Spin Susceptibility in Underdoped Cuprates: Insights from a Stripe-Ordered Crystal

Abstract

We report a detailed study of the temperature and magnetic-field dependence of the spin susceptibility for a single crystal of La(1.875)Ba(0.125)CuO(4). From a quantitative analysis, we find that the temperature-dependent anisotropy of the susceptibility, observed in both the paramagnetic and stripe-ordered phases, directly indicates that localized Cu moments dominate the magnetic response. A field-induced spin-flop transition provides further corroboration for the role of local moments. Contrary to previous analyses of data from polycrystalline samples, we find that a commonly-assumed isotropic and temperature-independent contribution from free carriers, if present, must be quite small. Our conclusion is strengthened by extending the quantitative analysis to include crystals of La(2-x)Ba(x)CuO(4) with x=0.095 and 0.155. On the basis of our results, we present a revised interpretation of the temperature and doping dependence of the spin susceptibility in La(2-x)(Sr,Ba)(x)CuO(4).

9 pages, 9 figures; presentation greatly expanded, further analysis details included

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• Testing the itinerancy of spin dynamics in superconducting Bi2212
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• Magneto-optical signatures of a cascade of transitions in La${}_2-x$Ba${}_x$CuO${}_4$
• Determination of the optical properties of La{2-x}Ba{x}CuO{4} for several dopings, including the anomalous x=1/8 phase
• Neutron scattering study of spin ordering and stripe pinning in superconducting La${}_{1.93}$Sr${}_{0.07}$CuO${}_4$
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• Unusual Nernst effect suggestive of time-reversal violation in the striped cuprate La${}_{2-x}$Ba${}_x$CuO${}_4$
• Strongly-overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$: Evidence for Josephson-coupled grains of strongly-correlated superconductor
• Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates
• Stripes and Superconductivity in Cuprates
• Nematic and spin-charge orders driven by hole-doping a charge-transfer insulator
• Probing the connections between superconductivity, stripe order, and structure in La1.905Ba0.095Cu1-yZnyO4
• Signatures of a pair density wave at high magnetic fields in cuprates with charge and spin orders
• Evolution of superconducting correlations within magnetic-field-decoupled CuO(2) layers of La(1.905)Ba(0.095)CuO(4)
• Ubiquitous Charge Order Correlations in High-Temperature Superconducting Cuprates
• Charge order and low frequency spin dynamics in lanthanum cuprates revealed by Nuclear Magnetic Resonance
• Magnetic field induced anisotropy of ${}^{139}\mathrm{La}$ spin-lattice relaxation rates in stripe ordered ${\mathrm{La}}_{1.875}{\mathrm{Ba}}_{0.125}{\mathrm{CuO}}_4$
• From non-metal to strange metal at the stripe-percolation transition in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Exploring intertwined orders in cuprate superconductors
• Spin Zeros and the Origin of Fermi Surface Reconstruction in the Cuprates
• Transport Properties of Stripe-Ordered High Tc Cuprates
• Uniaxial stress study of spin and charge stripes in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ by ${}^{139}$La NMR and ${}^{63}$Cu NQR
• Spin canting and lattice symmetry in La${}_2$CuO${}_4$
• Multiple Broken Symmetries in Striped La${}_{2-x}$Ba${}_x$CuO${}_4$ detected by the Field Symmetric Nernst Effect
• Electronic interlayer coupling in the LTT phase of La1.79Eu0.2Sr0.01CuO4
• Gapless spin excitations in superconducting La${}_{2-x}$Ca${}_{1+x}$Cu${}_2$O${}_6$ with $T_c$ up to 55 K
• Magnetic susceptibility of optimally doped HgBa${}_2$CuO${}_{4+\delta }$
• Concerning two-gap ARPES data, the pseudogap, 2-q striping and magnetc circular dichroism from the negative-U HTSC perspective