Visualising the Charge and Cooper-Pair Density Waves in Cuprates
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Beschreibung
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.
Nominated as an outstanding Ph.D. thesis by the University of St Andrews, Scotland, & Cornell University, New York, USA Offers an accessible introduction to the physics of charge and pair density waves Presents a pedagogical exposition of the theoretical and practical considerations of implementing a scanned Josephson tunnelling microscope Reviews advances in the study of charge and pair density waves in cuprate superconductors Includes supplementary material: sn.pub/extras
Autor*in
Stephen Edkins
Themen in »Visualising the Charge and Cooper-Pair Density Waves in Cuprates«
Scanning Tunnelling Microscopy (STM) Scanned Josephson Tunnelling Microscopy (SJTM) Charge Density Waves in Cuprates Cooper Pair Density Wave Nanometer-scale Imaging Spatially Modulated Superconducting Condensate Electronic Structure of CDW d-symmetry Form Factor of CDW