在0～9T范围内测量了磁场平行于c-轴时Li掺杂熔融织构YBCO样品面内电阻的温度关系.我们用A～H模型拟合实验数据.结果表明,以R/Rn=20%作为高阻区和低阻区的分界线,R～T曲线可分别用R=Rn{I0[CH-p(1-t)q]}-2来描述,其中Rn是正常态的电阻Rn=-5.36+0.145T.p=0.78,1.88 和q=1.5, 3.5分别是高阻区和低阻区的拟合参数.
We have measured the temperature dependence of in-plane resistivity for Li-doped MTG-YBCO crystals in the magnetic field up to 9T parallel to c-axis. The R～T curves are fitted piecewise in two parts based on A～H model, R/Rn=[I0(γ0/2)]-2, where Rn is the normal state resistivity, γ0=U0/KBT, and I0 is the modified Bessel function. R=Rn{I0[CH-p(1-t)q]}-2 is achieved with Rn=-5.36+0.145T, p=0.78,1.88 and q=1.5,3.5 for high- and low-resistivity region, respectively.
参考文献
| [1] | Y Yeshurun;A P Malozemoff .[J].Physical Review Letters,1988,60:2202. |
| [2] | T T M Palstra;B Batlogg;R B van Dover;L F Schneemeyer,,J V Waszczak .[J].Physical Review B,1990,41:6621. |
| [3] | K A M ller;M Takashige;J G Bednorz .[J].Physical Review Letters,1987,58:1143. |
| [4] | J Mirkovic;K Kimura;K Kadowaki .[J].Physical Review Letters,1999,82:2374. |
| [5] | K E Gray;D H Kim .[J].Physical Review Letters,1993,70:1693. |
| [6] | G Briceo;M F Crommie;A Zettl .[J].Physical Review Letters,1991,66:2164. |
| [7] | R Ikeda;T Ohmi;T Tsuneto .[J].Physical Review Letters,1991,67:3874. |
| [8] | K Kadowaki;S L Yuan;K Kishio;T Kimura,,K Kitazawa .[J].Physical Review B,1994,50:7230. |
| [9] | V Ambegaokar;B I Halperin .[J].Physical Review Letters,1969,22:1364. |
| [10] | M Tinkham .[J].Physical Review Letters,1988,61:1658. |
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