Magnetic-Field Tuning of Light-Induced Superconductivity in Striped La${}_{2-x}$Ba${}_x$CuO${}_4$

Abstract

Optical excitation of stripe-ordered La${}_{2-x}$Ba${}_x$CuO${}_4$ has been shown to transiently enhance superconducting tunneling between the CuO${}_2$ planes. This effect was revealed by a blue-shift, or by the appearance of a Josephson Plasma Resonance in the terahertz-frequency optical properties. Here, we show that this photo-induced state can be strengthened by the application of high external magnetic fields oriented along the c-axis. For a 7-Tesla field, we observe up to a ten-fold enhancement in the transient interlayer phase correlation length, accompanied by a two-fold increase in the relaxation time of the photo-induced state. These observations are highly surprising, since static magnetic fields suppress interlayer Josephson tunneling and stabilize stripe order at equilibrium. We interpret our data as an indication that optically-enhanced interlayer coupling in La${}_{2-x}$Ba${}_x$CuO${}_4$ does not originate from a simple optical melting of stripes, as previously hypothesized. Rather, we speculate that the photo-induced state may emerge from activated tunneling between optically-excited stripes in adjacent planes.

arXiv comment35 pages, 13 figures

References in corpus (33)

• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc
• Magnetic-field-induced charge-stripe order in the high temperature superconductor YBa2Cu3Oy
• Charge order driven by Fermi-arc instability in Bi2201
• Powerlaw optical conductivity with a constant phase angle in high Tc superconductors
• Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La(1.875)Ba(0.125)CuO(4)
• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Detection of a Cooper-Pair Density Wave in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Dynamical layer decoupling in a stripe-ordered, high T_c superconductor
• Optically induced coherent transport far above Tc in underdoped YBa2Cu3O6+x
• Stripe order in superconducting La(2-x)Ba(x)CuO(4) for 0.095 <= x <= 0.155
• Nonlinear light-matter interaction at terahertz frequencies
• Appearance of fluctuating stripes at the onset of the pseudogap in the high-Tc Superconductor Bi2Sr2CaCu2O8+x
• Temporal correlations of superconductivity above the transition temperature in La${}_{2-x}$Sr${}_x$CuO${}_4$ probed by terahertz spectroscopy
• Fluctuating charge density waves in a cuprate superconductor
• Optically induced superconductivity in striped La2-xBaxCuO4 by polarization-selective excitation in the near infrared
• Transverse optical plasmons in layered superconductors
• Pressure tuning of light-induced superconductivity in K3C60
• Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
• Probing optically silent superfluid stripes in cuprates
• Spontaneous symmetry breaking by charge stripes in the high-pressure phase of superconducting La(1.875)Ba(0.125)CuO(4)
• Enhanced charge stripe order of superconducting La(2-x)Ba(x)CuO(4) in a magnetic field
• Terahertz time-domain spectroscopy of transient metallic and superconducting states
• Wavelength dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4
• Towards a two-dimensional superconducting state of La${}_{2-x}$Sr${}_x$CuO${}_2$ in a moderate external magnetic field
• Determination of the optical properties of La{2-x}Ba{x}CuO{4} for several dopings, including the anomalous x=1/8 phase
• Two distinct kinetic regimes for the relaxation of light-induced superconductivity in La${}_{1.675}$Eu${}_{0.2}$Sr${}_{0.125}$CuO${}_4$
• Restoring Interlayer Josephson Coupling in La_{1.885}Ba_{0.115}CuO_4 by Charge Transfer Melting of Stripe Order
• Evolution of superconducting correlations within magnetic-field-decoupled CuO(2) layers of La(1.905)Ba(0.095)CuO(4)
• Light-induced new collective modes in La${}_{1.905}$Ba${}_{0.095}$CuO${}_4$ superconductor
• Magnetic field dependence of charge stripe order in La2-xBaxCuO4 (x~1/8)
• Comment on "Terahertz time-domain spectroscopy of transient metallic and superconducting states" (arXiv:1506.06758)

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