Phason and Amplitudon in the Charge-Density-Wave Phase of One-Dimensional Charge Stripes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>La</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Sr</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>CuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>

Sugai, S.; Takayanagi, Y.; Hayamizu, N.

doi:10.1103/physrevlett.96.137003

Cited by 40 publications

(29 citation statements)

References 27 publications

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“…The phase mode has odd symmetry and cannot be observed by Raman scattering in systems with inversion symmetry. These considerations lead us to disagree with the interpretation of the low-energy response in terms of collective modes of the condensate (phase and amplitude mode) as proposed by Sugai and coworkers 75 . Actually, we found narrow modes only in disordered samples such as that at x = 0.08 [ Fig.…”

Section: Ordering Fluctuationsmentioning

confidence: 42%

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Electron interactions and charge ordering in CuO 2 compounds

Muschler

Prestel

Tassini

et al. 2010

Eur. Phys. J. Spec. Top.

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We present results of inelastic light scattering experiments on singlecrystalline La2−xSrxCuO4 in the doping range 0.00 ≤ x = p ≤ 0.30 and Tl2Ba2CuO 6+δ at p = 0.20 and p = 0.24. The main emphasis is placed on the response of electronic excitations in the antiferromagnetic phase, in the pseudogap range, in the superconducting state, and in the essentially normal metallic state at x ≥ 0.26, where no superconductivity could be observed. In most of the cases we compare B1g and B2g spectra which project out electronic properties close to (π, 0) and (π/2, π/2), respectively. In the channel of electron-hole excitations we find universal behavior in B2g symmetry as long as the material exhibits superconductivity at low temperature. In contrast, there is a strong doping dependence in B1g symmetry: (i) In the doping range 0.20 ≤ p ≤ 0.25 we observe rapid changes of shape and temperature dependence of the spectra. (ii) In La2−xSrxCuO4 new structures appear for x < 0.13 which are superposed on the electron-hole continuum. The temperature dependence as well as model calculations support an interpretation in terms of charge-ordering fluctuations. For x ≤ 0.05 the response from fluctuations disappears at B1g and appears at B2g symmetry in full agreement with the orientation change of stripes found by neutron scattering. While, with a grain of salt, the particle-hole continuum is universal for all cuprates the response from fluctuating charge order in the range 0.05 ≤ p < 0.16 is so far found only in La2−xSrxCuO4. We conclude that La2−xSrxCuO4 is close to static charge order and, for this reason, may have a suppressed Tc.

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Section: Ordering Fluctuationsmentioning

confidence: 42%

“…At high doping, the response exists in smaller temperature ranges than at low doping. Similarly to Sugai and coworkers 75 , we do not observe a coexistence of the fluctuation and the superconducting coherence peaks [compare Fig. 11 panels (e)-(g)].…”

Section: Ordering Fluctuationsmentioning

confidence: 52%

Electron interactions and charge ordering in CuO 2 compounds

Muschler

Prestel

Tassini

et al. 2010

Eur. Phys. J. Spec. Top.

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“…The origin of this discrepancy is unclear. In any case, we restrict ourselves to experimentally justified small values of m appropriate not only to BSCCO but also to La 2-x Sr x CuO 4-d [35]. the peaks remain conspicuous and preserve the BCS-like appearance.…”

Section: Results Of Calculationsmentioning

confidence: 99%

Analysis of the pseudogap-related structure in the tunnel spectra of superconducting Bi2Sr2CaCu2O8+δ revealed by break-junction technique

Ekino

Gabovich

Войтенко

2008

Low Temperature Physics

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Tunnel conductance G V( ) for break-junctions made of as-grown single-crystal Bi 2 Sr 2 CaCu 2 O 8+d samples with T c » -86 89 K was measured and clear-cut dip-hump structures (DHSs) were found in the range 80 120 -mV of the bias voltage V . The theory of tunneling in symmetric junctions between inhomogeneous charge-density-wave (CDW) superconductors, considered in the framework of the s-pairing model, has been developed. CDWs have been shown to be responsible for the appearance of the DHS in the tunnel current-voltage characteristics and properly describes experimental results.

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“…This suggests the γ feature, observed experimentally around 47.1 T and temperatures below 3 K (see Fig. 2) is a lock-in transition of the corresponding CDW from an incommensurate state to a "phase-locked" commensurate order [35,[39][40][41][42][43][44][45]53]. Lock-in transitions are characteristic fingerprints of CDW systems [54], where translational invariance of the charge modulation is lost with respect to the lattice [35].…”

mentioning

confidence: 99%

Charge Density Waves in Graphite: Towards the Magnetic Ultraquantum Limit

et al. 2017

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Graphite is a model system for the study of three-dimensional electrons and holes in the magnetic quantum limit, in which the charges are confined to the lowest Landau levels. We report magneto-transport measurements in pulsed magnetic fields up to 60 T, which resolve the collapse of two charge density wave states in two, electron and hole, Landau levels at 52.3 and 54.2 T, respectively. We report evidence for a commensurate charge density wave at 47.1 T in the electron Landau level, and discuss the likely nature of the density wave instabilities over the full field range. The theoretical modeling of our results predicts that the ultraquantum limit is entered above 73.5 T. This state is an insulator, and we discuss its correspondence to the "metallic" state reported earlier. We propose that this (interaction-induced) insulating phase supports surface states that carry no charge or spin within the planes, but does, however, support charge transport out of plane.

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Phason and Amplitudon in the Charge-Density-Wave Phase of One-Dimensional Charge Stripes inLa2−xSrxCuO4

Cited by 40 publications

References 27 publications

Electron interactions and charge ordering in CuO 2 compounds

Electron interactions and charge ordering in CuO 2 compounds

Analysis of the pseudogap-related structure in the tunnel spectra of superconducting Bi2Sr2CaCu2O8+δ revealed by break-junction technique

Charge Density Waves in Graphite: Towards the Magnetic Ultraquantum Limit

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