Magnetic penetration depth in the presence of a spin-density wave in multiband superconductors at zero temperature

Abstract

We present a theoretical description of the London penetration depth of a multi-band superconductor in the case when both superconducting and spin-density wave orders coexist. We focus on clean systems and zero temperature to emphasize the effect of the two competing orders. Our calculation shows that the supefluid density closely follows the evolution of the superconducting order parameter as doping is increased, saturating to a BCS value in the pure superconducting state. Furthermore, we predict a strong anisotropic in-pane penetration depth induced by the spin-density wave order.

arXiv comment7 pages, 4 figures

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Cited by in corpus (7)

• Enhancement of the London penetration depth in pnictides at the onset of SDW order under superconducting dome
• How many quantum phase transitions exist inside the superconducting dome of the iron pnictides?
• Local characterization of superconductivity in BaFe2(As1-xPx)2
• Odd-frequency superconductivity and Meissner effect in the doped topological insulator Bi${}_2$Se${}_3$
• Competition between superconductivity and magnetic/nematic order as a source of anisotropic superconducting gap in underdoped Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Magnetic penetration depth in disordered iron-based superconductors
• Anomalous thermodynamic properties of quantum critical superconductors