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A micro-SQUID with dispersive readout for magnetic scanning microscopy
Farshad Foroughi, Jan-Michael Mol, Tristan Mueller +3
We have designed and characterized a micro-SQUID with dispersive readout for use in low temperature scanning probe microscopy systems. The design features a capacitively shunted RF…
Fluxoid fluctuations in mesoscopic superconducting rings
Julie A. Bert, Nicholas C. Koshnick, Hendrik Bluhm +1
Rings are a model system for studying phase coherence in one dimension. Superconducting rings have states with uniform phase windings that are integer multiples of 2 called flux…
Fluctuation Superconductivity in Mesoscopic Aluminum Rings
Nicholas C. Koshnick, Hendrik Bluhm, Martin E. Huber +1
Fluctuations are important near phase transitions, where they can be difficult to describe quantitatively. Superconductivity in mesoscopic rings is particularly intriguing because…
Two-dimensional vortex behavior in highly underdoped YBa_2Cu_3O_{6+x} observed by scanning Hall probe microscopy
J. W. Guikema, Hendrik Bluhm, D. A. Bonn +3
We report scanning Hall probe microscopy of highly underdoped superconducting YBa_2Cu_3O_{6+x} with T_c ranging from 5 to 15 K which showed distinct flux bundles with less than one…
Multiple fluxoid transitions in mesoscopic superconducting rings
Hendrik Bluhm, Nicholas C. Koshnick, Martin E. Huber +1
The authors report magnetic measurements of fluxoid transitions in mesoscopic, superconducting aluminum rings. The transitions are induced by applying a flux to the ring so that th…
Stability of half-quantum vorticies in p_x+ip_y superconductors
Suk Bum Chung, Hendrik Bluhm, Eun-Ah Kim
We consider the stability conditions for half-quantum vortices in quasi two dimensional superconductor (such as is believed to be) through energetics…