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In situ magnetic flux vortex visualization in time-dependent Ginzburg-Landau superconductor simulations

Hanqi Guo, Tom Peterka, Andreas Glatz
2017 2017 IEEE Pacific Visualization Symposium (PacificVis)  
Figure 1 : 1 Comparison between in situ (a and b) and post hoc (c and d) visualization of magnetic flux vorticies in superconductors.  ...  Vortex extraction and tracking We distinguish the concepts of fluid flow vortices from magnetic flux vortices, which are fundamentally different.  ... 
doi:10.1109/pacificvis.2017.8031581 dblp:conf/apvis/GuoPG17 fatcat:6b2cruivnvftvocnymg5qa5amu

Tracking vortices in superconductors: Extracting singularities from a discretized complex scalar field evolving in time

Carolyn L. Phillips, Hanqi Guo, Tom Peterka, Dmitry Karpeyev, Andreas Glatz
2016 Physical review. E  
In type-II superconductors, the dynamics of magnetic flux vortices determine their transport properties.  ...  PRE 91 (2), 023311] we introduced a method for extracting vortices from the discretized complex order parameter field generated by a large-scale simulation of vortex matter.  ...  magnets, and complex order parameters in superfluids and superconductors.  ... 
doi:10.1103/physreve.93.023305 pmid:26986437 fatcat:lr6mn5gwm5ad3kmv2zcrkspxey

Detecting vortices in superconductors: Extracting one-dimensional topological singularities from a discretized complex scalar field

Carolyn L. Phillips, Tom Peterka, Dmitry Karpeyev, Andreas Glatz
2015 Physical Review E  
By representing the field as the set of vortices, this method also massively reduces the data footprint of the simulations and provides the data structures for further analysis and feature tracking.  ...  Extracting their precise positions and motion from discretized numerical simulation data is an important, but challenging task.  ...  Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public  ... 
doi:10.1103/physreve.91.023311 pmid:25768639 fatcat:ggrcmuhjprbelpdfjd7rsetxuy

Perspective: Challenges and Transformative Opportunities in Superconductor Vortex Physics [article]

Serena Eley, Andreas Glatz, Roland Willa
2021 arXiv   pre-print
in predictive simulations and the benefits of artificial intelligence, as well as controlling and exploiting vortices in quantum information applications.  ...  In superconductors, the motion of vortices introduces unwanted dissipation that is disruptive to applications.  ...  Going beyond these ML-improved simulations, one can build quantitative data-driven AI approaches for superconductors that will enable, e.g. predicting the critical current phase diagram and extracting  ... 
arXiv:2105.00055v1 fatcat:3vppnergpfax3m76cxvqjtxc7y

Study of Vortex Dynamics and Phase Transitions in Superconducting Thin Films [article]

Indranil Roy
2020 arXiv   pre-print
Here we show magnetic field induced granularity gives rise to pseudogap phase which is utilized to explain superconductor to insulator-like transition in stronger disorder.  ...  In Chapter VI, we study the possibility of quantum fluctuation of vortices in weakly pinned a-MoGe thin films.  ...  This variation of ( ) is used to extract value of Δ from experimental data.  ... 
arXiv:2012.00709v1 fatcat:h2u4yola75aq5j7xgok3et5ewu

Vortices at Microwave Frequencies

Enrico Silva, Nicola Pompeo, Oleksandr V. Dobrovolskiy
2017 Physical Sciences Reviews  
It is then important to understand the basics of the physics of vortices moving at high frequency, as well as to understand what information the experiments can yield (and what they can not).  ...  The aim of this brief review is to introduce the readers to some basic aspects of the physics of vortices under a microwave electromagnetic field, and to guide them to an understanding of the experiment  ...  It was developed by [59] to observe flux lines and dynamics of vortices in superconductors under magnetic fields.  ... 
doi:10.1515/psr-2017-8004 fatcat:zj6btlrdnvdizfxhtdxo3qi7uq

Superdiffusion of quantized vortices uncovering scaling laws in quantum turbulence

Yuan Tang, Shiran Bao, Wei Guo
2021 Proceedings of the National Academy of Sciences of the United States of America  
statistics of the vortices in quantum-fluid turbulence, i.e., quantum turbulence (QT).  ...  Here we report an experiment where a tangle of vortices in superfluid 4He are decorated with solidified deuterium tracer particles.  ...  Vinen and D. Kivotides. We also thank S. Yui, H. Kobayashi, and M. Tsubota for communicating their recent simulation results.  ... 
doi:10.1073/pnas.2021957118 pmid:33526696 fatcat:ymjlyjda2nb43gzvw7fo5ezgli

Class of nonperturbative configurations in Abelian-Higgs models: Complexity from dynamical symmetry breaking

M. Gleiser, J. Thorarinson
2009 Physical Review D  
We present a numerical investigation of the dynamics of symmetry breaking in both Abelian and non-Abelian [S U (2)] Higgs models in three spatial dimensions.  ...  For the Abelian-Higgs model, our lattice implementation allows us to map the range of parameter space -- the values of β = (m_s /m_v)^2 -- where such configurations exist and to follow them for times t  ...  Acknowledgments MG and JT were partially supported by a National Science Foundation grant PHY-0757124. We also would like to thank the NCSA Teragrid cluster for access under grant number PHY-070021.  ... 
doi:10.1103/physrevd.79.025016 fatcat:ia5poapqqvhi3a3uj2do6a7mbe

