Undergraduate Physics Seminar: "Developing gating devices for scanning tunneling microscope", Jessie Wei
- Event Type
- Seminar/Symposium
- Sponsor
- Department of Physics
- Location
- Loomis 464
- Virtual
- Join online
- Date
- Apr 11, 2024 5:00 pm 6:00 PM
- Speaker
- Jessie Wei
- Contact
- Tushar Mohan
- tusharm4@illinois.edu
- Phone
- 848-702-1630
- Views
- 91
- Originating Calendar
- Physics - Undergraduate Student Events
Using a gating device compatible with the scanning tunneling microscope (STM), we adjust the doping level in our molecular-beam epitaxy (MBE) films through a back gate, and observe the change in local density of states with STM. To develop the gating device, we measure the dielectric breakdown of hBN-SiO2 and Al2O3-SiO2, and transfer high-quality graphene on the devices. The films are then grown on the devices with MBE and studied with STM. We show how the STM compatible gate-tunable devices are developed, how the materials is grown on the devices, and STM spectrums on gated materials.