Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"iron-based superconductor"”.
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Josephson Effects in the Iron-Based Superconductor FeTe$_{1-x}$Se$_{x}$
The iron-based superconductor FeTe$_{1-x}$Se$_x$ has emerged as a promising platform for combining superconductivity and topology in a single system, for the realization of topological quantum computing. Besides this, FeTe$_{1-x}$Se$_x$ hosts rich physical phenomena such as S$\pm$ …
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Unconventional Superconductivity in the Layered Iron Germanide YFe2Ge2
… of superconductivity in LaFePO, numerous iron-based superconductors have been identified within diverse structure families. Superconductivity in the layered iron germanide YFe$_2$Ge$_2$ was first reported in 2014. It stands out from the commonly known iron- based superconductor families …
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Insights into correlated electron systems from first-principles quantum Monte Carlo
… room-temperature chemistry measurements. For the iron-based superconductor, FeSe, I report on quantum Monte Carlo calculations that accurately reproduce the structural properties, including the lattice constants and the equation-of-state. In FeSe, I also found a coupling between the structure, …
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Correlated low temperature states of YFe2Ge2 and pressure metallised NiS2
… rare case of a non-pnictide and non-chalcogenide iron based superconductor with the 1-2-2 structure. This thesis describes growth and study of a new generation of high quality YFe$_{2}$Ge$_{2}$ samples with residual resistance ratios reaching 200. Measurements of resistivity, heat capacity and …
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Optical and core-level X-ray spectroscopy of correlated two-dimensional materials
… optical excitations, i.e. excitons, in nickel-based vdW magnets. We employ Ni-L₃ edge resonant inelastic X-ray scattering (RIXS) to access a q-resolved and site-specific view into the excitation spectra. We identify the sharp excitons with spin-forbidden intra-configurational multiplets of …
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High pressure studies of superconductivity and anomalous normal states in novel quantum materials
… strange metal, low-dimensional system, iron-based superconductivity, and a geometrically frustrated magnetic system. We used pressure as the primary tool in our studies, not only as one of the tuning parameters for accessing or tuning away from the quantum critical point but also to …
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Point-contact Andreev reflection studies on superconductors
… on PCARS as applied to various unconventional superconductors, such as NbSe$_2$, the borocarbide family RNi$_2$B$_2$C (R=Lu, Y) and the recently-discovered, iron-based superconductors AFe$_2$As$_2$ (A=Ba, Sr) with both hole and electron doping. The superconducting gap distribution observed from …