Intrinsic Josephson junctions in the iron-based multi-band superconductor (V 2 Sr 4 O 6 )Fe 2 As 2

Nature Physics

Volumn 10, Issue 9, 2014, Pages 644-647

  Moll, Philip J W ^a   Zhu, Xiyu ^b   Cheng, Peng ^c,d   Wen, Hai Hu ^b,c   Batlogg, Bertram ^a  

^a ETH ZURICH   (Switzerland)

^b NANJING UNIVERSITY   (China)

^c INSTITUTE OF PHYSICS   (China)

^d RENMIN UNIVERSITY OF CHINA   (China)

Author keywords

[No Author keywords available]

Indexed keywords

BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; COPPER; COPPER COMPOUNDS; CRYSTAL STRUCTURE; JOSEPHSON JUNCTION DEVICES; QUANTUM COMPUTERS; QUANTUM OPTICS; STRONTIUM COMPOUNDS; SUPERCONDUCTING FILMS; TECHNETIUM COMPOUNDS; TERAHERTZ WAVES; VORTEX FLOW;

EXPERIMENTAL EVIDENCE; HIGH TC SUPERCONDUCTORS; INTRINSIC JOSEPHSON JUNCTION; INTRINSIC JUNCTIONS; JOSEPHSON VORTEX LATTICES; LAYERED SUPERCONDUCTOR; MULTI-BAND SUPERCONDUCTORS; PERIODIC OSCILLATION;

IRON-BASED SUPERCONDUCTORS;

EID: 84904528457     PISSN: 17452473     EISSN: 17452481     Source Type: Journal    
DOI: 10.1038/NPHYS3034     Document Type: Article

References (30)

1. Tachiki, M. & Takahashi, S. Strong vortex pinning intrinsic in high-Tc oxide superconductors. Solid State Commun. 70, 291-295 (1989).
2. Feinberg, D. & Villard, C. Intrinsic pinning and lock-in transition of flux lines in layered type-II superconductors. Phys. Rev. Lett. 65, 919-922 (1990).
3. Kleiner, R. & Müller, P. Intrinsic Josephson effects in high-Tc superconductors. Phys. Rev. B 49, 1327-1343 (1994).
4. Kwok,W. K. et al. Direct observation of intrinsic pinning by layered structure in single-crystal YBa2Cu3O7-. Phys. Rev. B 67, 390-393 (1991).
5. Tonouchi, M. Cutting-edge terahertz technology. Nature Photon. 1, 97-105 (2007).
6. Vedeneev, S. & Maude, D. In-plane current-voltage characteristics and oscillatory Josephson-vortex flow resistance in La-free Bi2CxSr2-xCuO6C- single crystals in high magnetic fields. Phys. Rev. B 77, 064511 (2008).
7. Li, S-X. et al. Observation of macroscopic quantum tunneling in a single Bi2Sr2CaCu2O8C- surface intrinsic Josephson junction. Phys. Rev. Lett. 99, 037002 (2007).
8. Schlenga, K. et al. Subgap structures in intrinsic Josephson junctions of Tl2Ba2Ca2Cu3O10Cd and Bi2Sr2CaCu2O8Cd . Phys. Rev. Lett. 76, 4943-4946 (1996).
9. Ooi, S., Mochiku, T. & Hirata, K. Periodic oscillations of Josephson-vortex flow resistance in Bi2Sr2CaCu2O8Cy . Phys. Rev. Lett. 89, 247002 (2002).
10. Koshelev, A. Magnetic oscillations of critical current in intrinsic Josephson-junction stacks. Phys. Rev. B 75, 214513 (2007).
11. Machida, M. Dynamical matching of Josephson vortex lattice with sample edge in layered high-Tc superconductors: Origin of the periodic oscillation of flux flow resistance. Phys. Rev. Lett. 90, 037001 (2003).
12. Ota, Y., Machida, M., Koyama, T. & Matsumoto, H. Theory of vortex structure in Josephson junctions with multiple tunneling channels: Vortex enlargement as a probe of -s-wave superconductivity. Phys. Rev. B 81, 014502 (2010).
13. Inomata, K. et al. Macroscopic quantum tunneling in a d-wave high-Tc Bi2Sr2CaCu2O8C- superconductor. Phys. Rev. Lett. 95, 107005 (2005).
14. Leggett, A. J. Number-phase fluctuations in two-band superconductors. Prog. Theor. Phys. 36, 901-930 (1966).
15. Nakamura, H., Machida, M., Koyama, T. & Hamada, N. First-principles study for the anisotropy of iron-based superconductors toward power and device applications. J. Phys. Soc. Jpn 78, 123712 (2009).
16. Ota, Y., Machida, M. & Koyama, T. Variety of c-axis collective excitations in layered multigap superconductors. Phys. Rev. Lett. 106, 157001 (2011).
17. Koyama, T., Ota, Y. & Machida, M. I-V characteristics in multi-gap intrinsic Josephson junction stacks. Phys. C Supercond. 470, 1481-1484 (2010).
18. Ozyuzer, L. et al. Emission of coherent THz radiation from superconductors. Science 318, 1291-1293 (2007).
19. Kashiwaya, H. et al. C-axis critical current of a PrFeAsO0.7 single crystal. Appl. Phys. Lett. 96, 202504 (2010).
20. Iida, K. et al. Oxypnictide SmFeAs(O,F) superconductor: A candidate for high-field magnet applications. Sci. Rep. 3, 2139 (2013).
21. Blatter, G., Feigel'man, M., Geshkenbein, V., Larkin, A. & Vinokur, V. Vortices in high-temperature superconductors. Rev. Mod. Phys. 66, 1125-1387 (1994).
22. Moll, P. J.W. et al. Transition from slow Abrikosov to fast moving Josephson vortices in iron pnictide superconductors. Nature Mater. 12, 134-138 (2013).
23. Moll, P. J.W. et al. High magnetic-field scales and critical currents in SmFeAs(O,F) crystals. Nature Mater. 9, 628-633 (2010).
24. Zhu, X. et al. Transition of stoichiometric Sr2VO3FeAs to a superconducting state at 37.2 K. Phys. Rev. B 79, 220512 (2009).
25. Nakamura, H. & Machida, M. Magnetic ordering in blocking layer and highly anisotropic electronic structure of high-Tc iron-based superconductor Sr2VFeAsO3: LDACU study. Phys. Rev. B 82, 094503 (2010).
26. Qian, T. et al. Quasinested Fe orbitals versus Mott-insulating V orbitals in superconducting Sr2VFeAsO3 as seen from angle-resolved photoemission. Phys. Rev. B 83, 140513 (2011).
27. Kadowaki, K. et al. Dynamical properties of Josephson vortices in mesoscopic intrinsic Josephson junctions in single crystalline Bi2Sr2CaCu2O8C- . Phys. C Supercond. 4370-438, 111-117 (2006).
28. Nagao, M. et al. Periodic oscillations of Josephson-vortex flow resistance in oxygen-deficient YBa2Cu3Ox . Phys. Rev. B 74, 054502 (2006).
29. Rapp, M., Murk, A., Semerad, R. & Prusseit,W. c-axis conductivity and intrinsic Josephson effects in YBa2Cu3O7-. Phys. Rev. Lett. 77, 928-931 (1996).
30. Han, F. et al. Structural and transport properties of Sr2VO3- FeAs superconductors with different oxygen deficiencies. Sci. China A 53, 1202-1206 (2010).