TY - JOUR
T1 - Superconductivity of Rock-Salt Structure LaO Epitaxial Thin Film
AU - Kaminaga, Kenichi
AU - Oka, Daichi
AU - Hasegawa, Tetsuya
AU - Fukumura, Tomoteru
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 -