Circuit quantum electrodynamics of granular aluminum resonators
Granular aluminum (grAl) is a promising high kinetic inductance material for detectors,
amplifiers, and qubits. Here we model the grAl structure, consisting of pure aluminum grains …
amplifiers, and qubits. Here we model the grAl structure, consisting of pure aluminum grains …
Review of recent progress on THz spectroscopy of quantum materials: superconductors, magnetic and topological materials
Recently, the THz spectroscopy has been efficiently used to investigate varieties of quantum
materials, including superconductors, novel magnetic, and topological materials. These …
materials, including superconductors, novel magnetic, and topological materials. These …
Enhanced Cooper pairing versus suppressed phase coherence shaping the superconducting dome in coupled aluminum nanograins
The development of the fundamental superconducting (SC) energy scales—the SC energy
gap Δ and the superfluid stiffness J—of granular aluminum, ie, thin films composed of …
gap Δ and the superfluid stiffness J—of granular aluminum, ie, thin films composed of …
Nonrelativistic dynamics of the amplitude (Higgs) mode in superconductors
Despite the formal analogy with the Higgs particle, the amplitude fluctuations of the order
parameter in weakly coupled superconductors do not identify a real mode with a Lorentz …
parameter in weakly coupled superconductors do not identify a real mode with a Lorentz …
Aluminium-oxide wires for superconducting high kinetic inductance circuits
H Rotzinger, ST Skacel, M Pfirrmann… - Superconductor …, 2016 - iopscience.iop.org
We investigate thin films of conducting aluminium-oxide, also known as granular aluminium,
as a material for superconducting high quality, high kinetic inductance circuits. The films are …
as a material for superconducting high quality, high kinetic inductance circuits. The films are …
Eliminating quantum phase slips in superconducting nanowires
In systems with reduced dimensions, quantum fluctuations have a strong influence on the
electronic conduction, even at very low temperatures. In superconductors, this is especially …
electronic conduction, even at very low temperatures. In superconductors, this is especially …
Optical signatures of the superconducting Goldstone mode in granular aluminum: Experiments and theory
Recent advances in the experimental growth and control of disordered thin films,
heterostructures, and interfaces provide fertile ground for the observation and …
heterostructures, and interfaces provide fertile ground for the observation and …
Application of the Mattis-Bardeen theory in strongly disordered superconductors
The low-energy optical conductivity of conventional superconductors is usually well
described by Mattis-Bardeen (MB) theory, which predicts the onset of absorption above an …
described by Mattis-Bardeen (MB) theory, which predicts the onset of absorption above an …
Optical conductivity of granular aluminum films near the Mott metal-to-insulator transition
We report measurements of the energy gap of granular aluminum films by THz
spectroscopy. We find that as the grains progressively decouple, the coupling ratio 2 Δ (0)/k …
spectroscopy. We find that as the grains progressively decouple, the coupling ratio 2 Δ (0)/k …
Superconducting energy scales and anomalous dissipative conductivity in thin films of molybdenum nitride
J Simmendinger, US Pracht, L Daschke, T Proslier… - Physical Review B, 2016 - APS
We report investigations of molybdenum nitride (MoN) thin films with different thickness and
disorder and with superconducting transition temperature 9.89 K≥ T c≥ 2.78 K. Using …
disorder and with superconducting transition temperature 9.89 K≥ T c≥ 2.78 K. Using …