AC-driven microwave loss modulation in a fluxonic metamaterial

Abstract

We introduce a fluxonic metamaterial on the basis of nanopatterned superconducting Nb microstrips and employ it for modulation and synthesis of quantized loss levels in the lower GHz range by a sine-wave quasistatic ac drive. The nanopatterns are uniaxial nanogrooves with identical and different slope steepness, which induce a pinning potential of the washboard type for Abrikosov vortices. For the fundamental matching field, when the location of vortex rows geometrically matches the nanogrooves, the following effects are observed: The forward transmission coefficient $S_{21}(f)$ of the microstrips can be controllably modulated within a range of about $3$\,dB by the ac current. For the sample with symmetric grooves, depending on the choice of the operation point in the current-voltage curve, the shape and the duty cycle of the output signal can be tuned. For the sample with asymmetric grooves, depending on the ac amplitude, a sine-to-triangular or a sine-to-rectangular pulse shape conversion is observed. The possibility of synthesizing quantized loss levels by a serial connection of the two samples with different nanopatterns is exemplified and can be used for the development of multilevel excess-loss-based fluxonic devices.

12 pages, 5 figures

References in corpus (9)

• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• Reliable determination of vortex parameters from measurements of the microwave complex resistivity
• Reversible Vortex Ratchet Effects and Ordering in Superconductors with Simple Asymmetric Potential Arrays
• Carrier multiplication in graphene under Landau quantization
• Microwave response of thin niobium films under perpendicular static magnetic fields
• Reversible Ratchet Effects for Vortices in Conformal Pinning Arrays
• AC-driven Vortices and the Hall Effect in a Superconductor with a Tilted Washboard Pinning Potential
• Dual cut-off dc-tunable microwave low-pass filter on superconducting Nb microstrips with asymmetric nanogrooves
• ${}^4$He sample probe for combined microwave and dc transport measurements

Cited by in corpus (17)

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• Pinning effects on self-heating and flux-flow instability in superconducting films near $T_c$
• Pinning effects on flux flow instability in epitaxial Nb thin films
• Reduction of microwave loss by mobile fluxons in grooved Nb films
• Effect of electron irradiation and Pr doping on the charge transport in YBCO single crystals
• Interplay of flux guiding and Hall effect in Nb films with nanogrooves
• Fast Dynamics of Vortices in Superconductors
• Pinning effects on hot-electron vortex flow instability in superconducting films
• Tuning electric charge scattering in YBCO single crystals via irradiation with MeV electrons
• Zero-bias Shapiro steps in asymmetric pinning nanolandscapes
• Directional driving of vortex lines with oscillating magnetic field
• Vortex rivers and multiple voltage transitions in superconducting MgB${}_2$ thin films
• Nonreciprocal magnon fluxonics upon ferromagnet/superconductor hybrids