Magnetic-field-enhanced spin freezing on the verge of charge ordering in YBa2Cu3O6.45

2013/06/26 by T. Wu, Tao Wu, H. Mayaffre +10 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Charge ordering #Condensed matter physics #Cuprate #Doping #Field (mathematics) #Magnetic field #Magnetic properties of thin films #Materials science #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Spin (aerodynamics) #Superconductivity #Thermodynamics #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.88.014511

published as Phys. Rev. B 88, 014511 (2013)

arxiv created 2013/06/26 · openalex publication_date 2013/07/12 · arxiv updated 2013/09/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Using ⁶³Cu NMR, we establish that the enhancement of spin order by a magnetic field H in YBa₂Cu₃O_6.45 arises from a competition with superconductivity because the effect occurs for H perpendicular, but not parallel, to the CuO₂ planes, and it persists up to field values comparable to H_c2. We also find that the spin freezing has a glassy nature and that the frozen state onsets at a temperature which is independent of the magnitude of H. These results, together with the presence of a competing charge-ordering instability at nearby doping levels, are strikingly parallel to those previously obtained in La-214. This suggests a universal interpretation of magnetic field effects in underdoped cuprates where the enhancement of spin order by the field may not be the primary phenomenon but rather a byproduct of the competition between superconductivity and charge order. We also observe that low-energy spin fluctuations are manifested up to relatively high temperatures where they partially mask the signature of the pseudogap in 1/T₁ data of planar Cu sites.

Citations

• Spin dynamics in the low-temperature tetragonal phase of≅18doped single crystalLa1.67Eu0.2Sr0.13CuO4
• Inhomogeneous Low Frequency Spin Dynamics inLa1.65Eu0.2Sr0.15CuO4
• Competing orders in a magnetic field: Spin and charge order in the cuprate superconductors
• Electronic Liquid Crystal State in the High-Temperature Superconductor YBa 2 Cu 3 O 6.45
• Theory of reduced singlet pairing without the underlying state of charge stripes in the high-temperature superconductorYBa2Cu3O6.45
• Large Magnetic Field-Induced Spectral Weight Enhancement of High-Energy Spin Excitations inLa1.88Sr0.12CuO4
• Effective action, magnetic excitations, and quantum fluctuations in lightly doped single-layer cuprates
• Disorder, metal-insulator crossover and phase diagram in high-T c cuprates
• Spin dynamics and ordering of a cuprate stripe antiferromagnet
• Lattice symmetry breaking in cuprate superconductors: stripes, nematics, and superconductivity
• Spin-Charge Interplay in Electronic Liquid Crystals: Fluctuating Spin Stripe Driven by Charge Nematic Ordering
• Spin dynamics near the critical doping in weakly superconducting underdopedYBa2Cu3O6.35(Tc=18<mml:mspace width="0.3em"/>K)

Cited by

• Progressive slowing down of spin fluctuations in underdoped LaFeAsO1−xFx

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• Discovery of slow magnetic fluctuations and critical slowing down in the pseudogap phase of YBa₂Cu₃O_y
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• Spin dynamics near the critical doping in weakly superconducting underdopedYBa2Cu3O6.35(Tc=18<mml:mspace width="0.3em"/>K)
• Magnetic-field induced superconductor-antiferromagnet transition in lightly doped RBa₂Cu₃O_6+x (R = Lu, Y) crystals