TY - JOUR
T1 - Interfacial Superconductivity Achieved in Parent AEFe2As2(AE = Ca, Sr, Ba) by a Simple and Realistic Annealing Route
AU - Huyan, Shuyuan
AU - Lyu, Yanfeng
AU - Wang, Hua
AU - Deng, Liangzi
AU - Wu, Zheng
AU - Lv, Bing
AU - Zhao, Kui
AU - Tian, Fei
AU - Gao, Guanhui
AU - Liu, Rui Zhe
AU - Ma, Xiaojing
AU - Tang, Zhongjia
AU - Gooch, Melissa
AU - Chen, Shuo
AU - Ren, Zhifeng
AU - Qian, Xiaofeng
AU - Chu, Ching Wu
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/3/10
Y1 - 2021/3/10
N2 - Materials with interfaces often exhibit extraordinary phenomena exemplified by rich physics, such as high-temperature superconductivity and enhanced electronic correlations. However, demonstrations of confined interfaces to date have involved intensive effort and fortuity, and no simple path is consistently available. Here, we report the achievement of interfacial superconductivity in the nonsuperconducting parent compounds AEFe2As2, where AE = Ca, Sr, or Ba, by simple subsequent annealing of the as-grown samples in an atmosphere of As, P, or Sb. Our results indicate that the superconductivity originates from electron transfer at the interface of the hybrid van der Waals heterostructures, consistent with the two-dimensional superconducting transition observed. The observations suggest a common origin of interfaces for the nonbulk superconductivity previously reported in the AEFe2As2 compound family and provide insight for the further exploration of interfacial superconductivity.
AB - Materials with interfaces often exhibit extraordinary phenomena exemplified by rich physics, such as high-temperature superconductivity and enhanced electronic correlations. However, demonstrations of confined interfaces to date have involved intensive effort and fortuity, and no simple path is consistently available. Here, we report the achievement of interfacial superconductivity in the nonsuperconducting parent compounds AEFe2As2, where AE = Ca, Sr, or Ba, by simple subsequent annealing of the as-grown samples in an atmosphere of As, P, or Sb. Our results indicate that the superconductivity originates from electron transfer at the interface of the hybrid van der Waals heterostructures, consistent with the two-dimensional superconducting transition observed. The observations suggest a common origin of interfaces for the nonbulk superconductivity previously reported in the AEFe2As2 compound family and provide insight for the further exploration of interfacial superconductivity.
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U2 - 10.1021/acs.nanolett.0c04995
DO - 10.1021/acs.nanolett.0c04995
M3 - Article
C2 - 33646790
AN - SCOPUS:85102964864
SN - 1530-6984
VL - 21
SP - 2191
EP - 2198
JO - Nano letters
JF - Nano letters
IS - 5
ER -