Revisiting optical properties of MgB${}_2$ with a high-quality sample prepared by a HPCVD method

Yu-Seong Seo, Jae Hak Lee, Won Nam Kang +1

We investigated a high-quality MgB${}_2$ thin film with a thickness of $\sim$1000 nm on an Al${}_2$O${}_3$ substrate using optical spectroscopy. We measured the reflectance spectra…