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Defects of various types are ubiquitous in low dimensional quantum materials, including superconductors, which can occur in an uncontrolled way during the fabrication process, or can be introduced intentionally in a controlled environment to probe various intriguing and useful properties they offer [1-7]. In my talk, I'll discuss various scenarios of materials with such properties based on my recent works [8-10], and how they address several contemporary experimental as well as theoretical studies [2,3-6,11]. If time permits, I'll also discuss some of the findings from my ongoing work on driven quantum systems with emergent topological phases.References:
[1] Defects in correlated metals and superconductors;
Alloul et al; Rev. Mod. Phys. 81, 45 (2009)
[2] Electronic nematicity above the structural and superconducting transition in BaFe2(As1-xPx)2;
Kasahara et al, Nature volume 486, pages 382-385 (2012)
[3] Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor;
Nadj-Perge et al; Science 346, 602 (2014)
[4] Spiral magnetic order and topological superconductivity in a chain of magnetic adatoms on a two-dimensional
superconductor;
Christensen et al; Phys. Rev. B 94, 144509 (2016)
[5] Atomic line defects and zero-energy end states in monolayer Fe(Te,Se) high-temperature superconductors;
Chen et al; Nature Physics volume 16, pages 536-540 (2020)
[6] Atomic Line Defects and Topological Superconductivity in Unconventional Superconductors;
Zhang et al; Phys. Rev. X 11, 011041-(2021)
[7] From Mott to not: Effect of out-of-plane dopants on superfluid density of overdoped cuprates;
Izdemir et al; Phys. Rev. B 106, 184510 (2022)
[8] Magnetic anisotropy from linear defect structures in correlated electron systems;
Pal et al; Phys. Rev. B 103, 245132 (2021)
[9] Topological superconductivity driven by correlations and linear defects in multiband superconductors;
Pal et al; Phys. Rev. B 107, 134503 (2023)
[10] Simulating superconducting properties of overdoped cuprates: The role of inhomogeneity;
Pal et al; Phys. Rev. B 107, 144501 (2023)
[11] Superconductor-to-metal transition in overdoped cuprates;
Li et al; npj Quantum Materials volume 6, Article number: 36 (2021) |