Magnetic field-enhanced spin freezing in YBa2Cu3O6.45 at the verge of the competition between superconductivity and charge order

Abstract

Using 63Cu NMR, we establish that the enhancement of spin order by a magnetic field H in YBa2Cu3O6.45 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 Hc2. 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. 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.

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Cited by in corpus (23)

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• Competing charge, spin, and superconducting orders in underdoped YBa2Cu3Oy
• Angular fluctuations of a multi-component order describe the pseudogap regime of the cuprate superconductors
• Quantum Oscillations in Hole-Doped Cuprates
• Hidden magnetism at the pseudogap critical point of a high temperature superconductor
• Pressure-enhanced spin-density-wave transition in double-layer nickelate $L{a}_{3}N{i}_2{O}_{7-\delta }$
• Mean field theory of competing orders in metals with antiferromagnetic exchange interactions
• Coexistence of cluster spin glass and superconductivity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ for $0.060\le x\le 0.071$
• Charge orders, magnetism and pairings in the cuprate superconductors
• Progressive slowing down of spin fluctuations in underdoped LaFeAsO${}_{1-x}$F${}_x$
• Lattice dynamical signature of charge density wave formation in underdoped YBa2Cu3O6+x
• Nuclear Magnetic Resonance in High Magnetic Field: Application to Condensed Matter Physics
• Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa${}_2$CuO${}_{4+\delta }$
• Evidence of unconventional low-frequency dynamics in the normal phase of Ba(Fe1-xRhx)2As2 iron-based supercondutors
• Anharmonic theory of superconductivity and its applications to emerging quantum materials
• Glass-induced enhancement of superconducting $T_c$: Pairing via dissipative mediators
• Competition between spin ordering and superconductivity near the pseudogap boundary in La2-xSrxCuO4: insights from NMR
• Cu-NMR study of oxygen disorder in ortho-II YBa2Cu3Oy
• Angle Resolved Photo-Emission Spectroscopy signature of the Resonant Excitonic State
• Emergent spin-glass state in the doped Hund's metal CsFe2As2
• Stripe Antiferromagnetism and Disorder in the Mott Insulator NaFe${}_{1-x}$Cu${}_x$As ($x\lesssim 0.5$)
• Spin-stripe order tied to the pseudogap phase in La1.8-xEu0.2SrxCuO4
• Critical spin fluctuations across the superconducting dome in La${}_{2-x}$Sr${}_x$CuO${}_4$