Effect of interlayer magnetic coupling on the Jc of YBa2Cu3O7/insulator/YBa2Cu3O7 trilayers
We have studied critical current density (Jc) in YBa2Cu3O7–x/insulator/YBa2Cu3O7–x trilayers as the interlayer magnetic coupling is reduced by increasing the insulator thickness (tI). Althou...
We have studied critical current density (Jc) in YBa2Cu3O7–x/insulator/YBa2Cu3O7–x trilayers as the interlayer magnetic coupling is reduced by increasing the insulator thickness (tI). Althou...
Nonlinear response of a superconducting filter to a wide band excitation
Passive superconducting filters are inherently nonlinear devices that distort information-bearing signals and give rise to spectral broadening. Wide band signals efficiently probe both the causes and ...
Passive superconducting filters are inherently nonlinear devices that distort information-bearing signals and give rise to spectral broadening. Wide band signals efficiently probe both the causes and ...
Magnetoresistance of atomic-scale electromigrated nickel nanocontacts
Appl. Phys. Lett. 88, 062514 (2006); doi:10.1063/1.2172232
Published 9 February 2006
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We report measurements of the electron transport through atomic-scale constrictions and tunnel junctions between ferromagnetic electrodes. Structures are fabricated using a combination of e-beam lithography and controlled electromigration. Sample geometries are chosen to allow independent control of electrode bulk magnetizations. As junction size is decreased to the single channel limit, conventional anisotropic magnetoresistance (AMR) increases in magnitude, approaching the size expected for tunneling magnetoresistance (TMR) upon tunnel junction formation. Significant mesoscopic variations are seen in the magnitude and sign of the magnetoresistance, and no evidence is found of large ballistic magnetoresistance effects.
©2006 American Institute of Physics
| History: | Received 4 October 2005; revised 30 December 2005; accepted 12 January 2006; published 9 February 2006 |
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- M. Julliere,
Phys. Lett. A 54, 225 (1955) . - N. García, M. Muñoz, and Y.-W. Zhao, Phys. Rev. Lett. 82, 2923 (1999).
- W. F. Egelhoff, Jr., L. Gan, H. Ettedgui, Y. Kadmon, C. J. Powell, P. J. Chen, A. J. Shapiro, R. D. McMichael, J. J. Mallett, T. P. Moffat, M. D. Stiles, and E. B. Svedberg, J. Appl. Phys. 95, 7554 (2004).
- M. Viret, S. Berger, M. Gabureac, F. Ott, D. Olligs, I. Petej, J. F. Gregg, C. Fermon, G. Francinet, and G. Le Goff, Phys. Rev. B 66, 220401(R) (2002).
- C.-S. Yang, C. Zhang, J. Redepenning, and B. Doudin, Appl. Phys. Lett. 84, 2865 (2004).
- O. Ozatay, P. Chalsani, N. C. Emley, I N. Krivorotov, and R. A. Buhrman, J. Appl. Phys. 95, 7315 (2004).
- M. I. Montero, R. K. Dumas, G. Liu, M. Viret, O. M. Stoll, W. A. A. Macedo, and I. K. Schuller, Phys. Rev. B 70, 184418 (2004).
- F. J. Jedema, A. T. Filip, and B. J. van Wees,
Nature 410, 345 (2001) . - A. N. Pasupathy, R. C. Bialczak, J. Martinek, J. E. Grose, L. A. K. Donev, P. L. McEuen, and D. C. Ralph,
Science 306, 86 (2004) . - H. Park, A. K. L. Lim, A. P. Alivisatos, J. Park, and P. L. McEuen, Appl. Phys. Lett. 75, 301 (1999).
- D. R. Strachan, D. E. Smith, D. E. Johnston, T.-H. Park, M. J. Therien, D. A. Bonnell, and A. T. Johnson, Appl. Phys. Lett. 86, 043109 (2005).
- M. Gabureac, M. Viret, F. Ott, and C. Fermon, Phys. Rev. B 69, 100401 (2004).
- D. Jacob, J. Fernández-Rossier, and J. J. Palacios, Phys. Rev. B 71, 220403(R) (2005).
- E. Y. Tsymbal, A. Sokolov, I. F. Sabirianov, and B. Doudin, Phys. Rev. Lett. 90, 186602 (2003).
- T.-S. Kim, Phys. Rev. B 72, 024401 (2005).
- K. I. Bolotin, F. Kuemmeth, A. N. Pasupathy, and D. C. Ralph, cond-mat/0510410 (2005).
