TY - JOUR
T1 - Superconductivity of Rock-Salt Structure LaO Epitaxial Thin Film
AU - Kaminaga, Kenichi
AU - Oka, Daichi
AU - Hasegawa, Tetsuya
AU - Fukumura, Tomoteru
N1 - Funding Information:
XPS measurements were conducted at the Research Hub for Advanced Nano Characterization, The University of Tokyo, under the support of the Nanotechnology Platform by MEXT, Japan (12024046). This work was supported by JST-CREST, JSPS-KAKENHI (26105002, JP17J05331, and 18H03872), the Mitsubishi Foundation, and the Center for Spintronics Research Network (CSRN), Tohoku University.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/6/6
Y1 - 2018/6/6
N2 - We report a superconducting transition in a LaO epitaxial thin film with the superconducting transition onset temperature (Tc) at around 5 K. This Tc is higher than those of other lanthanum monochalcogenides and opposite to their chemical trend: Tc = 0.84, 1.02, and 1.48 K for LaX (X = S, Se, Te), respectively. The carrier control resulted in a dome-shaped Tc as a function of electron carrier density. In addition, the Tc was significantly sensitive to epitaxial strain in spite of the highly symmetric crystal structure. This rock-salt superconducting LaO could be a building block to design novel superlattice superconductors.
AB - We report a superconducting transition in a LaO epitaxial thin film with the superconducting transition onset temperature (Tc) at around 5 K. This Tc is higher than those of other lanthanum monochalcogenides and opposite to their chemical trend: Tc = 0.84, 1.02, and 1.48 K for LaX (X = S, Se, Te), respectively. The carrier control resulted in a dome-shaped Tc as a function of electron carrier density. In addition, the Tc was significantly sensitive to epitaxial strain in spite of the highly symmetric crystal structure. This rock-salt superconducting LaO could be a building block to design novel superlattice superconductors.
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U2 - 10.1021/jacs.8b03009
DO - 10.1021/jacs.8b03009
M3 - Article
C2 - 29781615
AN - SCOPUS:85047731492
VL - 140
SP - 6754
EP - 6757
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 22
ER -