Orbital mixing at the onset of high-temperature superconductivity in FeSe_{1−x}Te_{x}/CaF_{2}

• Published in: Physical review research Vol. 3; no. 1; p. L012007
• Main Authors: K. Nakayama, R. Tsubono, G. N. Phan, F. Nabeshima, N. Shikama, T. Ishikawa, Y. Sakishita, S. Ideta, K. Tanaka, A. Maeda, T. Takahashi, T. Sato
• Format: Journal Article
• Language: English
• Published: American Physical Society 01.01.2021

We perform systematic high-resolution angle-resolved photoemission spectroscopy of iron-chalcogenide superconductor FeSe_{1−x}Te_{x} films on CaF_{2} which exhibit a unique paramagnetic nematicity at x=0 (pristine FeSe) and a gigantic T_{c} enhancement at the critical Te concentration (x_{c}) of x∼0...