Phase Diagram and Activation Energy for Vortex Pinning in Nb/(Co,Pd) Superconductor-Ferromagnet Bilayer

• Authors: Y. Syryanyy , M. Aleszkiewicz , Marta Cieplak , L. Zhu , C. Chien
• Languages of publication: EN

Abstracts

EN

Using the magnetoresistance measurements we study the phase transition line and the activation energy for vortex pinning in superconductor/ferromagnet bilayer, built of a ferromagnetic Co/Pd multilayer with perpendicular magnetic anisotropy, and a niobium film, with insulating layer in-between to eliminate proximity effect. The domain width is reversibly pre-defined using the angle-dependent demagnetization. We find that the enhancement of the activation energy for vortex pinning by magnetic domains is rather modest, by a factor of about 2.1. We attribute this to large domain width, and large dispersion of the domain width in this bilayer.

Keywords

EN

74.25.F-; 74.25.N-; 74.25.Wx; 74.62.-c; 74.70.-b; 74.78.-w; 74.78.Fk; 75.70.Kw; 75.70.-i

Discipline

• 75.70.-i: Magnetic properties of thin films, surfaces, and interfaces(for magnetic properties of nanostructures, see 75.75.-c)
• 74.78.-w: Superconducting films and low-dimensional structures
• 74.78.Fk: Multilayers, superlattices, heterostructures
• 75.70.Kw: Domain structure (including magnetic bubbles and vortices)(for domain structure in ferroelectricity and antiferroelectricity, see 77.80.Dj)
• 74.70.-b: Superconducting materials other than cuprates(for cuprates, see 74.72.-h; for superconducting films, see 74.78.-w)
• 74.25.Wx: Vortex pinning (includes mechanisms and flux creep)
• 74.25.F-: Transport properties
• 74.25.N-: Response to electromagnetic fields
• 74.62.-c: Transition temperature variations, phase diagrams

