Thermomagnetic Flux-jump Instabilities And Second Magnetization Peak In Bi2sr2cacu2o8 High-tc Superconducting Crystals

Measurements of the magnetization hysteresis loop performed on Bi2Sr2CaCu2O8 high-Tc superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T > 40 K. In this work we demonstrate their thermomagnetic origin. It is also shown that the low-field hollow in the magnetization hysteresis loops measured at T < 40 K and leading to the so-called "second magnetization peak," is the manifestation of a thermomagnetic instability effect. It is suggested that the plastic vortex motion triggers the magnetic instabilities.1163-4261276Higgins, M.J., Bhattacharya, S., (1996) Physica C, 257, p. 232Ertas, D., Nelson, D.R., (1996) Physica C, 272, p. 79Giller, D., Shaulov, A., Prozorov, R., Abulafia, Y., Wolfus, Y., Burlachkov, L., Yeshurun, Y., Greene, R.L., (1997) Phys. Rev. Lett., 79, p. 2542Vinokur, V., Khaykovich, B., Zeldov, E., Konczykowski, M., Doyle, R.A., Kes, P.H., (1998) Physica C, 295, p. 209Koch, C.C., Scarbrough, J.O., Kroeger, D.M., (1974) Phys. Rev. B, 9, p. 888Kartascheff, N., (1975) J. low Temp. Phys., 21, p. 203Modler, R., Gegenwart, P., Lang, M., Deppe, M., Weiden, M., Luhmann, T., Geibel, C., Takahashi, S., (1996) Phys. Rev. Lett., 76, p. 1292Dilley, N.R., Herrmann, J., Han, S.H., Maple, M.B., Spagna, S., Diederichs, J., Sager, R.E., (1996) Physica C, 265, p. 150Kopelevich, Y., Moehlecke, S., (1998) Phys. Rev. B, 58, p. 2834Khaykovich, B., Zeldov, E., Majer, D., Li, T.W., Kes, P.H., Konczykowski, M., (1996) Phys. Rev. Lett., 76, p. 2555Kopelevich, Y., Esquinazi, P., (1998) J. low Temp. Phys., 113, p. 1Esquinazi, P., Höhne, R., Kopelevich, Y., Pan, A., Ziese, M., (1999) Phys. and Mater. Sci. of Vortex States, , Flux Pinning, and Dynamics: Proc. of the NATO Adv. Study Inst., Kusadasi, Turkey, July 26-Aug. 8, 1998, edited by S. Bose and R. Kossowski, KluwerEsquinazi, P., Setzer, A., Fuchs, D., Kopelevich, Y., Zeldov, E., Assmann, C., to be publishedMints, R.G., Rakhmanov, A.L., (1981) Rev. Mod. Phys., 53, p. 551Wipf, S.L., (1991) Cryogenics, 31, p. 936Wu, W., Li, F., Jia, Y., Zhou, G., Qian, Y., Qin, Q., Zhang, Y., (1993) Physica C, 213, p. 133Kopelevich, Y., Makarov, V.V., Moehlecke, S., (1997) Physica C, 277, p. 225Wiesinger, H.P., Sauerzopf, F.M., Weber, H.W., (1992) Physica C, 203, p. 121Anders, S., Parthasarathy, R., Jaeger, H.M., Guptasarma, P., Hinks, D.G., Van Veen, R., (1998) Phys. Rev. B, 58, p. 6639Yeshurun, Y., Bontemps, N., Burlachkov, L., Kapitulnik, A., (1994) Phys. Rev. B, 49, p. 1548McHenry, M.E., Lessure, H.S., Maley, M.P., Coulter, J.Y., Tanaka, I., Kojima, H., (1992) Physica C, 190, p. 403Nideröst, M., Frassanito, R., Saalfrank, M., Mota, A.C., Blatter, G., Zavaritsky, V.N., Li, T.W., Kes, P.H., (1998) Phys. Rev. Lett., 81, p. 3231Kopylov, V.N., Koshelev, A.E., Schegolev, I.F., Togonidze, T.G., (1990) Physica C, 170, p. 291Burlachkov, L., (1993) Phys. Rev. B, 47, p. 8056Zeldov, E., Larkin, A.I., Geshkenbein, V.B., Konczykowski, M., Majer, D., Khaykovich, B., Vinokur, V.M., Shtrikman, H., (1994) Phys. Rev. Lett., 73, p. 1428Gough, C.E., (1987) Int. J. Mod. Phys. B, 1, p. 891Harrison, R.B., Pendrys, J.P., Wright, L.S., (1975) J. low Temp. Phys., 18, p. 113Niderst, M., Suter, A., Visani, P., Mota, A.C., Blatter, G., (1996) Phys. Rev. B, 53, p. 13Li, T.W., Menovsky, A.A., Franse, J.J.M., Kes, P.H., (1996) Physica C, 257, p. 179Jensen, H.J., Brass, A., Berlinsky, A.J., (1988) Phys. Rev. Lett., 60, p. 1676Nori, F., (1996) Science, 271, p. 1373Matsuda, T., Harada, K., Kasai, H., Kamimura, O., Tonomura, A., (1996) Science, 271, p. 1393Tsuboi, T., Hanaguri, T., Maeda, A., (1998) Phys. Rev. Lett., 80, p. 4550Forgan, E.M., Wylie, M.T., Lloyd, S., Lee, S.L., Cubitt, R., (1996) Czech. J. Phys., 46 (S3), p. 1571Pardo, F., De La Cruz, F., Gammel, P.L., Bucher, E., Bishop, D.J., (1998) Nature, 396, p. 348Koshelev, A.E., (1992) Physica C, 198, p. 371Koshelev, A.E., Vinokur, V.M., (1994) Phys. Rev. Lett., 73, p. 3580Mazilu, A., Safar, H., Lopez, D., Kwok, W.K., Crabtree, G.W., Guptasarma, P., Hinks, D.G., (1998) Phys. Rev. B, 58, p. 8913Doyle, R.A., Rycroft, S.F.W.R., Doyle, T.B., Zeldov, E., Tamegai, T., Ooi, S., (1998) Phys. Rev. B, 58, p. 135Fuchs, D.T., Doyle, R.A., Zeldov, E., Rycroft, S.F.W.R., Tamegai, T., Ooi, S., Rappaport, M.L., Myasoedov, Y., (1998) Phys. Rev. Lett., 81, p. 3944Wurlitzer, M., Mrowka, F., Esquinazi, P., Rogacki, K., Dabrowski, B., Zeldov, E., Tamegai, T., Ooi, S., (1996) Z. Phys. B, 101, p. 56