Novel physics in one-dimensional nanostructures

Overview

Low-dimensional systems are materials where particle motion is constrained in one or more directions - for example,  bismuth nanolines on Si(001), which are two atoms wide but can extend microns in length.  Due to quantum confinement effects and reduced dimensionality, these types of systems can exhibit novel behaviour not observed in bulk systems. In the case of bismuth nanolines, recent theoretical work has predicted that they should host a one-dimensional topological phase as well as tuneable soliton states. The combination of contollable quantum phases and on a common semiconductor surface makes this an appealing system for study.

Research engagement

This project will focus on growing  bisumuth lines on Si(001), and studying their properties at low temperature using scanning probe microscopy (SPM).

Research activities

This project will provide an opportunity to grow and study quantum materials using low-temperature scanning tunneling microscopy (STM) and atomic force microscopy (AFM).

Outcomes

This project will generate experimental data that will help elucidate quantum phenomena in a one-dimensional system.

Skills and experience

Experience and/or interest in quantum and experimental physics.

Start date

1 November, 2024

End date

15 February, 2025

Location

M-block, Gardens Point Campus.

Keywords

• quantum
• microscopy
• physics
• low temperature

Contact

jennifer.macleod@qut.edu.au