Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films

We prepared one-unit-ceil （1-UC） thick FeSe films on insulating SrTiOa substrates with non-superconducting FeTe protection layers by molecular beam epitaxy for ex situ studies. By direct transport and magnetic measurements, we provide definitive evidence for high temperature superconductivity in the...

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Veröffentlicht in:	Chinese physics letters 2014, Vol.31 (1), p.156-160
1. Verfasser:	张文号孙袆张金松李坊森郭明华赵弇斐张慧敏彭俊平邢颖王慧超 FUJITA Takeshi HIRATA Akihiko 李志丁浩汤辰佳王萌王庆艳何珂季帅华陈曦王俊峰夏正才李亮王亚愚王健王立莉陈明伟薛其坤马旭村
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Schlagworte:	Bulk density Bulk transporters Critical current density Magnetic measurement Molecular beam epitaxy Superconductivity Thick films TiOa Transport 临界电流密度分子束外延单位外商投资企业电影细胞高温超导
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container_title	Chinese physics letters
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creator	张文号孙袆张金松李坊森郭明华赵弇斐张慧敏彭俊平邢颖王慧超 FUJITA Takeshi HIRATA Akihiko 李志丁浩汤辰佳王萌王庆艳何珂季帅华陈曦王俊峰夏正才李亮王亚愚王健王立莉陈明伟薛其坤马旭村
description	We prepared one-unit-ceil （1-UC） thick FeSe films on insulating SrTiOa substrates with non-superconducting FeTe protection layers by molecular beam epitaxy for ex situ studies. By direct transport and magnetic measurements, we provide definitive evidence for high temperature superconductivity in the 1-UC FeSe films with an onset Tc above 40 K and an extremely large critical current density fie Jc-1.7× 106 A/cm2 at 2K, which are much higher than Tc-8K and Jc-104 A/cm^2 for bulk FeSe, respectively. Our work may pave the way to enhancing and tailoring superconductivity by interface engineering.
doi_str_mv	10.1088/0256-307x/31/1/017401
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source	IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects	Bulk density Bulk transporters Critical current density Magnetic measurement Molecular beam epitaxy Superconductivity Thick films TiOa Transport 临界电流密度分子束外延单位外商投资企业电影细胞高温超导
title	Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films
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