Strong antiferromagnetic proximity coupling in the heterostructure superconductor 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>VO</mml:mi><mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo><mml:mi>δ</mml:mi></mml:mrow></mml:msub><mml:mi>FeAs</mml:mi></mml:mrow></mml:math>

Ok, Jong Mok; Kwon, Chang Il; Valenzuela, Oscar E Ayala; Kim, Sunghun; McDonald, R. D.; Kim, Jeehoon; Choi, Eun Sang; Kang, Wonmo; Jo, Y. J.; Kim, C.; Moon, Eun-Gook; Kim, Y. K.; Kim, Jun Sung

doi:10.1103/physrevb.105.214505

Cited by 3 publications

(1 citation statement)

References 89 publications

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“…In superconducting ferro-and antiferromagnets, electrons can also couple to spin waves (magnons) [6][7][8][9][10][11][12]. Electron-magnon interactions are furthermore expected to mediate proximity-induced superconductivity across magnetic interfaces [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Disentangling electron-boson interactions on the surface of a familiar ferromagnet

Røst,

Mazzola,

Bakkelund

et al. 2024

Phys. Rev. B

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We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, disentangled, and quantified from the characteristic signatures they provide to the complex self-energy and the largely different binding energies at which they occur. The observed electron-magnon interactions exhibit a strong dependence on momentum and the electron energy band position in the bulk Brillouin zone. In contrast, electron-phonon interactions observed from the same bands appear to be relatively momentum and symmetry independent. Additionally, a moderately strong (λ > 0.5) electron-phonon interaction is distinguished from a near-parabolic spin majority band not crossing the Fermi level.

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Section: Introductionmentioning

confidence: 99%

Disentangling electron-boson interactions on the surface of a familiar ferromagnet

Røst,

Mazzola,

Bakkelund

et al. 2024

Phys. Rev. B

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Interplay of Cooper Pairs and Zero‐Energy Quasiparticles in a Gapless Superconductor

Lee,

Park,

Kim

et al. 2024

Advanced Materials

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The interplay between Cooper pairs and Bogoliubov‐de Gennes (BdG) quasiparticles is a topic of considerable interest in the quantum properties of solids, but its important ingredient, the sufficient amount of low‐energy quasiparticles to interact with Cooper pairs remains elusive in conventional superconductors. Here a gapless superconductor with coupled paramagnetic atomic layers is used to generate a significant amount of zero‐energy quasiparticles that Anderson‐localize and bifurcate into regions of high and low zero‐energy quasiparticle density of states. The enriched zero‐energy quasiparticles induce puddled superconductivity and Josephson vortices. This discovery not only advances the understanding of the mutual interaction of Cooper pairs and BdG quasiparticles but also opens a new avenue for exploring and controlling exotic quantum phenomena where superconductivity, disorder, and spin degrees of freedom are entangled.

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Topological superconductivity from unconventional band degeneracy with conventional pairing

Zhang,

Wu,

Fang

et al. 2024

Nat Commun

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Strong antiferromagnetic proximity coupling in the heterostructure superconductor Sr2VO3−δFeAs

Cited by 3 publications

References 89 publications

Disentangling electron-boson interactions on the surface of a familiar ferromagnet

Disentangling electron-boson interactions on the surface of a familiar ferromagnet

Interplay of Cooper Pairs and Zero‐Energy Quasiparticles in a Gapless Superconductor

Topological superconductivity from unconventional band degeneracy with conventional pairing

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