本文指出,影响第二类超导体中磁通运动势垒函数U(T,B,J)的并非传输电流J的全部,而是其中和被钉住的磁通线相关的部分Jp=J-E/ρf.由此可以推出一个普适于第二类超导体的约化形式的统一物质方程,y=xexp[-γ(1+y-x)p].它与大量实验结果符合,初步成功地解释了伏安特性正负曲率共存,钉扎力的标度律,反常霍尔效应,磁通蠕动的温度关系,交流磁化率的振幅效应等重要现象.用此方程导出的在相变温度TgYBCO=78K两侧的1100条等温伏安特性曲线,按照涡旋玻璃和玻色玻璃的标度方法都能约化成两条折叠曲线并与IBM实验室Koch等著名的实验结果定量符合,显示了"一式两相".与此方程形式相似的函数也可以描述分数量子霍尔效应样品的I(V)特性和超导-正常态转变的伏安特性。
参考文献
| [1] | G Blatter;MVFeigel＇manVBGeshkenbein;A I Larkin;V M Vinokur .[J].Reviews of Modern Physics,1994,66:1125. |
| [2] | E H Brandt .[J].Reports on Progress in Physics,1995,58:1465. |
| [3] | L F Cohen;Henrik Jeldtoft Jensen .[J].Reports on Progress in Physics,1997,60:1581. |
| [4] | P W Anderson .[J].Physical Review Letters,1962,9:309. |
| [5] | P W Anderson;Y B Kim .[J].Reviews of Modern physics,1964,36:39. |
| [6] | E Zeldov .[J].Physical Review Letters,1989,62:3093. |
| [7] | A Gurevich;V M Vinokur .[J].Physical Review Letters,1999,83:3037. |
| [8] | U C Tauber;DRNelson .[J].Physical Review,1995,B68:16106. |
| [9] | D Yin;WSchauer;V Windte;HKupfer,SZhangandJChen .[J].Zeitschrift für Physik,1994,B94:249. |
| [10] | W. Bai;G. Li;H. Chen;D. Yin;G. Lu;K. Chen;C. Li .Nonlinear I-V characteristic and magnetic relaxation in high-T{sub}c superconductors[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2 Pt.2):2647-2650. |
| [11] | H D Chen;YWang;D L Yin;Y L Zhu, K X Chen, C Y Li, andG Lu .[J].Physical Review,2000,B61:1468. |
| [12] | J Chen;DYin;C Y Li .[J].Journal of Physics:Condensed Matter,1995,7:8331. |
| [13] | Y. Wang;H. D. Chen;D. L. Yin;K. X. Chen;G. Lu;W. P. Bai;C. Y. Li .Scaling of vortex transport properties and nonlinear ac response of high-temperature superconductors[J].The European physical journal, B. Condensed matter physics,2000(2):221-225. |
| [14] | R H Koch .[J].Physical Review Letters,1989,63:1511. |
| [15] | D R Nelson;VMVinokur .[J].Physical Review Letters,1992,68:2398. |
| [16] | D R Nelson et al.[J].Physical Review,1993,B48:13060. |
| [17] | D M Grayson;DCTsui .[J].Physical Review Letters,1998,80:1062. |
| [18] | H H Wen;WLYang;Z X Zhao;Y M Li Tsui .[J].Physical Review Letters,1999,82:410. |
| [19] | Chunguang Li.[A].北京,2000:165-168. |
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