Manifestation of a non-Abelian Berry phase in ap-type semiconductor system
| Autor: | Alex R. Hamilton, Oleg P. Sushkov, Oleh Klochan, L. A. Yeoh, David A. Ritchie, Tommy Li, Michelle Y. Simmons, Ashok Srinivasan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
02 engineering and technology Gauge (firearms) 021001 nanoscience & nanotechnology 01 natural sciences Fundamental interaction Magnetic field Geometric phase Topological insulator Quantum mechanics 0103 physical sciences Quantum system Gauge theory 010306 general physics 0210 nano-technology Quantum |
| Zdroj: | Physical Review B. 93 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.93.205424 |
| Popis: | Gauge theories, while describing fundamental interactions in nature, also emerge in a wide variety of physical systems. Abelian gauge fields have been predicted and observed in a number of novel quantum many-body systems, topological insulators, ultracold atoms, and many others. However, the non-Abelian gauge field, while playing the most fundamental role in particle physics, up to now has remained a purely theoretical construction in many-body physics. In this paper, we report an observation of a non-Abelian gauge field in a spin-orbit coupled quantum system. The gauge field manifests itself in quantum magnetic oscillations of a hole doped two-dimensional (2D) GaAs heterostructure. Transport measurements were performed in tilted magnetic fields, where the effect of the emergent non-Abelian gauge field was controlled by the components of the magnetic field in the 2D plane. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|