High field charge order across the phase diagram of YBa2Cu3Oy

Laliberté, F.; Frachet, Mehdi; Benhabib, S.; Borgnic, Benjamin; Loew, T.; Porras, J.; Tacon, M. Le; Keimer, B.; Wiedmann, Steffen; Proust, Cyril; LeBoeuf, David

doi:10.1038/s41535-018-0084-5

Cited by 37 publications

(32 citation statements)

References 49 publications

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“…That the reduction of H c2 does not result from a particular fragility of the superconducting state when it coexists with long-range CDW order is consistent with the known depression of T c in zero-field [49] as well as with the observation that similar H c2 values, including the drop around p = 0.12, are deduced from a Gaussian-fluctuation analysis of paraconductivity data in zero field [1,16]. Reconstruction of the Fermi surface by the short-range, rather than by the longrange, CDW order agrees with a number of works [50][51][52][53][54][55][56][57][58][59].…”

Section: Connecting With Pseudogap and Cdw Phenomenasupporting

confidence: 71%

Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Zhou

Hirata

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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The value of the upper critical field Hc2, a fundamental characteristic of the superconducting state, has been subject to strong controversy in high-Tc copper-oxides. Since the issue has been tackled almost exclusively by macroscopic techniques so far, there is a clear need for local-probe measurements. Here, we use 17 O NMR to measure the spin susceptibility χspin of the CuO2 planes at low temperature in charge ordered YBa2Cu3Oy. We find that χspin increases (most likely linearly) with magnetic field H and saturates above field values ranging from 20 to 40 T. This result is consistent with Hc2 values claimed by G. Grissonnanche et al. [Nat. Commun. 5, 3280 (2014)] and with the interpretation that the charge-density-wave (CDW) reduces Hc2 in underdoped YBa2Cu3Oy. Furthermore, the absence of marked deviation in χspin(H) at the onset of long-range CDW order indicates that this Hc2 reduction and the Fermi-surface reconstruction are primarily rooted in the short-range CDW order already present in zero field, not in the field-induced long-range CDW order. Above Hc2, the relatively low values of χspin at T = 2 K show that the pseudogap is a ground-state property, independent of the superconducting gap.

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Section: Connecting With Pseudogap and Cdw Phenomenasupporting

confidence: 71%

Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Zhou

Hirata

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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“…Apart from NMR, the X-ray measurements [29][30][31] in high magnetic field also establish the long-range nature of CDM. This long-range CDM order was further found in sound velocity measurement, 32,33 which is suggestive of a thermodynamic phase transition. A complex competition between the SC and the charge order (CO) has been indicated in various experiments.…”

Section: A Translational Symmetry Breaking Orderssupporting

confidence: 54%

“…This also indicates that the order is a preemptive order emerging at a higher temperature T 0 [see Eq. (33)] than T f luc .…”

Section: Second Order Phase Transitionmentioning

confidence: 99%

Incipient loop-current order in the underdoped cuprate superconductors

2019

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There are growing experimental evidence which indicate discrete symmetry breaking like parity, time-reversal and C4 lattice rotation in the pseudo-gap state of the under-doped copper-oxide based (cuprate) superconductors. The discrete symmetry breaking manifests a true phase transition to an ordered state. A detailed thermodynamic understanding of these orders can answer various puzzles related to the nature of the transition at the pseudogap temperature T * . In this work, we investigate thermodynamic signature of parity and time-reversal symmetry breaking within a theory of two kinds of instabilities in particle-particle (p-p) and particle-hole (p-h) channels in the pseudo-gap state. The p-p and p-h instabilities correspond to superconductivity (SC) and bond-excitonic (BDW) orders respectively. The BDW can generate both modulating charge and current densities. This scenario leads to an intricate competition between the ubiquitous charge density wave and SC, which is prominent in various cuprates in the under-doped regime. We show that a mean-field ground state of coexisting BDW and SC can spontaneously break the parity and time-reversal symmetry below superconducting critical temperature, provided the BDW itself breaks the time-reversal and parity. We describe that an auxiliary order parameter, referred as magneto-electric loop current (MELC) order, can be constructed from a composite of BDW and SC fields. We demonstrate that the MELC order spontaneously breaks parity and time-reversal symmetry and emerges due to a preemptive phase transition at a higher temperature before the primary orders set in.

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“…For Y123, extensive high-field measurements have found both a unidirectional and bidirectional CDW (43)(44)(45). The correlation length, ξ CDW , approaches a few hundred Angstroms (43,44) in high-magnetic fields and thermodynamic signatures of a second order phase transition (23,46) have also been observed. It is thus likely that either a unidirectional (42,47) and/or bidirectional (41,46,48) CDW is responsible for Fermi-surface reconstruction in Y123.…”

Section: Discussionmentioning

confidence: 99%

Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa ₂ CuO _{4+
δ}

Chan

McDonald

Ramshaw

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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High magnetic fields have revealed a surprisingly small Fermisurface in underdoped cuprates, possibly resulting from Fermisurface reconstruction due to an order parameter that breaks translational symmetry of the crystal lattice. A crucial issue concerns the doping extent of this state and its relationship to the principal pseudogap and superconducting phases. We employ pulsed magnetic field measurements on the cuprate HgBa 2 CuO 4+δ to identify signatures of Fermi surface reconstruction from a sign change of the Hall effect and a peak in the temperature-dependent planar resistivity. We trace the termination of Fermi-surface reconstruction to two hole concentrations where the superconducting upper critical fields are found to be enhanced. One of these points is associated with the pseudogap end-point near optimal doping. These results connect the Fermi-surface reconstruction to both superconductivity and the pseudogap phenomena.

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High field charge order across the phase diagram of YBa2Cu3Oy

Cited by 37 publications

References 49 publications

Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Incipient loop-current order in the underdoped cuprate superconductors

Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa ₂ CuO _{4+
δ}

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High field charge order across the phase diagram of YBa2Cu3Oy

Cited by 37 publications

References 49 publications

Spin susceptibility of charge-ordered YBa 2 Cu 3 O y across the upper critical field

Spin susceptibility of charge-ordered YBa 2 Cu 3 O y across the upper critical field

Incipient loop-current order in the underdoped cuprate superconductors

Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa 2 CuO 4+ δ

Contact Info

Product

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Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Spin susceptibility of charge-ordered YBa ₂ Cu ₃ O _y across the upper critical field

Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa ₂ CuO _{4+
δ}