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Topic Area: Nanomagnetics

Displaying records 41 to 50 of 216 records.
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41. Bias dependence of magnetic exchange interactions: application to interlayer exchange coupling in spin valves.
Topic: Nanomagnetics
Published: 2/3/2009
Authors: Paul M Haney, Christian Heiliger, Mark D Stiles
Abstract: We study how a bias voltage changes magnetic exchange interactions. We derive a general expression for magnetic exchange interactions for open systems under a bias potential, and apply it to spin valves. We find that for metallic systems, the inte ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620602

42. Reply to Comment on Adiabatic Domain Wall Motion and Landau-Lifshitz Damping
Topic: Nanomagnetics
Published: 12/3/2008
Authors: Mark D Stiles, W Saslow, Michael J Donahue, Andrew Zangwill
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620608

43. A New Spin on the Doppler Effect
Topic: Nanomagnetics
Published: 10/17/2008
Authors: Mark D Stiles, Robert D McMichael
Abstract: The coupling between ferromagnetism and electrical current has recently been the object of intense study because of the combination of interesting scientific developments and the potential technological impact. This coupling is mediated by spin curr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620606

44. Ab Initio Studies of the Spin-Transfer Torque in Tunnel Junctions
Topic: Nanomagnetics
Published: 5/9/2008
Authors: Christian Heiliger, Mark D Stiles
Abstract: We calculate the spin-transfer torque in Fe/MgO/Fe tunnel junctions and analyze the results in comparison to all-metallic junctions. We show that the spin-transfer torque is interfacial in the ferromagnetic layer to a greater degree than in spin-valv ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620023

45. Model for Collimated Spin Wave Beam Generated by a Single Layer, Spin Torque Nanocontact
Topic: Nanomagnetics
Published: 4/1/2008
Authors: Mark Hoefer, Thomas J Silva, Mark D Stiles
Abstract: A model of spin torque induced magnetization dynamics based upon semi-classical spin diffusion theory for a single layer nanocontact is presented. The model incorporates effects due to the current induced Oersted field and predicts the generation of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620609

46. Spin Transfer Torques
Topic: Nanomagnetics
Published: 4/1/2008
Authors: D Ralph, Mark D Stiles
Abstract: This tutorial article is designed for beginning graduate students who are interested in the physics of spin transfer torques in magnetic devices. We provide an elementary discussion of the mechanism of spin transfer torque, and review the theoretical ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620024

47. 'Ballistic' vs. 'Diffusive' Transport in Current-Induced Magnetization Switching
Topic: Nanomagnetics
Published: 12/21/2007
Authors: N Theodoropoulou, A Sharma, W Pratt, J. Bass, Mark D Stiles, J Xiao
Abstract: We test whether current-induced magnetization switching due to spin-transfer-torque in ferromagnetic/non-magnetic/ferromagnetic (F/N/F) trilayers changes significantly when scattering within the N-metal layers is changed from ballistic to diffusive. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620018

48. A Numerical Method to Solve the Boltzmann Equation for a Spin Valve
Topic: Nanomagnetics
Published: 10/1/2007
Authors: J Xiao, A Zangwill, Mark D Stiles
Abstract: We present a numerical algorithm to solve the Boltzmann equation for the electron distribution function in magnetic multilayer heterostructures with non-collinear magnetizations. The solution is based on a scattering matrix formalism for layers that ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620591

49. Theory of Spin Transfer Torque
Topic: Nanomagnetics
Published: 9/1/2007
Author: Mark D Stiles
Abstract: In magnetic multilayers, the spin polarized currents flowing between the magnetic layers can exert torques on the magnetizations of the layers when the magnetizations are not collinear. The theory of these spin transfer torques is developed in term ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620597

50. Manipulation of the Vortex Motion in Nanostructured Ferromagnetic/Superconductor Hybrids
Topic: Nanomagnetics
Published: 4/30/2007
Authors: A V Silhanek, W Gillijns, V V Moshchalkov, V Metlushko, F Gozzini, B Ilic, Willard C Uhlig, John Unguris
Abstract: The authors investigate the rectified motion of vortices in superconducting films deposited on top of a close-packed array of open in-plane magnetized triangular micromagnets. The dc voltage induced by the vortex drift under an ac excitation is reco ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620593



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