Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session D49: Superconductivity in Ruthenates
2:30 PM–5:06 PM,
Monday, March 2, 2020
Room: Mile High Ballroom 1B
Sponsoring Unit: DCMP
Chair: Shirin Mozaffari
Abstract: D49.00002 : Development of new phase in ruthenium oxides using molecular beam epitaxy method*
We prepare the samples using a molecular beam epitaxy system. The substrates are LaAlO3, SrTiO3, CaF2, and YSZ. The growth temperature is 500-800 °C. We used O2, O*, O3 as the oxide source. We measured the X-ray diffraction, energy dispersive X-ray spectroscopy, temperature dependence of electrical resistivity.
We have succeeded in fabrication of Ca2RuO4 films. The temperature dependence of electrical resistivity depends on ρ ~ exp(1/T1/2) which is consistent with the report by bulk samples. At the day, We will report the challenge to fabricate the Ca2RuO4 films which show metallic or superconductivity. We also fabricated CaRuO3 and CaRu(O,F)3 films. It is confirmed that the magnetic transition temperature is suppressed in the higher F-doped range.
*This work was supported by Takahashi Industrial and Economic Research Foundation, The Japan prize foundation, The Murata science foundation, and Yashima Environment Technology Foundation.
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