Presentation Information
[Tu-P-80]Probing Degenerated Energy States Induced by Geometrical Symmetry in a Rectangular Quantum Dot
〇Jihong Ju1, Seokyeong Lee2, Mubin Park3, Yunchul Chung1, Hyoungsoon Choi2, Hyungkook Choi4 (1. Pusan Nat'l Univ. (Korea), 2. KAIST (Korea), 3. Kyung Hee Univ. (Korea), 4. Jeonbuk Nat'l Univ. (Korea))
We investigate geometrical degeneracies in a gate-defined quantum dot fabricated on a GaAs/AlGaAs heterostructure. Using an analytically derived electrostatic model, we design a geometry with a tunable aspect ratio. The device is integrated with a QPC charge sensor to study the evolution of degenerate states.