Coulomb Interaction Engineering at YBa2Cu3O7-δ-SrTiO3 Interface

被引：0

作者：

La Mattina, F. ^{[1
]}

Erni, R. ^{[1
]}

Rossell, M. D. ^{[1
]}

Bona, G-L ^{[1
]}

Shengelaya, A. ^{[2
,3
]}

机构：

[1] Empa, Swiss Fed Labs Mat Sci & Technol, Uberlandstr 129, CH-8600 Dubendorf, Switzerland

[2] Tbilisi State Univ, Dept Phys, Chavchavadze 3, GE-0128 Tbilisi, Georgia

[3] Ivane Javakhishvili Tbilisi State Univ, Andronikashvili Inst Phys, GE-0177 Tbilisi, Georgia

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2022年 / 35卷 / 07期

关键词：

HTC; Cuprates; Dielectric; Epitaxial thin film; Transition metal oxides; Interface; Coulomb engineering; T-C; SUPERCONDUCTIVITY; STATE;

D O I：

10.1007/s10948-022-06286-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It has been proposed by Muller and Shengelaya that underdoped ultrathin layers of copper-oxide high-temperature superconductors (HTSs) sandwiched between high-dielectric-constant insulator layers could manifest increased superconducting critical temperature T-c. To check this hypothesis, we investigated structural and transport properties of YBa2Cu3O7-delta (YBCO) thin films sandwiched between SrTiO3 (STO) layers. Scanning transmission electron microscopy (STEM) showed that a high-quality interface is formed between YBCO and the top STO layers. An increase of T-c up to Delta T approximate to 20 K was observed at these interfaces in case of underdoped YBCO films.

引用

页码：1801 / 1805

页数：5

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