solid; Existing techniques for studying nuclear spin dynamics;...

  • Gate-voltage control of spin interactions between electrons and nuclei in a semiconductor. Smet, J.H.; Deutschmann, R.A.; Ertl, F.; Wegscheider, W.; Abstreiter, G.; von Klitzing, K. // Nature;1/17/2002, Vol. 415 Issue 6869, p281 

    Reports on the procedures that carry out the controlled transfer of spin angular momentum between electrons and the nuclei of the host semiconductor using gate voltages only. Enhancement of the spin transfer rate near a ferromagnetic ground state of the electron system; Hyperfine interaction...

  • Attenuation of homo- and heteronuclear multiple spin echoes by diffusion. Ardelean, Ioan; Kossel, Elke; Kimmich, Rainer // Journal of Chemical Physics;5/15/2001, Vol. 114 Issue 19, p8520 

    Multiple spin echoes arise after "nonlinear" evolution of coherences in the presence of modulated demagnetizing fields. Such modulations can be prepared, for example, with the aid of a sequence of two 90° radio-frequency pulses in the presence of pulsed or steady field gradients. The echo...

  • Numerical analysis of Solomon echo amplitudes in static solids. Man, Pascal P. // Journal of Chemical Physics;3/8/1997, Vol. 106 Issue 10, p3908 

    Discusses the derivation of a numerical procedure for computing the Solomon echo amplitudes of half-integer quadrupole spins. Use of a detailed analysis of the evolution of the spin system using the density operator formalism; Validity of results for any ratio of the quadrupole couplings; Echo...

  • Tunability of electron spin coherence in III–V quantum wells. Lau, Wayne H.; Flatte´, Michael E. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p8682 

    A micromagnetic study is performed for the writing and reading processes in perpendicular recording at high areal densities. In particular, the effect of intergranular exchange interactions in media is examined. Calculations are done for three different values of intergranular exchange coupling....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics