Evidence for multi-gap symmetry from grain boundary effects in polycrystalline Ba0.6K0.4Fe2As2 microbridge

Huang Ya; Zhou Xian-Jing; Gao Zhao-Shun; Wu Hao; He Ge; Yuan Jie; Jin Kui; Pereira Paulo J.; Ji Min; An De-Yue; Li Jun; Hatano Takeshi; Jin Biao-Bing; Wang Hua-Bing; Wu Pei-Heng

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Evidence for multi-gap symmetry from grain boundary effects in polycrystalline Ba0.6K0.4Fe2As2 microbridge

机译：多晶界面对称在多晶体Ba0.6k0.4Fe2as2 Microbridge中的多间隙对称的证据

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We studied the grain boundaries within mechanically formed polycrystalline Ba0.6K0.4Fe2As2 micro-bridges. By tunneling current across grain boundaries, current-voltage characteristics (IVCs) demonstrated the typical Josephson weak links behavior in micro-bridges. Shapiro steps were observed for the junctions under the microwave radiation at 10 GHz. The temperature dependence of the critical current I-c was observed as a shoulder, corresponding to a multi-gap symmetry but not a single-gap s-wave or d-wave.

机译：我们在机械形成的多晶Ba0.6k0.4fe2as2微桥内研究了晶界。通过跨晶界隧穿电流，电流 - 电压特性（IVC）展示了微桥中的典型约瑟夫森弱链路行为。在10GHz下的微波辐射下的连接点观察到Shapiro步骤。临界电流I-C的温度依赖性被观察为肩部，对应于多个间隙对称性而不是单个间隙S波或D波。

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来源
《Superconductor Science & Technology》 |2017年第1期|共5页
作者
Huang Ya; Zhou Xian-Jing; Gao Zhao-Shun; Wu Hao; He Ge; Yuan Jie; Jin Kui; Pereira Paulo J.; Ji Min; An De-Yue; Li Jun; Hatano Takeshi; Jin Biao-Bing; Wang Hua-Bing; Wu Pei-Heng;
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作者单位

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Natl Inst Mat Sci Tsukuba Ibaraki 3050047 Japan;

Natl Inst Mat Sci Tsukuba Ibaraki 3050047 Japan;

Chinese Acad Sci Inst Phys Condensed Matter Phys Beijing 100190 Peoples R China;

Chinese Acad Sci Inst Phys Condensed Matter Phys Beijing 100190 Peoples R China;

Chinese Acad Sci Inst Phys Condensed Matter Phys Beijing 100190 Peoples R China;

Katholieke Univ Leuven INPAC Inst Nanoscale Phys &

Chem Celestijnenlaan 200 D B-3001 Leuven Belgium;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Natl Inst Mat Sci Tsukuba Ibaraki 3050047 Japan;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

Nanjing Univ Res Inst Superconductor Elect Nanjing 210093 Jiangsu Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类超导电性;导电材料及其制品;
关键词
grain boundary effect; Josephson junction; multi-gap symmetry; iron-based superconductors;

机译：晶界效应;约瑟夫森交界处;多间隙对称;铁基超导体;

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专利

1. Evidence for multi-gap symmetry from grain boundary effects in polycrystalline Ba0.6K0.4Fe2As2 microbridge [J] . Huang Ya, Zhou Xian-Jing, Gao Zhao-Shun, Superconductor Science & Technology . 2017,第1期

机译：多晶界面对称在多晶体Ba0.6k0.4Fe2as2 Microbridge中的多间隙对称的证据
2. Symmetry dependent optoelectronic properties of grain boundaries in polycrystalline Cu(In,Ga)Se_2 thin films [J] . Mathias Mueller, Daniel Abou-Ras, Thorsten Rissom, Journal of Applied Physics . 2014,第2期

机译：多晶Cu（In，Ga）Se_2薄膜中晶界对称性的光电性质
3. Symmetry-dependence of electronic grain boundary properties in polycrystalline CulnSe2 thin films [J] . Robert Baier, Daniel Abou-Ras, Thorsten Rissom, Applied Physics Letters . 2011,第17期

机译：多晶CuInSe2薄膜中电子晶界特性的对称性依赖性
4. Size and grain-boundary effects on the performance of polycrystalline CIGS-based solar cells [C] . Idris Bouchama, Rafik Zouache, Kamal Djessas, International Renewable Energy Congress . 2015

机译：尺寸和晶界对基于CIGS的多晶太阳能电池性能的影响
5. Carrier Transport, Recombination, and the Effects of Grain Boundaries in Polycrystalline Cadmium Telluride Thin Films for Photovoltaics [D] . Tuteja, Mohit. 2016

机译：载体转运，重组和晶界在多晶镉碲化镉薄膜中的光伏
6. Microstructure and Flux Pinning of Reacted-and-Pressed Polycrystalline Ba0.6K0.4Fe2As2 Powders [O] . Michael R. Koblischka, Anjela Koblischka-Veneva, Jörg Schmauch, 2019

机译：反应和压制多晶Ba0.6K0.4Fe2As2粉末的微观结构和助焊剂固定
7. No Evidence for Passivation Effects of Na and K at Grain Boundaries in Polycrystalline Cu(In,Ga)Se 2 Thin Films for Solar Cells [O] . Daniel Abou-Ras, Aleksandra Nikolaeva, Sebastián Caicedo Dávila, 2019

机译：没有证据对太阳能电池的多晶Cu（In，Ga）Se 2薄膜的晶界Na和k的钝化作用

Evidence for multi-gap symmetry from grain boundary effects in polycrystalline Ba0.6K0.4Fe2As2 microbridge

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