Hybrid Nb/Al/Ba0.5K0.5Fe2As2 sandwich Josephson junctions
Hybrid Nb/Al/Ba0.5K0.5Fe2As2 sandwich Josephson junctions
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混合 Nb/Al/Ba0.5K0.5Fe2As2 夹层约瑟夫森结
DOI:
10.1088/1361-6668/ab601f
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发表时间:
2020-01
影响因子:
3.6
通讯作者:
Wu Peiheng
中科院分区:
文献类型:
--
作者:
Tian Wanghao;Lv Yangyang;Xu Zuyu;Zhang Huili;Chen Shixian;Dong Sining;Li Jun;Wang Yong-Lei;Koelle Dieter;Kleiner Reinhold;Wang Huabing;Wu Peiheng
We fabricated hybrid Josephson junctions between a Ba0.5K0.5Fe2As2 (BKFA) single crystal and the conventional superconductor Nb with normal metal Al as the barrier. An in situ process was used to create clean BKFA/Al/Nb interfaces. Current transport is along the c-axis of BKFA. The current–voltage characteristics are slightly hysteretic at low temperatures. Except for some features indicative of resonant modes the shape of the current–voltage characteristics can be well described by the resistively and capacitvely shunted junction (RCSJ) model, with a product of the Josephson critical current and the normal state resistance of the junction exceeding 180 μV at low temperatures. The temperature dependence of the Josephson current is linear for temperatures down to 2 K. Under 40 GHz microwave irradiation integer Shapiro steps are observed. The power dependence of the Shapiro step-height is in good agreement with RCSJ simulations. Possible relations of our data with the symmetry of the superconducting order parameter of BKFA are discussed.
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影响因子:
16.6
作者:
Li J;Pereira PJ;Yuan J;Lv YY;Jiang MP;Lu D;Lin ZQ;Liu YJ;Wang JF;Li L;Ke X;Van Tendeloo G;Li MY;Feng HL;Hatano T;Wang HB;Wu PH;Yamaura K;Takayama-Muromachi E;Vanacken J;Chibotaru LF;Moshchalkov VV
通讯作者:
Moshchalkov VV
DOI:
10.1016/j.phpro.2012.06.128
发表时间:
2012
期刊:
Physics Procedia
影响因子:
--
作者:
T. Scheller;F. Mueller;R. Wendisch;O. Kieler;U. Springborn;K. Stoerr;B. Egeling;T. Weimann;L. Palafox;R. Behr;J. Kohlmann
通讯作者:
T. Scheller;F. Mueller;R. Wendisch;O. Kieler;U. Springborn;K. Stoerr;B. Egeling;T. Weimann;L. Palafox;R. Behr;J. Kohlmann
DOI:
--
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Y. Yerina
通讯作者:
Y. Yerina
影响因子:
8.6
作者:
Kalenyuk, A. A.;Pagliero, A.;Krasnov, V. M.
通讯作者:
Krasnov, V. M.
影响因子:
8.6
作者:
Grafe, H. -J.;Paar, D.;Buechner, B.
通讯作者:
Buechner, B.