Raw Experimental Data for work presented in "Imaging collective behavior in an rf-SQUID metamaterial tuned by DC and RF magnetic  fields"

Zhuravel, Alexander; Bae, Seokjin

Raw Experimental Data for work presented in "Imaging collective behavior in an rf-SQUID metamaterial tuned by DC and RF magnetic fields"

dc.contributor.advisor	Anlage, Steven
dc.contributor.author	Zhuravel, Alexander
dc.contributor.author	Bae, Seokjin
dc.date.accessioned	2019-02-06T16:01:03Z
dc.date.available	2019-02-06T16:01:03Z
dc.date.issued	2019
dc.description	This is the raw data in Figs. 2, 3, and 4 of the main text of the paper.	en_US
dc.description.abstract	We examine the collective behavior of two-dimensional nonlinear superconducting metamaterials using a non-contact spatially resolved imaging technique. The metamaterial is made up of sub-wavelength nonlinear microwave oscillators in a strongly coupled 27x27 planar array of radio-frequency Superconducting QUantum Interference Devices (rf-SQUIDs). By using low temperature laser scanning microscopy we image microwave currents in the driven SQUIDs while in non-radiating dark modes and identify the clustering and uniformity of like-oscillating meta-atoms. We follow the rearrangement of coherent patterns due to meta-atom resonant frequency tuning as a function of external dc and rf magnetic flux bias. We find that the rf current distribution across the SQUID array at zero dc flux and small rf flux reveals a low degree of coherence. By contrast, the spatial coherence improves dramatically upon increasing of rf flux amplitude, in agreement with simulation. The paper can be accessed here: https://doi.org/10.1063/1.5064658	en_US
dc.description.sponsorship	This work is supported by Volkswagen Foundation grant No. 90284, DFG grant No. US18/15, MESRF Contract No. K2-2017-081, NSF grant No. DMR-1410712, and DOE grants No. DESC0017931, DESC0018788.	en_US
dc.description.uri	https://doi.org/10.1063/1.5064658
dc.identifier	https://doi.org/10.13016/o7kj-hrzk
dc.identifier.uri	http://hdl.handle.net/1903/21732
dc.language.iso	en_US	en_US
dc.relation.isAvailableAt	College of Computer, Mathematical & Natural Sciences	en_us
dc.relation.isAvailableAt	Physics	en_us
dc.relation.isAvailableAt	Digital Repository at the University of Maryland	en_us
dc.relation.isAvailableAt	University of Maryland (College Park, MD)	en_us
dc.subject	rf SQUID, Metamaterial, Laser Scanning Microscopy	en_US
dc.title	Raw Experimental Data for work presented in "Imaging collective behavior in an rf-SQUID metamaterial tuned by DC and RF magnetic fields"	en_US
dc.type	Dataset	en_US