Presentation Information
[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.
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