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Heavy fermion effective mass in the superconducting vortex state

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dc.contributor Wasserman, Allen
dc.contributor Warren, William W.
dc.contributor Jansen, Henri J.
dc.contributor Siemens, Philip J.
dc.contributor Barnes, Jeffrey
dc.date 2006-03-21T18:03:30Z
dc.date 2006-03-21T18:03:30Z
dc.date 2005-10-11
dc.date 2006-03-21T18:03:30Z
dc.date.accessioned 2013-10-16T07:30:47Z
dc.date.available 2013-10-16T07:30:47Z
dc.date.issued 2013-10-16
dc.identifier http://hdl.handle.net/1957/1378
dc.identifier.uri http://koha.mediu.edu.my:8181/xmlui/handle/1957/1378
dc.description Graduation date: 2006
dc.description The extended-Lifshitz-Kosevitch formalism (ELK) unifies the treatment of the de Haas-van Alphen (dHvA) effect, allowing it to transcend its traditional roles of mapping Fermi surfaces and measuring effective masses. Here we exploit the capabilities of dHvA as a probe of many-body effects to examine heavy-fermion su- perconductivity. ELK successfully describes dHvA in heavy fermion materials using a slave-boson model in mean field, and in type-II superconducing materials with the introduction of a self energy due to interactions with the vortex lattice. We propose a model for combining these two many-body effects, and examine its implications for dHvA measurements. The result retains the two important characteristics of its parent models: an enhanced effective mass and temperature-independent damping of the oscillations in the superconducting state. However no suppression of the heavy mass is predicted in the superconducting state, contrary to experiment.
dc.language en_US
dc.subject heavy fermion
dc.subject superconductor
dc.subject dHvA
dc.subject de Haas-van Alphen
dc.subject correlated electrons
dc.subject extended Lifshitz-Kosevitch
dc.subject quantum magneto-oscillations
dc.subject solid state physics
dc.subject Green's functions
dc.title Heavy fermion effective mass in the superconducting vortex state
dc.type Thesis

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