Cu nuclear magnetic resonance study of charge and spin stripe order in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$

Abstract

We present a Cu nuclear magnetic/quadrupole resonance study of the charge stripe ordered phase of LBCO, with detection of previously unobserved ('wiped-out') signal. We show that spin-spin and spin-lattice relaxation rates are strongly enhanced in the charge ordered phase, explaining the apparent signal decrease in earlier investigations. The enhancement is caused by magnetic, rather than charge fluctuations, conclusively confirming the long-suspected assumption that spin fluctuations are responsible for the wipeout effect. Observation of the full Cu signal enables insight into the spin and charge dynamics of the stripe-ordered phase, and measurements in external magnetic fields provide information on the nature and suppression of spin fluctuations associated with charge order. We find glassy spin dynamics, in agreement with previous work, and incommensurate static charge order with charge modulation amplitude similar to other cuprate compounds, suggesting that the amplitude of charge stripes is universal in the cuprates.

arXiv comment7 pages, 5 figures

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Cited by in corpus (7)

• ${}^{139}$La NMR investigation of the interplay between the lattice, charge, and spin dynamics in charge ordered high $T_c$ cuprate La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$
• Revisiting ${}^{63}$Cu NMR evidence for charge order in superconducting La${}_{1.885}$Sr${}_{0.115}$CuO${}_4$
• Static Charge Density Wave Order in the Superconducting State of La2-xBaxCuO4
• A unified phase diagram of F-doped LaFeAsO by means of NMR and NQR parameters
• 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
• Mapping out the spin fluctuations in Co-doped LaFeAsO single crystals by NMR
• Revisiting the ${}^{63}$Cu NMR signature of charge order in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$