Abstract
Magnetic relaxation experiments in TlBaCaCuO superconductors (2212 and 2223 single phases, polycrystalline and thin film materials) are reported. The results give evidence of a crossover from thermally to non-thermally activated flux motion. The temperature independent magnetic relaxation rates (below ≃ 6 K and ≃ 3 K for the 2212 and 2223 phase respectively) compare well with the values calculated according to the theories of flux motion by quantum tunneling. The effect of anisotropy and magnetic field on the quantum creep rate is discussed.
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References
Anderson, P. W. and Kim, Y. B. (1964) Hard superconductivity: Theory of the motion of Abrikosov flux lines, Rev. Mod. Phys. 36, 39.
Mota, A. C., Pollini, A., Visani, P., Müller, K. A. and Bednorz, J. G. (1987) Low-field magnetic relaxation effects in high-Tc superconductors Sr-La-Cu-O and Ba-La-Cu-O, Phys. Rev. B 36, 4011.
Mota, A. C., Pollini, A., Visani, P., Müller, K. A. and Bednorz, J. G. (1988) Relaxation effects in high-Tc superconductors, Physica Scrlpta 37, 823.
Mota, A. C., Pollini, A., Visani, P., Müller, K. A. and Bednorz, J. G. (1988) Relaxation of the magnetization in high-Tc superconductors, Physica C 153–155, 67.
Hamzic, A., Fruchter, L. and Campbell, I. A. (1990) Non-activated magnetic relaxation in a high-Tc superconductor, Nature (London) 345, 515.
FVuchter, L., Malozemoff, A. P., Campbell, I. A., Sanchez, J., Konczykowski, M., Griessen, R. and Holtzberg, F. (1991) Low-temperature magnetic relaxation in YBa2Cu3O7-δ: Evidence for quantum tunneling of vortices, Phys. Rev. B 43, 8709.
Mitin, A. V. (1987) Zh. Eksp. Teor. Fiz. 93, 590.
Mitin, A. V. (1987) Temperature dependences of flux creep and critical current in molybdenum sulfides, Sov. Phys. JETP 66, 335.
Mota, A. C., Juri, G., Visani, P., Pollini, A., Teruzzi, T., Aupke, K. and Hilti, B. (1991) Flux motion by quantum tunneling, Physica C 185–189, 343.
Pollini, A., Mota, A. C., Visani, P., Pittini, R., Juri, G., Teruzzi, T. and Franse, J. J. M.(1991) Novel magnetic relaxation effects in superconducting UPt3 single crystals, Physica C 185–189,2625.
Caldeira, A. O. and Leggett, A. J. (1981) Influence of dissipation on quantum tunneling in macroscopic systems, Phys, Rev, Lett., 46, 211.
Caldeira, A. O. and Leggett, A. J. (1983) Quantum tunneling in a dissipative system, Ann, Phys. (N.Y.) 149, 374.
Blatter, G., Geshkenbein, V. B. and Vinokur, V. M. (1991) Quantum collective creep, Phys. Rev. Lett. 66, 3297.
Blatter, G. and Geshkenbein, V. B. (1991) Quantum collective creep in anisotropic superconductors,Physica C 185–189, 2351.
Blatter, G. and Geshkenbein, V. B. (1993) Quantum collective creep: Effects of anisotropy, layering and finite T, Phys. Rev. B 47, 2725.
Farrell, D. E., Rice, J. P., Ginsberg, D. M. and Liu, J. Z. (1990) Experimental evidence of a dimensional crossover in YBa2Cu3O7-δ, Phys. Rev. Lett. 64, 1573.
Laborde, O., Monceau, P., Potel, M., Padiou, J., Gougeon, P., Levet, J. C. and Noel, H. (1989) Anisotropic properties of single crystals of (T1O)mBa2Ca2Cu3O8, Physica C 162–164, 1619.
Matsubara, I., Tanigawa, H., Ogura, T., Yamashita, H., Kinoshita, M. and Kawai, T.(1992) Upper critical field and anisotropy of the high-Tc Bi2Sr2Ca2Cu3Ox phase, Phys. Rev. B 45, 7414.
Busch, R., Ries, G., Werthner, H., Kreiselmeyer, G. and Saemann-Ischenko, G. (1992) New aspects of the mixed state from six-terminal measurements on Bi2Sr2CaCu2Ox single crystals, Phys. Rev. Lett. 69, 522.
Farrell, D. E., Beck, R. G., Booth, M. F., Allen, C. J., Bukowski, E. D. and Ginsberg, D. M. (1990) Superconducting effective mass anisotropy in Tl2Ba2CaCu2Ox, Phys. Rev. B 42, 6758.
Feigel’man, M. V., Geshkenbein, V. B. and Larkin, A. I. (1990) Pinning and creep in layered superconductors, Physica C 167, 177.
Vinokur, V. M., Kes, P. H. and Koshelev, A. E. (1990) Flux pinning and creep in very anisotropic high temperature superconductors, Physica C 168, 29.
Prost, D., Fruchter, L., Campbell, I. A., Motohira, N. and Konczykowski, M. (1993) Quantum tunneling of flux lines in single crystal Bi2Sr2CaCu2O8 with columnar defects, Phys. Rev. B 47, 3457.
Aupke, K., Teruzzi, T., Visani, P., Amann, A., Mota, A. C. and Zavaritsky, V. N. (1993) Quantum creep in a Bi2Sr2CaCu2Ox single crystal, Physica C 209, 255.
Garcia, A., Zhang, X. X., Testa, A. M., Fiorani, D. and Tejada, J. (1992) Experimental evidence of quantum tunneling in TlBaCaCuO, J. Phys.: Conies. Matter 4, 10341.
