Controllable Rashba spin-orbit interaction in artificially engineered superlattices involving the heavy-fermion superconductor CeCoIn5

Abstract

By using a molecular beam epitaxy technique, we fabricate a new type of superconducting superlattices with controlled atomic layer thicknesses of alternating blocks between heavy fermion superconductor CeCoIn_5, which exhibits a strong Pauli pair-breaking effect, and nonmagnetic metal YbCoIn_5. The introduction of the thickness modulation of YbCoIn_5 block layers breaks the inversion symmetry centered at the superconducting block of CeCoIn_5. This configuration leads to dramatic changes in the temperature and angular dependence of the upper critical field, which can be understood by considering the effect of the Rashba spin-orbit interaction arising from the inversion symmetry breaking and the associated weakening of the Pauli pair-breaking effect. Since the degree of thickness modulation is a design feature of this type of superlattices, the Rashba interaction and the nature of pair-breaking are largely tunable in these modulated superlattices with strong spin-orbit coupling.

5 pages, 4 figures, to be published in Phys. Rev. Lett

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• Topological Crystalline Superconductivity in Locally Non-centrosymmetric Multilayer Superconductors
• Laser-induced topological superconductivity in cuprate thin films
• From Kondo Lattices to Kondo Superlattices
• Majorana flat bands, chiral Majorana edge states, and unidirectional Majorana edge states in noncentrosymmetric superconductors
• Paramagnetically induced gapful topological superconductors
• Controllable spin-orbit coupling and its influence on the upper critical field in the chemically doped quasi-one-dimensional Nb${}_2$PdS${}_5$ superconductor
• Emergent exotic superconductivity in artificially-engineered tricolor Kondo superlattices
• Fate of Majorana modes in ${\mathrm{CeCoIn}}_5$/${\mathrm{YbCoIn}}_5$ superlattices -a test bed for reduction of topological classification-
• Mechanism for unconventional superconductivity in the hole-doped Rashba-Hubbard model
• Rashba spin-orbit coupling in the square lattice Hubbard model: A truncated-unity functional renormalization group study
• Spin-orbit coupled superconductivity: Rashba-Hubbard model on the square lattice
• Anisotropic two-gap superconductivity and the absence of a Pauli paramagnetic limit in single-crystalline LaO${}_{0.5}$F${}_{0.5}$BiS${}_2$
• Nearly isotropic superconductivity in layered Weyl semimetal WTe${}_2$ at 98.5 kbar
• Orbitally limited pair-density wave phase of multilayer superconductors
• Quantum oscillation signatures of nodal spin-orbit coupling in underdoped bilayer high Tc cuprates
• Theory of proximity effect in two-dimensional unconventional superconductor with Rashba spin-orbit interaction
• Topological D+p-wave superconductivity in Rashba systems
• Upward curvature of the upper critical field and the V-shaped pressure dependence of $T_c$ in the noncentrosymmetric superconductor PbTaSe${}_2$
• Tuning of magnetic quantum criticality in artificial Kondo superlattice CeRhIn5/YbRhIn5
• Angular dependence of the upper critical field in the high-pressure $1T^{\prime }$ phase of MoTe${}_2$
• The interface between heavy fermions and normal electrons investigated by spatially-resolved nuclear magnetic resonance
• Strongly parity-mixed superconductivity in Rashba-Hubbard model
• Robust two-dimensional superconductivity and vortex system in Bi2Te3/FeTe heterostructures
• Controlling unconventional superconductivity in artificially engineered $f$-electron Kondo superlattices
• Ferromagnetic fluctuations in the Rashba-Hubbard model
• Topological d-wave superconductivity in two dimensions
• Topological Ising pairing states in monolayer and trilayer TaS${}_2$
• Impact of the Rashba Spin Orbit Coupling on $f$-electron Materials
• Proximity-driven ferromagnetism and superconductivity in the triangular Rashba-Hubbard model
• Stripe order and diode effect in two-dimensional Rashba superconductors
• Direct Evidence for the Existence of Heavy Quasiparticles in the Magnetically Ordered Phase of CeRhIn${}_5$
• Evidence for a finite-momentum Cooper pair in tricolor $d$-wave superconducting superlattices
• Electron Correlation Effects in Non-Centrosymmetric Metals in the Weak Coupling Regime
• Interaction-driven first-order and higher-order topological superconductivity
• Pair-breaking in superconductors with strong spin-orbit coupling
• Epitaxial growth and electronic properties of mixed valence YbAl3 thin films
• Magnetism in f electron superlattices
• Coupling between heavy fermion superconductor CeCoIn${}_5$ and antiferromagnetic metal CeIn${}_3$ through the atomic interface
• Vortex Core Structure in Multilayered Rashba Superconductors
• Charge Carrier Dynamics of the Heavy Fermion Metal CeCoIn${}_5$ Probed by THz Spectroscopy
• Magnetic and superconducting properties of the heavy-fermion CeCoIn5 epitaxial film probed by nuclear quadrupole resonance
• Superconducting critical temperature and dimensionality tuning of RbV${}_3$Sb${}_5$ via biaxial strain
• Nonlinear response induced by Ferromagnetism in a Noncentrosymmetric Kondo Lattice system
• Excitation spectra and wave functions of quasiparticle bound states in bilayer Rashba superconductors
• Gap Anisotropy in Layered Superconductors Due to Rashba and Dresselhaus Spin-Orbit Interactions
• Extremely high upper critical field in BiCh${}_2$-based (Ch: S and Se) layered superconductor LaO${}_{0.5}$F${}_{0.5}$BiS${}_{2-x}$Se${}_x$ ($x$ = 0.22 and 0.69)