SUPERCONDUCTING ENERGY-GAP OF SINGLE-CRYSTAL BI2SR2CA1CU2O8+DELTA BY ELECTRON-TUNNELING

被引：10
|
作者：
ESCUDERO, R
GUARNER, E
MORALES, F
机构：
[1] Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, D.F. MéxicoMexico, 04510
来源：
PHYSICA C | 1990年 / 166卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(90)90545-P
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report measurements of the superconducting energy gap in a Bi2Sr2Ca1Cu2O8+δ single crystal using point contact electron tunneling. We show data related to the energy gap spectra in these new ceramics. The energy gap was determined to be around 27-32 meV. The results give values for the ratio 2Δ (T = 4.6 K)/kBTc (80 K) of between 7.8 and 9.3. The data also reveal a reproducible structure at energies of 67 and 120 meV. © 1990.
引用
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页码：15 / 18
页数：4
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