Visualising the Charge and Cooper-Pair Density Waves in Cuprates
Nonfiction, Science & Nature, Technology, Superconductors & Superconductivity, Science, Physics, Spectrum Analysis
| Author: | Stephen Edkins | ISBN: | 9783319659756 |
| Publisher: | Springer International Publishing | Publication: | August 31, 2017 |
| Imprint: | Springer | Language: | English |
| Author: | Stephen Edkins |
| ISBN: | 9783319659756 |
| Publisher: | Springer International Publishing |
| Publication: | August 31, 2017 |
| Imprint: | Springer |
| Language: | English |
This thesis reports on the use of scanning tunnelling microscopy to elucidate the atomic-scale electronic structure of a charge density wave, revealing that it has a d-symmetry form factor, hitherto unobserved in nature. It then details the development of an entirely new class of scanned probe: the scanning Josephson tunnelling microscope. This scans the Josephson junction formed between a cuprate superconducting microscope tip and the surface of a cuprate sample, thereby imaging the superfluid density of the sample with nanometer resolution. This novel method is used to establish the existence of a spatially modulated superconducting condensate, something postulated theoretically over half a century ago but never previously observed.
This thesis reports on the use of scanning tunnelling microscopy to elucidate the atomic-scale electronic structure of a charge density wave, revealing that it has a d-symmetry form factor, hitherto unobserved in nature. It then details the development of an entirely new class of scanned probe: the scanning Josephson tunnelling microscope. This scans the Josephson junction formed between a cuprate superconducting microscope tip and the surface of a cuprate sample, thereby imaging the superfluid density of the sample with nanometer resolution. This novel method is used to establish the existence of a spatially modulated superconducting condensate, something postulated theoretically over half a century ago but never previously observed.