Tejada, J., Chudnovsky, E. M. and Garcia, A. (1993) Quantum tunneling of vortices in theTl2CaBa2Cu2O8 superconductor, Phys. Rev. B 47, 11552.
Kopelevich, Y., Moehlecke, S. and Torres, J. H. S. (1993) Flux line melting in Bi2Sr2Ca2CU3O10,Phys. Rev. B 49, 1495.
Mota, A. C., Pollini, A., Juri, G., Visani, P. and Hilti, B. (1990) Fast decay of supercurrents in high-Tc, heavy fermion and organic superconductors, Physica A 168, 298.
Moehlecke, S. and Kopelevich, Y. (1994) Magnetic field dependent quantum flux creep in Bi2Sr2Ca2Cu3O10, Physica C 222, 149.
Feigel’man, M. V., Geshkenbein, V. B., Larkin, A. I. and Levit, S. (1993) Pis’ma Zh. Eks. Teor. Fiz. 57, 699.
Feigel’man, M. V., Geshkenbein, V. B., Larkin, A. I. and Levit, S. (1993) Hall tunneling of vortices in high-Tc superconductors, Sov. Phys. JETP Lett. 57, 711.
Ao, P. and Thouless, D. J. (1994) Tunneling of quantized vortices: Roles of pinning and dissipation, Phys, Rev. Lett. 72, 132.
Grabert, H., Weiss, U. and Hänggi, P. (1984) Quantum tunneling in dissipative systems at finite temperatures, Phys. Rev. Lett. 52, 2193.
Parkin, S. S. P., Lee, V. Y., Engler, E. M., Nazzal, A. I., Huang, T. C, Gorman, G., Savoy, R. and Beyers, R. (1988) Bulk superconductivity at 125 K in Tl2Ba2Ca2Cu3Ox, Phys. Rev. Lett. 60, 2539.
Xin, Y., Li, Y. F., Gu, D. X., Pederson, D. O. and Sheng, Z. Z. (1991) Optimum preparation and elemental addition for Tl-based 2223 phase Tl2Ba2Ca2Cu3O10-δ, Physic C 184, 185.
Thompson, J. R., Brynestad, J., Kroeger, D. M., Kim, Y. C., Sekula, S. T., Christen, D. K. and Specht, E. D. (1989) Superconductivity, intergrain and intragrain current densities of Tl2Ba2Ca2Cu3O10+δ and Tl2Ba2CaCu2O8+δ materials, Phys. Rev. B 39, 6652.
Manzel, M., Bruchlos, H., Steinbeiβ, E., Eick, T., Klinger, M., Fuchs, J. and Kley, B. (1992) TiBaCaCuO-films [sic] for passive microwave devices, Physica C 201, 237.
Qui, C. Y. and Shih, I. (1988) Formation of Tl-Ca-Ba-Cu-O films by diffusion of Tl into rfsputtered Ca-Ba-Cu-O, Appl. Phys. Lett. 53, 1122.
Harshman, D. R. and Mills, Jr., A. P. (1992) Concerning the nature of high-Tc superconductivity:Survey of experimental properties and implications for interlayer coupling, Phys. Rev. B 45, 10684.
Tinkham, M. and Lobb, C. J. (1989) Physical properties of the new superconductors, Solid State Phys. 42, 91.
Clem, J. (1988) Granular and superconducting-glass properties of the high-temperature superconductors, Physica C 153–155, 50.
Jung, J., Mohamed, M. A.-K. and Franck, J. P. (1990) Josephson vortex-current interaction in Y1Ba2Cu3O7 at low magnetic fields, J. Magn. Magn. Mater. 90–91, 689.
Zhang, X. X., Garcia, A., Tejada, J., Xin, Y. and Wong, K. W. (1994) Experimental evidence of quantum tunneling of 2D vortices up to 10 K in bulk Tl2Ba2Ca2Cu3O10 superconductor, Physica C 232, 99.
Garcia, A., Zhang, X. X., Tejada, J., Manzel, M. and Bruchlos, H. (1994) Low-temperature quantum relaxation of single 2D vortices in an epitaxial Tl2Ba2Ca2Cu3O10 thin-film, Phys. Rev. B 50, in press.
Uji, S., Aoki, H., Takebayashi, S., Tanaka, M. and Hashimoto, M. (1993) Flux creep by quantum tunneling in YBa2Cu3O7-δ, Physica C 207, 112.
Mota, A. C, Juri, G., Pollini, A., Aupke, K., Teruzzi, T., Visani, P. and Hilti, B. (1992) Quantum and classical creep in high-Tc and organic superconductors, Physica Scripta 45, 69.
See also Fruchter, L., Prost, D. and Campbell, I. A. (1994) Flux tunneling rate in superconductors (Proceedings of M2S-HTSC IV International Conference Grenoble 1994), Physica C, in press.
Daemen, L. L., Bulaevskii, L. N., Maley, M. P. and Coulter, J. Y. (1993) Critical current of Josephson-coupled systems in perpendicular fields, Phys. Rev. Lett. 70, 1167.
Daemen, L. L., Bulaevskii, L. N., Maley, M. P. and Coulter, J. Y. (1993) Josephson-coupled systems in perpendicular magnetic fields, Phys. Rev. B 47, 11291.
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Fiorani, D., Garcia, A., Zhang, X.X., Testa, A.M., Tejada, J. (1995). Quantum Tunneling of Vortices in High-T c Superconductors: Magnetic Relaxation Experiments in TlBaCaCuO Compounds. In: Gunther, L., Barbara, B. (eds) Quantum Tunneling of Magnetization — QTM ’94. NATO ASI Series, vol 301. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0403-6_24
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DOI: https://doi.org/10.1007/978-94-011-0403-6_24
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