Abstract
We present a device architecture of hybrid-edge and dual-gated quantum point contact. We demonstrate improved electrostatic control over the separation, position, and coupling of each broken-symmetry compressible strip in graphene. Via low-temperature magnetotransport measurement, we demonstrate selective manipulation over the evolution, hybridization, and transmission of arbitrarily chosen quantum Hall states in the channel. With gate-tunable tunneling spectroscopy, we characterize the energy gap of each symmetry-broken quantum Hall state with high resolution on the order of ∼0.1 meV.
Original language | English (US) |
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Article number | 245423 |
Journal | Physical Review B |
Volume | 108 |
Issue number | 24 |
DOIs | |
State | Published - Dec 15 2023 |
Externally published | Yes |
Bibliographical note
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