pyTDGL: Time-dependent Ginzburg-Landau in Python

Bishop-Van Horn, Logan

doi:10.1016/j.cpc.2023.108799

pyTDGL: Time-dependent Ginzburg-Landau in Python

Journal Article · Mon May 29 00:00:00 EDT 2023 · Computer Physics Communications

DOI:https://doi.org/10.1016/j.cpc.2023.108799· OSTI ID:1985292

^[1]

SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States); Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

Time-dependent Ginzburg-Landau (TDGL) theory is a phenomenological model for the dynamics of superconducting systems. Due to its simplicity in comparison to microscopic theories and its effectiveness in describing the observed properties of the superconducting state, TDGL is widely used to interpret or explain measurements of superconducting devices. Here, we introduce pyTDGL, a Python package that solves a generalized TDGL model for superconducting thin films of arbitrary geometry, enabling simulations of vortex and phase dynamics in mesoscopic superconducting devices. pyTDGL can model the nonlinear magnetic response and dynamics of multiply connected films, films with multiple current bias terminals, and films with a spatially inhomogeneous critical temperature. We demonstrate these capabilities by modeling quasi-equilibrium vortex distributions in irregularly shaped films, and the dynamics and current-voltage-field characteristics of nanoscale superconducting quantum interference devices (nanoSQUIDs).

View Accepted Manuscript (DOE)

Research Organization:: Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1985292

Alternate ID(s):: OSTI ID: 2000222

Journal Information:: Computer Physics Communications, Journal Name: Computer Physics Communications Vol. 291; ISSN 0010-4655

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Superconductivity
phase slips
time-dependent Ginzburg-Landau
vortex dynamics

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