Lattice Quantum Geometry Controlling 118 K Multigap Superconductivity in Heavily Overdoped CuBa2Ca3Cu4O10+d
arXiv:2504.13796 · doi:10.1103/9x2k-rc98
Abstract
Synchrotron X-ray diffraction has been used to study the thermal structure evolution in CuBa2Ca3Cu4O10+d (Cu1234), a superconductor which exhibits a high critical temperature (Tc 118 K), high critical current density and large upper critical magnetic field. The lattice geometry at nanoscale of this cuprate belongs to the class of natural heterostructures at atomic limit like the artificial high Tc superlattices made of interface space charge in Mott insulator units intercalated by metal units. Temperature-dependent lattice parameters reveal a distinct structural transition at TC characterized by a drop of the c-axis and in plane Cu-O negative thermal expansion below TC. These results provide clear evidence of lattice reorganization associated with the chemical potential changes due to the opening of multiple superconducting gaps. Additionally, evidence for oxygen defects rearrangement is observed at temperatures above 200 K. We construct a phase diagram correlating temperature, the c/a axis ratio, and in plane Cu-O strain, identifying regions associated with gaps opening and oxygen rearrangement. These findings provide new insights into how lattice geometry control superconductivity to inform the material design of advanced nanoscale superconducting artificial quantum heterostructures.
16 pages, 4 figures
References in corpus (33)
- Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
- Inhomogeneity of charge density wave order and quenched disorder in a high Tc superconductor
- Scale-free structural organization of oxygen interstitials in La2CuO4+y
- Evolution and Control of Oxygen Order in a Cuprate Superconductor
- Resonant and crossover phenomena in a multiband superconductor tuning the chemical potential near a band edge
- Superconductivity in a unique type of copper oxide
- Universal versus Material-Dependent Two-Gap Behaviors in the High-Tc Cuprates: Angle-Resolved Photoemission Study of La2-xSrxCuO4
- What limits supercurrents in high temperature superconductors? A microscopic model of cuprate grain boundaries
- On the Possibility of New High Tc Superconductors by Producing metal Heterostructures as in the Cuprate Perovskites
- Enhanced superconducting gaps in the tri-layer high- cuprate BiSrCaCuO
- The effect of internal pressure on the tetragonal to monoclinic structural phase transition in ReOFeAs: the case of NdOFeAs
- Scanning micro X-ray diffraction unveils the distribution of oxygen chains nano-puddles in YBa2Cu3O6.33
- Structural phase transition and superlattice misfit strain of RFeAsO (R = La, Pr, Nd and Sm)
- Doped orbitally-ordered systems: another case of phase separation
- Ab initio molecular dynamics simulations of negative thermal expansion in ScF3: the effect of the supercell size
- Fermi surface reconstruction of superoxygenated LaCuO with ordered oxygen interstitials
- High-T cuprates: a story of two electron subsystems
- Multi-Band Superconductivity and the Steep Band -- Flat Band Scenario
- Shape resonances in multi-condensate granular superconductors formed by networks of nanoscale-striped puddles
- Spin-orbit coupling controlling the superconducting dome of artificial superlattices of quantum wells
- Anisotropic thermal expansion of p-Terphenyl: a self-assembled supramolecular array of poly-p-phenyl nanoribbons
- Electronic structure and two-band superconductivity in unconventional high- cuprates BaCuO
- High-Tc superconducting dome in artificial heterostructures made of nanoscale quantum building blocks
- Hidden, one-dimensional, strongly nested, and almost half-filled Fermi surface in BaCuO superconductors
- Two-band Conduction and Nesting Instabilities in Superconducting BaCuO: a First Principles Study
- Superconducting dome with - pairing symmetry in the heavily hole-overdoped copper-oxide planes
- Unprecedentedly large gap in HgBaCaCuO with the highest at ambient pressure
- Upper critical magnetic field and multiband superconductivity in artificial high-Tc superlattices of nano quantum wells
- Emergent Fano-Feshbach resonance in two-band superconductors with an incipient quasi-flat band: Enhanced critical temperature evading particle-hole fluctuations
- Scale free distribution of oxygen interstitials wires in optimum doped HgBaCuO
- Electronic structure of HgBaCuO with self-organized interstitial oxygen wires in the Hg spacer planes
- Josephson coupling in Lanthanum-based cuprates superlattices
- Band crossover and magnetic phase diagram of high-Tc superconducting compound Ba2CuO4-δ