Electric field control of superconductivity at the LaAlO<sub>3</sub>/KTaO<sub>3</sub>(111) interface

doi:10.1126/science.abb3848

GSTDTAP > 气候变化

DOI	10.1126/science.abb3848
	Electric field control of superconductivity at the LaAlO₃/KTaO₃(111) interface
	Zheng Chen; Yuan Liu; Hui Zhang; Zhongran Liu; He Tian; Yanqiu Sun; Meng Zhang; Yi Zhou; Jirong Sun; Yanwu Xie
	2021-05-14
发表期刊	Science
出版年	2021
英文摘要	The interface between the oxides LaAlO3 and KTaO3(111) has been shown to superconduct at temperatures up to 2 Kelvin. Chen et al. show that this superconductivity can be controlled with electric fields. As they tuned the gating voltage, the researchers observed a dome-shaped variation of the superconducting critical temperature. This variation could not be ascribed to the change in carrier density, but rather seemed to reflect the change in the mobility of the carriers. Science , this issue p. [721][1] The oxide interface between LaAlO3 and KTaO3(111) can harbor a superconducting state. We report that by applying a gate voltage ( V G) across KTaO3, the interface can be continuously tuned from superconducting into insulating states, yielding a dome-shaped T c- V G dependence, where T c is the transition temperature. The electric gating has only a minor effect on carrier density but a strong one on mobility. We interpret the tuning of mobility in terms of change in the spatial profile of the carriers in the interface and hence, effective disorder. As the temperature is decreased, the resistance saturates at the lowest temperature on both superconducting and insulating sides, suggesting the emergence of a quantum metallic state associated with a failed superconductor and/or fragile insulator. [1]: /lookup/doi/10.1126/science.abb3848
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/326818
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Zheng Chen,Yuan Liu,Hui Zhang,et al. Electric field control of superconductivity at the LaAlO₃/KTaO₃(111) interface[J]. Science,2021.
APA	Zheng Chen.,Yuan Liu.,Hui Zhang.,Zhongran Liu.,He Tian.,...&Yanwu Xie.(2021).Electric field control of superconductivity at the LaAlO₃/KTaO₃(111) interface.Science.
MLA	Zheng Chen,et al."Electric field control of superconductivity at the LaAlO₃/KTaO₃(111) interface".Science (2021).