Quantum imaging of dirac materials
Abstract/Contents
- Abstract
- The realization of massless Dirac fermions in condensed matter systems has led to new opportunities for exploring exotic physics stemming from relativistic quantum mechanics and quantum field theory. "Dirac materials" which embed Dirac fermions, such as graphene and topological insulators, are now distinguished as a new class of materials and have focused large research efforts. Here we use Scanning Tunneling Microscopy/Spectroscopy (STM/STS) to probe the electronic properties of these materials with sub-atomic resolution in real space, along with spectral and momentum-space measurements. We studied two variants of these categories: molecular graphene and antimony. Antimony is a fundamental parent matrix of various topological insulator compounds, which realizes topological surface states that are comprised of Dirac fermions. Molecular graphene is a new Dirac material we built, which is an artificial graphene-like structure assembled by arranging molecules to create a honeycomb lattice of electrons drawn from normal two-dimensional surface states. These experiments provide an unprecedented level of control over Dirac fermions and allow experimental access to a set of phenomena that has previously been considered only theoretically.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2012 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Ko, Wonhee |
|---|---|
| Associated with | Stanford University, Department of Applied Physics |
| Primary advisor | Beasley, Malcolm |
| Primary advisor | Manoharan, Harindran C. (Harindran Chelvasekaran), 1969- |
| Thesis advisor | Beasley, Malcolm |
| Thesis advisor | Manoharan, Harindran C. (Harindran Chelvasekaran), 1969- |
| Thesis advisor | Goldhaber-Gordon, David, 1972- |
| Advisor | Goldhaber-Gordon, David, 1972- |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Wonhee Ko. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2012. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2012 by Wonhee Ko
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