WORK FUNCTION OF A HIGH-TC SUPERCONDUCTOR, YBA2CU3O7

被引：8
|
作者：
KOSHIDA, N
SAITO, K
机构：
[1] Division of Electronic and Information Engineering, Tokyo University of Agriculture and Technology, Tokyo, 184, Koganei
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1990年 / 29卷 / 09期
关键词：
Contact potential difference; Electronic properties; High-T[!sub]c[!/sub] superconductor; Photoelectric effect; Superconductivity; Surfaces; Work function; YBa[!sub]2[!/sub]Cu[!sub]3[!/sub]O[!sub]7[!/sub;
D O I：
10.1143/JJAP.29.L1635
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To characterize the electronic properties of superconducting YBa2Cu3O7, its work function \varPhi has been measured by two different methods. From the photoelectric and electrical determinations, it is shown that \varPhi of polycrystalline YBa2Cu3O7 is close to 4.0 eV. The relatively high work function of YBa2Cu3O7 for its low electron density implies that a strong exchange-correlation potential exists in the bulk. Systematic studies are necessary in order to determine whether or not the work function is a useful parameter for the new high-Tc superconductors as well as for the conventional ones. © 1990 The Japan Society of Applied Physics.
引用
收藏
页码：L1635 / L1637
页数：3
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