[15a-K207-1~11] 17.2 Graphene

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[15a-K207-2] Formation of Strained Graphene Quantum Dots and Evaluation of Their Electronic States

Kaho Tanaka¹, Shota Uchida², Koichi Sugiyama², Tomonori Ikari², Anton Visikovkiy¹, 〇Satoru Tanaka¹ (1.Kyushu Univ., 2.Ube Nat. Inst. Tech.)

Keywords:

graphene,quantum dot,pseudo-magnetic field

After the initial stage of hydrogen intercalation in the graphene buffer layer on SiC(0001), graphene quantum dots are formed. Due to changes in the interface structure, lattice distortion (strain) is introduced in the graphene, which causes the electrons to be influenced by a pseudo-magnetic field, leading to changes in the electronic states (such as energy gaps and Landau levels). The relationship between the electronic states and the strain (dot size) is investigated. The results are presented based on Raman spectroscopy and STM/STS measurements.