Electronic Noise Studies of Underdoped High Temperature Superconductors

We use electronic transport noise measurements in order to probe normal state properties of high temperature superconductors with the goal of providing further detail about the environment in which the necessary pairing of electrons occurs. We observe an unusual noise component near and below about 200 K in the normal state of underdoped YBCO and Ca-YBCO films. We use several experimental noise-transport techniques in order to elucidate dynamic, thermodynamic and symmetry properties of the underlying fluctuations that cause this excess noise. We have found that this region of noise displays many features, such as large fluctuators, aging effects and a complicated magnetic sensitivity, that one would expect for symmetry-breaking collective electronic state.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Caplan, David

Contributors dc:contributor

• Michael Weissman

• Physics, High Temperature

Language dc:language

eng

Identifier

(MiAaPQ)AAI3391894

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/80604