Thin film growth of CaAgAs by molecular beam epitaxy
| Autor: | Yuta Tomizawa, Takafumi Hatano, S Ohta, Kazumasa Iida, Hiroshi Ikuta, I. Nakamura, Takahiro Urata |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Surface (mathematics)
Materials science Condensed matter physics Magnetoresistance 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic field Condensed Matter::Materials Science Electrical resistivity and conductivity Topological insulator Bulk samples 0103 physical sciences General Materials Science Thin film 010306 general physics 0210 nano-technology Molecular beam epitaxy |
| Zdroj: | Journal of physics. Condensed matter : an Institute of Physics journal. 32(43) |
| ISSN: | 1361-648X |
| Popis: | We have grown thin films of CaAgAs by molecular beam epitaxy, which was theoretically proposed to be a topological insulator. The temperature dependence of resistivity and the carrier concentration at 4 K were similar to the reported results of bulk samples. However, the magnetoresistance exhibited a steep increase at low magnetic fields, a behavior not observed for bulk samples. This steep increase of resistivity is ascribable to the weak antilocalization effect and provides clues to the nature of the topological surface state of CaAgAs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|