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Topic Area: Nanomagnetics
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Displaying records 11 to 20 of 216 records.
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11. Anisotropy of Magnetization Reversal and Magnetoresistance in Square Arrays of Permalloy Nano-Rings
Topic: Nanomagnetics
Published: 10/1/2006
Authors: A Goncharov, A Zhukov, V Metlushko, G Bordignon, H Fangohr, C de Groot, John Unguris, Willard C Uhlig, G Karapetrov, B Ilic, P A. de Groot
Abstract: Magnetization reversal mechanisms and the impact of magnetization direction are studied in square arrays of interconnected circular permalloy nanorings using magnetooptical Kerr effect, local imaging, numerical simulations, and transport techniques. ...

12. Applications of Polarized Electron Sources Utilizing Optical Orientation in Solids
Topic: Nanomagnetics
Published: 1/1/1984
Authors: Daniel Thornton Pierce, Robert Celotta

13. Artifacts in Ballistic Magnetoresistance Measurements
Topic: Nanomagnetics
Published: 6/1/2004
Authors: William F. Egelhoff Jr., L Gan, H Ettendgui, Y Kadmon, Cedric John Powell, P J Chen, Alexander J. Shapiro, Robert D McMichael, J Mallett, Thomas P Moffat, Mark D Stiles
Abstract: We have carried out an extensive search for credible evidence to support the existence of a ballistic magnetoresistance (BMR) effect in magnetic nanocontacts. We have investigated both thin-film and thin-wire geometries for both mechanically-formed ...

14. Artifacts that mimic ballistic magnetoresistance
Topic: Nanomagnetics
Published: 1/1/2004
Authors: William F. Egelhoff Jr., L Gan, Erik B. Svedberg, Cedric John Powell, Alexander J. Shapiro, Robert D McMichael, J Mallett, Thomas P Moffat, Mark D Stiles
Abstract: We have investigated the circumstances underlying recent reports of very large values of ballistic magnetoresistance (BMR) in nanocontacts between magnetic wires. We find that the geometries used are subject to artifacts due to motion of the wires th ...

15. 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 ...

16. Boltzmann Test of Slonczewski's Theory of Spin Transfer Torque
Topic: Nanomagnetics
Published: 11/12/2004
Authors: J Xiao, A Zangwill, Mark D Stiles
Abstract: We use a matrix Boltzmann equation formalism to test the accuracy of Slonczewski‰s theory of spin-transfer torque in thin-film heterostructures where a non-magnetic spacer layer separates two non-collinear ferromagnetic layers connected to non-m ...

17. Book Review: Polarized Electrons at Surfaces, Volume 106
Topic: Nanomagnetics
Published: 7/1/1986
Author: Daniel Thornton Pierce

18. CO Chemisorption on Ni(110): Effect on Surface Magnetism
Topic: Nanomagnetics
Published: 1/1/1986
Authors: C Feigerle, A Seiler, J Pena, Robert Celotta, Daniel Thornton Pierce
Abstract: The effect of CO chemisorption on the surface magnetism and unfilled electronic structure of Ni(110) is investigated by spin-polarized inverse-photoemission spectroscopy. A saturation in the reduction of the unfilled minority-spin d density of states ...

19. Calculation of Spin-Dependent Interface Resistance
Topic: Nanomagnetics
Published: 1/1/2000
Authors: Mark D Stiles, David R. Penn
Abstract: A simple expression for the interface resistance between two materials has been derived by Schep et al. [J. Magn. Magn. Mater. 177, 1166 (1998).] in terms of the transmission probability for electrons at the interface. This approximation is tested fo ...

20. Chemisorption Induced Changes in Surface Magnetism and Electronic Structure: Oxygen on Ni(110)
Topic: Nanomagnetics
Published: 1/1/1985
Authors: A Seiler, C Feigerle, J Pena, Robert Celotta, Daniel Thornton Pierce
Abstract: The effect of oxygen chemisorption on the Ni minority-spin 3d holes{long dash}and thus the Ni magnetic moment{long dash}is measured by spin-polarized inverse photoemission. A dramatic reduction of the minority-spin 3d holes is observed, indicating a ...

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