Single superconducting energy scale in the electron-doped cuprate superconductor Pr2-xCexCuO4-δ

被引：8

作者：

Diamant, I. ^{[1
]}

Greene, R. L. ^{[2
]}

Dagan, Y. ^{[1
]}

机构：

[1] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[2] Univ Maryland, Ctr Nanophys & Adv Mat, Dept Phys, College Pk, MD 20743 USA

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 01期

基金：

以色列科学基金会;

关键词：

carrier density; cerium compounds; doping; doping profiles; high-temperature superconductors; praseodymium compounds; superconducting energy gap; tunnelling; HIGH-TEMPERATURE SUPERCONDUCTORS; T-C SUPERCONDUCTORS; TUNNELING SPECTROSCOPY; PSEUDOGAP; TRANSITION; SYMMETRY; STATE; GAP;

D O I：

10.1103/PhysRevB.80.012508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The tunneling spectra of the electron-doped cuprate Pr2-xCexCuO4-delta as a function of doping and temperature are reported. We find that the superconducting gap, Delta, shows a BCS-type temperature dependence even for extremely low carrier concentrations. Moreover, Delta follows the doping dependence of T-c, in strong contrast with tunneling studies of the hole-doped cuprates. From our results we conclude that there is a single superconducting energy scale in the electron-doped cuprates.

引用

页数：4

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