Signature of Spin-Resolved Quantum Point Contact in p-Type Trilayer WSe2 van der Waals Heterostructure
Abstract
In this study, the electrostatically induced quantum confinement structure, quantum point contact, has been realized in p-type trilayer tungsten diselenide-based van der Waals heterostructure with modified van der Waals contact method with degenerately doped transition metal dichalcogenide crystals. Clear quantized conductance and pinch-off state through the one-dimensional confinement were observed by dual-gating of split gate electrodes and top gate. Conductance plateaus were observed at step of 0.5 $\times$ 2e$^{2}$/h at zero and high magnetic field in addition to quarter plateaus at a finite bias voltage condition indicating the signature of spin-polarized quantum point contact realization.
- Publication:
-
Nano Letters
- Pub Date:
- September 2021
- DOI:
- 10.1021/acs.nanolett.1c01828
- arXiv:
- arXiv:2105.14469
- Bibcode:
- 2021NanoL..21.7534S
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- Paper:25 pages and 4 figures, SI: 13 pages and 10 figures, accepted for publication in Nano Letters