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4a
• Pages: A-123-A-127

Dates

published

2014-10

Contributors

author

Y. Syryanyy

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Aleszkiewicz

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

Marta Cieplak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

L. Zhu

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA

author

C. Chien

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA

References

• [1] I.F. Lyuksyutov, V.L. Pokrovsky, Adv. Phys. 54, 67 (2004), doi: 10.1080/00018730500057536
• [2] M. Velez, J.I. Martín, J.E. Villegas, A. Hoffmann, E.M. González, J.L. Vicent, Ivan K. Schuller, J. Magn. Magn. Mater. 320, 2547 (2008), doi: 10.1016/j.jmmm.2008.06.013
• [3] A. Yu. Aladyshkin, A.V. Silhanek, W. Gillijns, V.V. Moshchalkov, Supercond. Sci. Technol. 22, 053001 (2009), doi: 10.1088/0953-2048/22/5/053001
• [4] A.I. Buzdin, Rev. Mod. Phys. 77, 935 (2005), doi: 10.1103/RevModPhys.77.935
• [5] A.I. Buzdin, A.S. Mel'nikov, Phys. Rev. B 67, 020503(R), (2003), doi: 10.1103/PhysRevB.67.020503
• [6] A. Yu. Aladyshkin, A.I. Buzdin, A.A. Fraerman, A.S. Mel'nikov, D.A. Ryzhov, A.V. Sokolovet, Phys. Rev. B 68, 184508 (2003), doi: 10.1103/PhysRevB.68.184508
• [7] A. Yu. Aladyshkin, V.V. Moshchalkov, Phys. Rev. B 74, 064503 (2006), doi: 10.1103/PhysRevB.74.064503
• [8] Z. Yang, M. Lange, A. Volodin, R. Szymczak, V.V. Moshchalkov, Nature Mater. 3, 793 (2004), doi: 10.1038/nmat1222
• [9] W. Gillijns, A.Yu. Aladyshkin, M. Lange, M.J. Van Bael, V.V. Moshchalkov, Phys. Rev. Lett. 95, 227003 (2005), doi: 10.1103/PhysRevLett.95.227003
• [9a] W. Gillijns, A. Yu. Aladyshkin, A.V. Silhanek, V.V. Moshchalkov, Phys. Rev. B 76, 060503(R) (2007), doi: 10.1103/PhysRevB.76.060503
• [10] L.Y. Zhu, Marta Z. Cieplak, C.L. Chien, Phys. Rev. B 82, 060503(R) (2010), doi: 10.1103/PhysRevB.82.060503
• [11] L.N. Bulaevskii, E.M. Chudnovsky, M.P. Maley, Appl. Phys. Lett. 76, 2594 (2000), doi: 10.1063/1.126419
• [12] A. Garcia-Santiago, F. Sanchez, M. Varela, J. Tejada, Appl. Phys. Lett. 77, 2900 (2000), doi: 10.1063/1.1321731
• [13] X.X. Zhang, G.H. Wen, R.K. Zheng, G.C. Xiong, G.J. Lian, Europhys. Lett. 56, 119 (2001), doi: 10.1209/epl/i2001-00496-6
• [14] M. Lange, M.J. Van Bael, V.V. Moshchalkov, Y. Bruynseraede, Appl. Phys. Lett. 81, 322 (2002), doi: 10.1063/1.1492317
• [15] D.B. Jan, J.Y. Coulter, M.E. Hawley, L.N. Bulaevskii, M.P. Maley, Q.X. Jia, B.B. Maranville, F. Hellman, X.Q. Pan, Appl. Phys. Lett. 82, 778 (2003), doi: 10.1063/1.1542674
• [16] M.Z. Cieplak, X.M. Cheng, C.L. Chien, Hai Sang, J. Appl. Phys. 97, 026105 (2005), doi: 10.1063/1.1839631
• [17] M.Z. Cieplak, Z. Adamus, A. Abal'oshev, I. Abal'osheva, M. Berkowski, X.M. Cheng, Hai Sang, C.L. Chien, Phys. Status Solidi C 2, 1650 (2005), doi: 10.1002/pssc.200460806
• [18] M. Feigenson, L. Klein, M. Karpovski, J.W. Reiner, M.R. Beasley, J. Appl. Phys. 97, 10J120 (2005), doi: 10.1063/1.1855701
• [19] V. Vlasko-Vlasov, U. Welp, G. Karapetrov, V. Novosad, D. Rosenmann, M. Iavarone, A. Belkin, W.-K. Kwok, Phys. Rev. B 77, 134518 (2008), doi: 10.1103/PhysRevB.77.134518
• [20] A. Belkin, V. Novosad, M. Iavarone, J. Pearson, G. Karapetrov, Phys. Rev. B 77, 180506 (2008), doi: 10.1103/PhysRevB.77.180506
• [21] V.K. Vlasko-Vlasov, U. Welp, A. Imre, D. Rosenmann, J. Pearson, W.K. Kwok, Phys. Rev. B 78, 214511 (2008), doi: 10.1103/PhysRevB.78.214511
• [22] M.Z. Cieplak, L.Y. Zhu, Z. Adamus, M. Kończykowski, C.L. Chien, Phys. Rev. B 84, 020514(R) (2011), doi: 10.1103/PhysRevB.84.020514
• [23] Y. Syryanyy, L.Y. Zhu, M.Z. Cieplak, C.L. Chien, Acta Phys. Pol. A 118, 399 (2010) http://przyrbwn.icm.edu.pl/APP/PDF/118/a118z2p45.pdf
• [24] M. Tinkham, Introduction to Superconductivity, Dover, New York 2004
• [25] G.M. Maksimova, R.M. Ainbinder, D.Y. Vodolazov, Phys. Rev. B 78, 224505 (2008), doi: 10.1103/PhysRevB.78.224505
• [26] J.W.P. Hsu, A. Kapitulnik, Phys. Rev. B 45, 4819 (1992), doi: 10.1103/PhysRevB.45.4819

Identifiers

DOI

10.12693/APhysPolA.126.A-123