1. Soft X-ray absorption spectroscopy
2. Soft X-ray photon-emission spectroscopy
3. Strongly correlated transition metal compound
4. Multiferroic, Magnets, Many body Quantum computing.

Modern civilization builds on the material science industry. The physical properties of the material rely on the interplay between spin, charge, and orbital. Then understanding the correlated effects among them can progress the exploitation of the novel quantum material. My research theme is to study the correlated effect among the spin, orbital, and charge through synchrotron spectroscopy combing with quantum many-body calculations. We will look insight into the deep mechanism governing the complex interactions between each quantum degree of freedom to solve the complex quantum problem. Furthermore, we will utilize the knowledge learned from the correlated effect to exploit the novel quantum material.

1. S. C.Haw, C.-Y.Kuo*, Z.Hu, J. W.Lin, J. M.Lee, K. T.Lu, C. H.Lee, H. J.Lin, J. F.Lee, C. W.Pao, A.Tanaka, L. H.Tjeng, C.TeChen, J. M.Chen, Single antiferromagnetic axis of Fe in orthorhombic YMn0.5Fe0.5O3 films observed by x-ray magnetic linear dichroism. J. Alloys Compd. 780, 79–84 (2019).
2. Z.Chen, Z.Chen, C.-Y.Kuo, Y.Tang, L. R.Dedon, Q.Li, L.Zhang, C.Klewe, Y.-L.Huang, B.Prasad, A.Farhan, M.Yang, J. D.Clarkson, S.Das, S.Manipatruni, A.Tanaka, P.Shafer, E.Arenholz, A.Scholl, Y.-H.Chu, Z. Q.Qiu, Z.Hu, L.-H.Tjeng, R.Ramesh, L.-W.Wang, L. W.Martin, Complex strain evolution of polar and magnetic order in multiferroic BiFeO3 thin films. Nature Commun. 9, 3764 (2018).
3. C.-Y.Kuo, T.Haupricht, J.Weinen, H.Wu, K.-D.Tsuei, M. W.Haverkort, A.Tanaka, L. H.Tjeng, Challenges from experiment: electronic structure of NiO. Eur. Phys. J. Spec. Top. 226, 2445–2456 (2017).
4. C.-Y.Kuo, Z.Hu, J. C.Yang, S.-C.Liao, Y. L.Huang, R. K.Vasudevan, M. B.Okatan, S.Jesse, S.V.Kalinin, L.Li, H. J.Liu, C.-H.Lai, T. W.Pi, S.Agrestini, K.Chen, P.Ohresser, A.Tanaka, L. H.Tjeng, Y. H.Chu, Single-domain multiferroic BiFeO3 films. Nature Commun. 7, 12712 (2016).
5. C.-Y.Kuo, Y.Drees, M. T.Fernández-Díaz, L.Zhao, L.Vasylechko, D.Sheptyakov, a. M. T.Bell, T. W.Pi, H.-J.Lin, M.-K.Wu, E.Pellegrin, S. M.Valvidares, Z. W.Li, P.Adler, A.Todorova, R.Küchler, A.Steppke, L. H.Tjeng, Z.Hu, a. C.Komarek, k=0 Magnetic Structure and Absence of Ferroelectricity in SmFeO3. Phys. Rev. Lett. 113, 217203 (2014).