本文研究了HgSr2Ca0.7Y0.3Cu1.8Re0.2Oz和Hg(Ba0.5Sr0.5)2CaCu1.8Re0.2Oz(Hg1212)超导体的磁化弛豫,发现磁化弛豫偏离了对数时间依赖关系.采用指数弛豫表达式\$M=M0+M1t-α\$,可以很好地拟合Hg基超导体的磁化弛豫.通过比较Hg1212、YBa2Cu3O7-δ和Bi2Sr2CaCu2O8的磁化弛豫行为,研究了磁化弛豫率和钉扎势随CuO2层间距离的变化关系,发现磁化弛豫率随层间距离增大而增大,而钉扎势则随之增大而减小.P.
参考文献
[1] | P W Anderson .[J].Physical Review Letters,1962,9:309. |
[2] | U Atzmony;R D Schll;CKChiang;L J Swartzendruber,and L H Bennett .[J].Journal of Applied Physics,1988(63):4179. |
[3] | Y Abulafia;A Shaulov;YWolfus R;Prozorov, L.Burlachkov, Y.Yeshurun, D.Majer, E.Zeldov, and V.M.Vinokur .[J].Physical Review Letters,1995,75:2404. |
[4] | Y Yeshurun;A P Malozemoff;AShalov .[J].Reviews of Modern Physics,1996,68:911. |
[5] | 李光临,孟立飞,李志强,韩柯,高政祥,张西祥,温戈辉,郑荣坤.熔融织构块材和单晶YBa2Cu3O7在63~75K的磁弛豫性质[J].低温物理学报,2001(03):174-178. |
[6] | A. Daignere;T. Aouaroun;C. Simon .Absence of dynamical crossover in the vortex creep near by the second peak effect in superconducting Hg-1201 single crystals[J].The European physical journal, B. Condensed matter physics,2000(3):397-402. |
[7] | M Chandran .[J].Europhysics Letters,2000(49):494. |
[8] | S Salemsugui;K C Goretta .[J].Journal of Superconductivity,2000(13):367. |
[9] | T Stein;G A Levin;CCAlmasan .[J].Physical Review,2000,B61 |
[10] | Y Yeshurun;A P Malozemoff .[J].Physical Review Letters,1988,60:2202. |
[11] | G Blatter;M V Feigel′man;VBGeshenbein;A I Larkin,and V M Vinokur .[J].Reviews of Modern Physics,1994,66:1125. |
[12] | E Zeldov;NMAmer;GKoren .[J].Applied Physics Letters,1990(56):680. |
[13] | Z N Wang;D L Shi .[J].Physical Review,1993,B48:9782. |
[14] | S Hahakura;J Shimoyama;OShiino;K Kishio .[J].PHYSICA C,1994,233:1. |
[15] | R Hergt;R Hiergeist;JTanbert;H W Neumueller and G Ries .[J].Physical Review,1993,B47:5405. |
[16] | P J Kung;M P Maley;MEMcHenry;J.O.Willis, M.Murakami, and S.Tanaka .[J].Physical Review,1993,B48:13922. |
[17] | W Primak .[J].Journal of Applied Physics,1960(31):1524. |
[18] | E Zeldov et al.[J].Physical Review Letters,1989,62:3093. |
[19] | A P Malazemoff .[J].PHYSICA C,1991,185-189:264. |
[20] | V M Vinokur et al.[J].Physical Review Letters,1991,67:915. |
[21] | G Blatter;V Geshkenbein .[J].Physical Review,1993,B47:2725. |
[22] | D Prost;L Fruchter;IACampbell .[J].Physical Review,1993,B47:3457. |
[23] | W E Lawrence;S Doniach.Proc.12th Int.Conf.Low Temp.Phys.Ed E[C].Kanda (Kyoto,Academic Press of Japan,1972:361. |
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