DGIST Scholar: 서정필

서정필

Seo, Jungpil

Researcher ID ORCiD Scopus Google Scholar ">Research Gate

Nanospm Lab(Advanced Materials Research Group): A scanning tunneling microscope (STM) is based on the concept of quantum tunneling. When a conducting tip is approached to the sample within a nanometer size, tunneling current starts to flow quantum mechanically. The tunneling current depends on the tip position, applied voltages, and the local density of states (LDOS). Information of the tip position constitutes the topographic image with a feedback process. The local variations of LDOS shows the quantum fluctuation of the energy states.We are aiming to explore fundamental electrical properties in quantum nanostructures. One of our focuses is ballistic one-dimensional systems (such as InAs nanowires (NWs), topological insulator (TI) NWs and carbon nanotube), which is at the heart of the ground breaking experiments such as Majorana bound states and spin qubits. We are successfully growing InAs and other semiconducting NWs using metal-organic chemical vapor deposition (MOCVD).