Ultrafast spin demagnetization by nonthermal electrons of TbFe alloy film

Ji-Wan Kim; Kyeong-Dong Lee; Jae-Woo Jeong; Sung-Chul Shin
May 2009
Applied Physics Letters;5/11/2009, Vol. 94 Issue 19, p192506
Academic Journal
An ultrafast spin demagnetization process of an amorphous Tb35Fe65 alloy film has been investigated by means of an all-optical pump-probe technique. Interestingly, steplike demagnetization on a subpicosecond time scale is observed before a much slower change on a time scale of tens of picoseconds. The steplike demagnetization at the subpicosecond scale is explained by the extended three-temperature model considering the interaction between a nonthermal electron and a spin system. The characteristic of subpicosecond demagnetization of TbFe alloy film is expected to be very useful in the manipulation of the spin state in ultrafast regime.


Related Articles

  • Quasielectrostatic instabilities excited by energetic oxygen ions in the ring current region. Singh, S. V.; Kakad, A. P.; Lakhina, G. S. // Physics of Plasmas;Jan2005, Vol. 12 Issue 1, p012903 

    Quasielectrostatic instabilities driven by anisotropic oxygen ions are investigated during storms/substorms in three-component ring current plasma consisting of electrons, protons, and energetic oxygen ions having loss-cone distribution. The response of the electrons is fully electromagnetic and...

  • Nonintrusive measurement of ionisation in vegetation fire plasma. K. Mphale; M. Heron // European Physical Journal - Applied Physics;Feb2008, Vol. 41 Issue 2, p157 

    Vegetation fires are slightly ionised gaseous medium. Omnipresent alkali metal species in plant's organic structure are the main source of thermally produced electrons in the fires. In the flames, electron-neutral particle collisions dominate other modes of particle interaction. The collision...

  • Distorted waves with exact nonlocal exchange: A canonical function approach. Fakhreddine, K; Tweed, R J; Vien, G Nguyen; Tannous, C; Langlois, J; Robaux, O // Canadian Journal of Physics;Mar2006, Vol. 84 Issue 3, p193 

    The Canonical Function Method (CFM) is developed and applied, for the first time, to the distorted wave problem with exact nonlocal exchange. In electron impact ionization of hydrogenic systems, the latter originates from the Pauli exclusion principle that leads, in the Hartree�Fock...

  • State selective electron capture in partially stripped ion-atom interaction at intermediate and high energies. Sounda, S.; Dhara, A.; Purkait, M.; Mandal, C. R. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;May2006, Vol. 38 Issue 2, p257 

    Post form of “boundary corrected continuum intermediate state (BCIS)” approximation has been employed to study charge transfer cross-sections in collision of Cq+, Nq+ and Oq+ (q=1–5) with ground state atomic hydrogen in the energy range of 50–200 keV/amu. In this...

  • Semiclassical Model of Atomic Collisions: Stopping and Capture of Heavy Charged Particles and Exotic Atom Formation. Beck, W. A. // Physics of Atomic Nuclei;Apr2000, Vol. 63 Issue 4, p635 

    The semiclassical approach to modeling atomic collision systems lies between the easy classical model, which is most useful for simple systems in which quantum effects can be neglected, and the full quantum mechanical description, which is generally too difficult for more than simple systems. By...

  • Results from NA60 experiment at the CERN SPS. Usai, G.; Arnaldi, R.; Averbeck, R.; Banicz, K.; Castor, J.; Chaurand, B.; Cicalo, C.; Colla, A.; Cortese, P.; Damjanovic, S.; David, A.; De Falco, A.; Devaux, A.; Drees, A.; Ducroux, L.; En'yo, H.; Ferretti, A.; Floris, M.; Force, P.; Guettet, N. // AIP Conference Proceedings;2006, Vol. 842 Issue 1, p29 

    The NA60 experiment studies open charm and prompt dimuon production in proton-nucleus and nucleus-nucleus collisions at the CERN SPS. During 2003 the experiment collected data in Indium-Indium collisions at 158 GeV per nucleon. In this paper the first results on low mass dimuons, intermediate...

  • Transverse Spin Effects in SIDIS at COMPASS. Joosten, Rainer // AIP Conference Proceedings;12/17/2009, Vol. 1182 Issue 1, p577 

    The measurement of single spin asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) on a transversely polarized target is an important part of the COMPASS physics program. It allows us to investigate the transversity distribution functions as well as transverse momentum dependent...

  • Measurements of the Top Quark Mass at D0. Snyder, Scott S. // AIP Conference Proceedings;2/10/2010, Vol. 1200 Issue 1, p674 

    We present measurements of the top quark mass based on 3.6 fb-1 of data collected by the D0 experiment during Run II of the Fermilab Tevatron collider. We present results in the dilepton and lepton+jets final states. We also present the measurement of the mass difference between t and t quarks...

  • Final-state interaction effects in semi-exclusive DIS off the deuteron. Atti, C. Ciofi degli; Kaptari, L. P.; Kopeliovich, B. Z. // European Physical Journal A -- Hadrons & Nuclei;Jan2004, Vol. 19 Issue 1, p145 

    The effects of the final-state interaction (FSI) in semi-exclusive deep inelastic scattering of electrons off the deuteron are analyzed paying particular attention to two extreme kinematical regions: i) the one where FSI effects are minimized, so that the quark distribution of bound nucleons...


Read the Article


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

Try another library?
Sign out of this library

Other Topics