ANOMALOUS TRANSPORT AND STRUCTURAL-PROPERTIES OF SR1-XCUO2-DELTA THIN-FILMS

被引：23

作者：

NORTON, DP

CHAKOUMAKOS, BC

JONES, EC

CHRISTEN, DK

LOWNDES, DH

机构：

[1] Solid State Division, Oak Ridge National Laboratory, Oak Ridge

来源：

PHYSICA C | 1993年 / 217卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90804-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Transport and structural properties of Sr1-xCuO2-delta thin films grown by pulsed laser deposition support the contention that the tetragonal phase is capable of accommodating a significant density of alkaline-earth deficiencies up to x less-than-or-equal-to 0.3. Resistivity measurements indicate a significant change in the carrier density of the CuO2 planes as Sr vacancies are introduced. In addition, an enigmatic anomaly in the resistivity at 185 K is observed for Sr0.85CuO2-delta thin films. Magnetic measurements on these samples indicate that, although a significant drop in resistivity at 185 K is observed, it is not due to a superconducting transition. Hall measurements, as well as changes in the resistivity with film growth conditions, suggest that the majority carriers in these Sr1-xCuO2-delta thin films are electrons even with the Sr-vacancies present.

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收藏

页码：146 / 150

页数：5

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