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We study superconductivity by exploring the superconducting gap structures using a normal metal and a half metal. Also, we study the interplay between superconductivity and magnetism in nanodevices.

Superconducting gap structures


Selected publications:

Determination of Superconducting Gap of SmFeAsFxO1-x Superconductors by Andreev Reflection Spectroscopy
T. Y. Chen, S. X. Huang, Z. Tesanovic, R. H. Liu, X. H. Chen, and C. L. Chien,
Physica C 469, 521 (2009) (INVITED REVRIEW).
A BCS-like gap in superconductor SmFeAsO0.85F0.15
T. Y. Chen, Z. Tesanovic, R. H. Liu, X. H. Chen, and C. L. Chien,
Nature 453, 1224 (2008).

Triplet superconductivity


Selected publications:

Possible p-Wave Superconductivity in Epitaxial Bi/Ni Bilayers
GONG Xin-Xin, ZHOU He-Xin, XU Peng-Chao, YUE Di, ZHU Kai, JIN Xiao-Feng, TIAN He, ZHAO Ge-Jian, CHEN Ting-Yong,
Chin. Phys. Lett. 32, 067402 (2105).

Superconductivity and magnetism

Normally superconductivity is not compatible with magnetism, but in some effects, they can be intimately related.

- Proximity effect

- Rotation of wavefunction

- Domain wall and superconductivity


Selected publications:

Altering the superconductor transition temperature by domain-wall arrangements in hybrid ferromagnet-superconductor structures
L.Y. Zhu, T. Y. Chen, and C. L. Chien,
Phys. Rev. Lett., 101, 017004 (2008).