Hwang, Jinwoong Kim, Kyoo Ryu, Hyejin Kim, Jigul Lee, Ji-Eun Kim, Sooran Kang, Minhee Park, Byeong-Gyu Lanzara, Alessandra Chung, Jinwook Mo, Sung-Kwan Denlinger, Jonathan Il Min, Byung Hwang, Choongyu 2024-01-19T22:32:57Z 2024-01-19T22:32:57Z 2021-09-03 2018-06 1530-6984 https://pubs.kist.re.kr/handle/201004/121294 The interaction between a magnetic impurity, such as cerium (Ce) atom, and surrounding electrons has been one of the core problems in understanding many-body interaction in solid and its relation to magnetism. Kondo effect, the formation of a new resonant ground state with quenched magnetic moment, provides a general framework to describe many-body interaction in the presence of magnetic impurity. In this Letter, a combined study of angle-resolved photoemission (ARPES) and dynamic mean-field theory (DMFT) on Ce-intercalated graphene shows that Ce-induced localized states near Fermi energy, E-F, hybridized with the graphene g-band, exhibit gradual increase in spectral weight upon decreasing temperature. The observed temperature dependence follows the expectations from the Kondo picture in the weak coupling limit. Our results provide a novel insight how Kondo physics emerges in the sea of two-dimensional Dirac electrons. English AMER CHEMICAL SOC ELECTRONIC-STRUCTURE EPITAXIAL GRAPHENE PHOTOEMISSION TRANSITION MINIMUM BAND Emergence of Kondo Resonance in Graphene Intercalated with Cerium Article 10.1021/acs.nanolett.8b00784 1 NANO LETTERS, v.18, no.6, pp.3661 - 3666 NANO LETTERS 18 6 3661 3666 scie scopus 000435524300049 2-s2.0-85047398561 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article ELECTRONIC-STRUCTURE EPITAXIAL GRAPHENE PHOTOEMISSION TRANSITION MINIMUM BAND Kondo effect graphene cerium angle-resolved photoemission