In Situ Data Summaries for Flexible Feature Analysis in Large-Scale Multiphase Flow Simulations [article]

Soumya Dutta and Terece Turton and David Rogers and Jordan Musser and James Ahrens and Ann Almgren
2022 arXiv   pre-print
To address these issues and allow the application scientists to explore the bubble dynamics in an efficient and timely manner, we have developed an end-to-end visual analytics pipeline that enables in  ...  Despite the proven accuracy of MFIX-Exa in modeling bubbling phenomena, the very-large size of the output data prohibits the use of traditional post hoc analysis capabilities in both storage and I/O time  ...  ACKNOWLEDGMENTS The authors would like to thank the Department of Energy and Los Alamos National Laboratory for the funding and support in carrying out this research.  ... 
arXiv:2201.02557v1 fatcat:lwlxfpkdmbdt5hijyw5znrkhxa

Material Laws and Numerical Methods in Applied Superconductivity [article]

H. S. Ruiz
2012 arXiv   pre-print
in -3D- configurations 4.3 T-states in -3D- configurations 4.4 CT-states in -3D- configurations 4.5 Smooth critical states in -3D- configurations Appendix I Critical angle gradient in -3D- configurations  ...  Contents Preface I Electromagnetism of type II superconductors 1 General Statements Of The Critical State 1.1 The CS In The Maxwell Equations Formalism 1.2 The CS Regime And The MQS Limit 2 Variational  ...  Appendix I Critical angle gradient in "3D" configurations On the basis of minimum complexity, in this appendix the flux cutting criterion for 3D configurations will be revised under the assumption of a  ... 
arXiv:1203.2159v1 fatcat:3yvywwtdqfbqthke75ameztn6e

Field- and temperature-induced topological phase transitions in the three-dimensionalN-component London superconductor

J. Smiseth, E. Smørgrav, E. Babaev, A. Sudbø
2005 Physical Review B  
The phase diagram and critical properties of the N-component London superconductor are studied both analytically and through large-scale Monte-Carlo simulations in d=2+1 dimensions (components here refer  ...  to different replicas of the complex scalar field).  ...  Both heavy and light vortices carry only a fraction of magnetic flux quantum in this state.  ... 
doi:10.1103/physrevb.71.214509 fatcat:vzggbluz6zg2dp5timahanlvke

Interplay of chemical disorder and electronic inhomogeneity in unconventional superconductors

Ilija Zeljkovic, Jennifer E. Hoffman
2013 Physical Chemistry, Chemical Physics - PCCP  
In superconductors, nonstoichiometric dopants are typically necessary to achieve a high transition temperature, while both structural and chemical defects are used to pin vortices and increase critical  ...  In this perspective, we present an overview of STM studies on chemical disorder in unconventional superconductors, and discuss how dopants, impurities and adatoms may be used to probe, pin or enhance the  ...  In contrast, in type II superconductors, magnetic flux penetrates as quantized flux tubes called vortices.  ... 
doi:10.1039/c3cp51387d pmid:23828027 fatcat:eigsl6l4qrg2rbpnymgawwllky

Statics and Dynamics of Skyrmions Interacting with Pinning: A Review [article]

C. Reichhardt, C.J.O. Reichhardt, M.V. Milosevic
2021 arXiv   pre-print
Magnetic skyrmions are topologically stable nanoscale particle-like objects that were discovered in 2009.  ...  We also discuss future directions and open questions related to the pinning and dynamics in skyrmion systems.  ...  From this data, it is possible to extract an estimated skyrmion velocity v d , which is plotted versus j in Fig. 30(c) .  ... 
arXiv:2102.10464v1 fatcat:eqhxtcmnwveqrmztdwv62yw4s4

Superconductivity and Quantum Oscillations in Single Crystals of the Compensated Semimetal CaSb_2 [article]

M. Oudah, J. Bannies, D. A. Bonn, M. C. Aronson
2022 arXiv   pre-print
We characterize the superconducting state and find that Cooper pairs have moderate-weak coupling, and the superconducting transition in specific heat down to 0.22 K deviates from that of a BCS superconductor  ...  Here, we report superconductivity and compensation of electrons and holes in single crystals of the nodal-line semimetal CaSb_2.  ...  However, the significant flux expulsion in the FC data suggests that pinning of flux vortices is weak.  ... 
arXiv:2106.06175v2 fatcat:6ge2btedbbew5mf2lhbul6jmvy

When are Superconductors Really Superconducting?

C. J. Lobb
2004 Journal of Superconductivity  
We acknowledge Dr Todd Eberspacher for assistance with the TDR data collection, and acknowledge financial support for this work from the Department of Energy (Grant DEFG03-86ER45245) and Office of Naval  ...  Perry, and K. Collins for many valuable discussions and comments.  ...  flux up through the layers, and Josephson vortices (or strings), which carry magnetic flux parallel to the layers but no net flux perpendicular to the layers.  ... 
doi:10.1007/s10948-004-0776-x fatcat:mbwesdxigjfqrn4wunltq4uxxq
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