Disentangling Intertwined Quantum States in a Prototypical Cuprate Superconductor

Choi, Jaewon; Wang, Q.; Jöhr, S.; Christensen, Niels Bech; Küspert, Julia; Bücher, David; Biscette, D.; Hücker, M.; Kurosawa, T.; Momono, N.; Oda, Masahiro; Ivashko, Oleh; Zimmermann, M. v.; Janoschek, M.; Chang, J.

doi:10.48550/arxiv.2009.06967

Cited by 5 publications

(12 citation statements)

References 21 publications

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“…Application of external strain along the copper-oxygen bond direction promotes the B 1g symmetry breaking terms with magnitude h . For h h ⊥ , detwinned stripe order pinned to the crystal lattice is expected and recently realized experimentally 35 . With the modest uniaxial pressure applied in this study, we deem that h ≤ h ⊥ .…”

Section: Discussionmentioning

confidence: 76%

“…2), which is at least an order of magnitude weaker than the maximum strain applied in ref. 35 . Applying Poisson's ratio 35,36 , we estimate the upper bound of the in-plane compressive strain − b = (b − b 0 )/b 0 applied to be b 0.04%.…”

Section: Resultsmentioning

confidence: 99%

“…35 . Applying Poisson's ratio 35,36 , we estimate the upper bound of the in-plane compressive strain − b = (b − b 0 )/b 0 applied to be b 0.04%. Data in our work were obtained under three strain conditions with b,0 = 0 and 0 < b,1 < b,2 < 0.04%.…”

Section: Resultsmentioning

confidence: 99%

“…The fact that δ remains essentially unchanged upon application of modest uniaxial pressure indicates that the disorder potential is weakly dependent on pressure. Application of larger uniaxial pressure is known 35 to drive δ → 1/4. In the quantum lattice string model, static stripes melt through a transverse kink proliferation 20,28 , characterized by the transverse fluctuation magnitude 13 .…”

Section: Discussionmentioning

confidence: 99%

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Uniaxial Pressure Induced Stripe Order Rotation in La$_{1.88}$Sr$_{0.12}$CuO$_4$

Wang,

von Arx,

Mazzone

et al. 2022

Preprint

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Static stripe order is detrimental to superconductivity. Yet, it has been proposed that transverse stripe fluctuations may enhance the interstripe Josephson coupling and thus promote superconductivity. Direct experimental studies of stripe dynamics, however, remain difficult. From a strong-coupling perspective, transverse stripe fluctuations are realized in the form of dynamic "kinks"-sideways shifting stripe sections. Here, we show how modest uniaxial pressure tuning reorganizes directional kink alignment. Our starting point is La 1.88 Sr 0.12 CuO 4 , where transverse kink ordering results in a rotation of stripe order away from the crystal axis. Application of mild uniaxial pressure changes the ordering pattern and pins the stripe order to the crystal axis. This reordering occurs at a much weaker pressure than that to detwin the stripe domains and suggests a rather weak transverse stripe stiffness. Weak spatial stiffness and transverse quantum fluctuations are likely key prerequisites for stripes to coexist with superconductivity.

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Section: Discussionmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Uniaxial Pressure Induced Stripe Order Rotation in La$_{1.88}$Sr$_{0.12}$CuO$_4$

Wang,

von Arx,

Mazzone

et al. 2022

Preprint

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“…It is interesting to note that the stripe order of Labased cuprates, while often considered as a distinct type of CDW, is in fact not fundamentally different even at a simple phenomenological level. The CDW is unidirectional, though forming orthogonal domains in the absence of low temperature structural distortion [74]. q CDW is incommensurate, even for p = 0.125 = 1/8 doping where commensurability effects have been thought to be most relevant.…”

Section: Discussionmentioning

confidence: 99%

Locally commensurate charge-density wave with three-unit-cell periodicity in YBCO

Vinograd,

Zhou,

Hirata

et al. 2021

Preprint

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In order to identify the mechanism responsible for the formation of charge-density waves (CDW) in cuprate superconductors, it is important to understand which aspects of the CDW's microscopic structure are generic and which are material-dependent. Here, we show that, at the local scale probed by NMR, long-range CDW order in YBa2Cu3Oy is unidirectional with a commensurate period of three unit cells (λ = 3b), implying that the incommensurability found in X-ray scattering is ensured by phase slips (discommensurations). Furthermore, NMR spectra reveal a predominant oxygen character of the CDW with an out-of-phase relationship between certain lattice sites but no specific signature of a secondary CDW with λ = 6b associated with a putative pair-density wave. These results shed light on universal aspects of the cuprate CDW. In particular, its spatial profile appears to generically result from the interplay between an incommensurate tendency at long length scales, possibly related to properties of the Fermi surface, and local commensuration effects, due to electron-electron interactions or lock-in to the lattice.

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Crystal symmetry of stripe-ordered La1.88Sr0.12CuO4

et al. 2022

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We present a combined x-ray and neutron diffraction study of the stripe-ordered superconductor La 1.88 Sr 0.12 CuO 4 . The average crystal structure is consistent with the orthorhombic Bmab space group as commonly reported in the literature. This structure, however, is not symmetry compatible with a second-order phase transition into the stripe order phase, and as we report here, numerous Bragg peaks forbidden in the Bmab space group are observed. We have studied and analyzed these Bmab-forbidden Bragg reflections. Fitting of the diffraction intensities yields monoclinic lattice distortions that are symmetry consistent with charge stripe order.

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Disentangling Intertwined Quantum States in a Prototypical Cuprate Superconductor

Cited by 5 publications

References 21 publications

Uniaxial Pressure Induced Stripe Order Rotation in La$_{1.88}$Sr$_{0.12}$CuO$_4$

Uniaxial Pressure Induced Stripe Order Rotation in La$_{1.88}$Sr$_{0.12}$CuO$_4$

Locally commensurate charge-density wave with three-unit-cell periodicity in YBCO

Crystal symmetry of stripe-ordered La1.88Sr0.12CuO4

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