Uncorrelated behavior of fluxoids in superconducting double networks

Sochnikov, Ilya; Božović, I.; Shaulov, A.; Yeshurun, Y.

doi:10.1103/physrevb.84.094530

Cited by 7 publications

(6 citation statements)

References 29 publications

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“…3. All curves display a strong hysteresis during these cycles, in sharp contrast to most of the other related experiments that did not report hysteretic effects of electrical transport properties [7,8,10,11,13,[15][16][17]. Only a tiny hysteresis of the critical current was reported in perforated Sn [1,5] and YBCO films [4] with 1 µm inter-hole distance.…”

Section: Resultscontrasting

confidence: 67%

“…Investigations of magnetic vortices in superconductors interacting with periodic pinning arrays have been motivated by the rich diversity of different physical phenomena that result from the interplay of pinning, elastic, and thermal energies and the influences of the dimensionality, anisotropy, and spatial arrangement of vortices [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. But also, the motion of vortices in a superconductor gives rise to dissipation that is detrimental for most technical applications.…”

Section: Introductionmentioning

confidence: 99%

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Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

et al. 2017

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Square arrays of sub-micrometer columnar defects in thin YBa2Cu3O 7−δ (YBCO) films with spacings down to 300 nm have been fabricated by a He ion beam projection technique. Pronounced peaks in the critical current and corresponding minima in the resistance demonstrate the commensurate arrangement of flux quanta with the artificial pinning landscape, despite the strong intrinsic pinning in epitaxial YBCO films. Whereas these vortex matching signatures are exactly at predicted values in field-cooled experiments, they are displaced in zero-field cooled, magnetic-field ramped experiments, conserving the equidistance of the matching peaks and minima. These observations reveal an unconventional critical state in a cuprate superconductor with an artificial, periodic pinning array. The long-term stability of such out-of-equilibrium vortex arrangements paves the way for electronic applications employing fluxons.

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Section: Resultscontrasting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

et al. 2017

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“…The proposed model is further tested on MROs of superconducting rings with different sizes [45,57] and nanopatterned films [39] as well (see Supporting Information). The effectiveness of the presented model and its direct dependence on the geometry of multiply connected samples can provide a relevant contribution for solving issues on asymmetric rings presenting oscillation of critical current depending on the direction of injected current.…”

Section: The Model Validationmentioning

confidence: 99%

“…[ 34 ] The interference shows up through the sinusoidal oscillation of the resistance that

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for superconducting samples

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is usually superimposed on a parabolic background (PB). [ 35,36 ] The origin of the PB is attributed to the growth of supercurrents, [ 37–39 ] but a dedicated discussion of the way vortex supercurrents affect the onset of the PB is still missing in literature.…”

Section: Introductionmentioning

confidence: 99%

Quantum Interference by Vortex Supercurrents

Papari

Fomin

2023

Physica Rapid Research Ltrs

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The origin of the parabolic background of magnetoresistance oscillations measured in finite‐width superconducting mesoscopic rings with input and output stubs and in patterned films is analyzed. The transmission model explaining the sinusoidal oscillation of magnetoresistance is extended to address the parabolic background as a function of the magnetic field. Apart from the interference mechanism activated by the ring, pinned superconducting vortices as topological defects introduce a further interference‐based distribution of supercurrents that affects, in turn, the voltmeter‐sensed quasiparticles. The onset of vortices changes the topology of the superconducting state in a mesoscopic ring in such a way that the full magnetoresistance dynamics can be interpreted due to the interference of the constituents of the order parameter induced by both the ring with its doubly connected topology and the vortex lattice in it.

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“…Subsequent studies extended phase-related characteristics into twodimensional (2D) superconducting nanostructures. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] This phase coherence in superconductors is an intrinsic property, providing a powerful tool for dealing with problems of superconductors under magnetic field, such as the pairing puzzles in insulating state, [6] anomalous metallic state [7] and magnetoresistance peak anomaly [8] in the superconducting to insulating transition (SIT), as well as pairing symmetry issues in unconventional superconductors. [24,25] In terms of superconducting wire network, flux quantization is required at every single cell.…”

Section: Introductionmentioning

confidence: 99%

Finite superconducting square wire-network based on two-dimensional crystalline Mo₂C

Liu¹,

Yang²,

Xu³

et al. 2022

Chinese Phys. B

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Superconducting wire-networks are paradigms to study Cooper pairing issues, vortex dynamics and arrangements. Recently, emergent low-dimensional crystalline superconductors are reported in the minimal-disorder limit, providing novel platforms to reveal vortices-related physics. Study on superconducting loops with high-crystallinity is thus currently demanded. Here, we report fabrication and transport measurement of finite square-network based on two-dimensional crystalline superconductor Mo2C. We observe oscillations in the resistance as a function of the magnetic flux through the loops. Resistance dips at both matching field and fractional fillings are revealed. Temperature and current evolutions are carried out in magnetoresistance to study vortex dynamics. The amplitude of oscillation is enhanced due to the interaction between thermally activated vortices and the currents induced in the loops. The driving current reduces effective activation energy for vortex, giving rise to stronger vortex interaction. Moreover, by thermally activated vortex creep model, we derive effective potential barrier for vortex dissipation, which shows well-defined correspondence with structures in magnetoresistance. Our work shows that low-dimensional crystalline superconducting network based on Mo2C possesses pronounced potential in studying the modulation of vortex arrangements and dynamics, paving the way for further investigations on crystalline superconducting network with various configurations.

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Uncorrelated behavior of fluxoids in superconducting double networks

Cited by 7 publications

References 29 publications

Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

Quantum Interference by Vortex Supercurrents

Finite superconducting square wire-network based on two-dimensional crystalline Mo₂C

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Uncorrelated behavior of fluxoids in superconducting double networks

Cited by 7 publications

References 29 publications

Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

Hysteretic Vortex-Matching Effects in High- Tc Superconductors with Nanoscale Periodic Pinning Landscapes Fabricated by He Ion-Beam Projection

Quantum Interference by Vortex Supercurrents

Finite superconducting square wire-network based on two-dimensional crystalline Mo2C

Contact Info

Product

Resources

About

Finite superconducting square wire-network based on two-dimensional crystalline Mo₂C