Direct observation of kink evolution due to Hund’s coupling on approach to metal-insulator transition in NiS2−x Se x
oleh: Bo Gyu Jang, Garam Han, Ina Park, Dongwook Kim, Yoon Young Koh, Yeongkwan Kim, Wonshik Kyung, Hyeong-Do Kim, Cheng-Maw Cheng, Ku-Ding Tsuei, Kyung Dong Lee, Namjung Hur, Ji Hoon Shim, Changyoung Kim, Gabriel Kotliar
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2021-02-01 |
Deskripsi
A decisive spectroscopic evidence of the Hund’s coupling energy scale in multi-orbital correlated systems has been lacking. Here, the authors identify a kink feature due to Hund´s coupling in the spectral function of NiS2x Se x as they track its evolution across the Mott-insulator transition.