High magnetic field response of superconductivity dome in quantum artificial High Tc superlattices with variable geometry

Abstract

It is known that cuprate artificial high Tc superlattices (AHTS) with period d, composed of quantum wells confining interface space charge in stoichiometric Mott insulator layers (S), with thickness L, at the interface with overdoped normal metallic cuprate layers (N) show a superconducting dome by tuning the geometric L over d ratio of the SNSN superlattice with the top predicted by quantum material design engineering quantum size effects. Here we report high-field magneto transport measurements up to 41 Tesla of AHTS across the entire superconducting dome. The results show the universal upward-concave behavior of the temperature dependent upper critical magnetic field in low Tc samples at rising edge and drop edge of the dome providing strong evidence consistent with two-band superconductivity for two-band superconductivity in agreement with multigap theory used for quantum design of the SNSN superlattices. The measured superconducting coherence length demonstrates that atomic-scale engineering controls not only the critical temperature but also the intrinsic pair size at Fano-Feshbach resonances physics paving the way toward next generation quantum devices and shedding light on unconventional superconductivity.

arXiv comment12 pages, 6 figures

References in corpus (30)

• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Direct measurement of the upper critical field in a cuprate superconductor
• Limits of the upper critical field in dirty two-gap superconductors
• On the Ginzburg-Landau Analysis of the Upper Critical Field Hc2 in MgB2
• Anisotropy of the upper critical field in a Co-doped BaFe2As2 single crystal
• Two-gap and paramagnetic pair-breaking effects on upper critical field of SmFeAsO${}_{0.85}$ and SmFeAsO${}_{0.8}$F${}_{0.2}$ single crystals
• Two-band superconductors: Hidden criticality deep in the superconducting state
• Anisotropic Superconductivity in Epitaxial MgB2 Films
• Band-edge BCS-BEC crossover in a two-band superconductor: physical properties and detection parameters
• Two-band superconductivity in doped SrTiO${}_3$ films and interfaces
• Universal behavior of the upper critical field in iron based superconductors
• Twisted cuprate van der Waals heterostructures with controlled Josephson coupling
• High-field phase-diagram of Fe arsenide superconductors
• Upper critical field in electron-doped cuprate superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$: two-gap model
• Upper critical field as a probe for multiband superconductivity in bulk and interfacial STO
• Evolution of Complexity in Out-of-Equilibrium Systems by Time-Resolved or Space-Resolved Synchrotron Radiation Techniques
• Resonant pair-exchange scattering and BCS-BEC crossover in a system composed of dispersive and heavy incipient bands: a Feshbach analogy
• Spin-orbit coupling controlling the superconducting dome of artificial superlattices of quantum wells
• Coherence lengths for superconductivity in the two-orbital negative-U Hubbard model
• Constrained weak-coupling superconductivity in multiband superconductors
• High-Tc superconducting dome in artificial heterostructures made of nanoscale quantum building blocks
• Multi-band description of the upper critical field of bulk FeSe
• Tunable BCS-BEC crossover, reentrant, and hidden quantum phase transitions in two-band superconductors with tunable valence and conduction bands
• Cuprate Twistronics for Quantum Hardware
• Emergent Fano-Feshbach resonance in two-band superconductors with an incipient quasi-flat band: Enhanced critical temperature evading particle-hole fluctuations
• Upper critical magnetic field and multiband superconductivity in artificial high-Tc superlattices of nano quantum wells
• Lattice Quantum Geometry Controlling 118 K Multigap Superconductivity in Heavily Overdoped CuBa2Ca3Cu4O10+d
• The Upper Critical Field Hc2 in Advanced Superconductors with Anisotropic Energy Spectrum
• Josephson coupling in Lanthanum-based cuprates superlattices