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Showing 1 to 7 of 7 for “"Andreev bound states"”.
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Microwave Spectroscopy and Transport Measurements of Andreev Bound States in Superconductor – Semiconductor Josephson Junctions
… physics inherent to semiconducting devices and Andreev bound states are the microscopic states which mediate transport through these junctions. In this thesis a series of experiments aimed at understanding Andreev bound states in Josephson junction devices are presented. RF reflectometry …
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MICROWAVE STUDY OF THE PROPERTIES OF UNCONVENTIONAL SUPERCONDUCTING SYSTEMS
… an example d-wave superconductor, a signature of Andreev bound states was also found. A phenomenological model to explain the observed properties of the Andreev bound states is also discussed. Lastly, an effort to broaden the adaptability of the new technique to samples of more general morphology …
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Superconducting tunneling spectroscopy of graphene and graphene nanostructures
… which can host quantum dot(s) and thus support Andreev bound states (ABS). The fact that ABS are observed only in the narrow (10 nm wide) nano constriction stresses the importance of coupling between the quantum dot and the contact leads for the observation of ABS. The reason why the quantum dot …
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Demagnetisation of solid 3He and supercritical superflow
… regime allows for studying the dynamics of the Andreev bound states on the surface of the wire. This work presents a recent experimental estimation of the relaxation time of the bound states and a description of the relaxation mechanism. Next, the work describes the design and initial testing of …
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Phase-sensitive probes of extended topological Josephson junctions
… the possibility of generating Majorana bound states (MBSs) in these hybrid systems has provided motivation for many experiments targeting signatures of MBSs. In recent years, theoretical and experimental progress has been made in studying the Josephson effect in …
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Planar Tunneling Into YBCMO (M = Zinc, Nickel) Thin Films
… of the well studied Pb and YBCO density of states. The ab-plane tunneling conductance of Zn and Ni doped YBCO films shows distinct features. A gap-like feature that decreases in energy with increasing doping concentration is observed, together with the zero bias conductance peak, comprised …
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Imaging topological superconductivity in UTe_2
… a new wave of interest in p-wave superconducting states as it offers the exciting prospect of measuring unusual surface electronic states, such as zero-energy Andreev bound states, and helical or chiral topological surface states. The latter state being a prerequisite for non-Abelian fermion …