Observation of modulated magnetic long-range order in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>1.88</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.12</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CuO</mml:mi></mml:mrow><mml:mrow><m

Suzuki, Takao; Goto, Takayuki; Chiba, Kazuhisa; Shinoda, Tomoyuki; Fukase, Tetsuo; Kimura, Hiroyuki; Yamada, K.; Ohashi, Masayoshi; Yamaguchi, Yasuo

doi:10.1103/physrevb.57.r3229

Cited by 196 publications

(161 citation statements)

References 18 publications

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“…These findings indicate that small Zn doping induces quasistatic AF ordering at low temperature by shifting the spectral weight from inelastic region. These results mirrored the behaviors seen in samples in the SG region [3,4] Suzuki et al [18] have obtained evidence for incommensurate magnetic order at low temperature in LSCO with x = 0.12 by using a double-axis neutron diffractometer. Detailed elastic neutron-scattering measurements were carried out by Kimura et al [19,20].…”

Section: Overview Of the Elastic Magnetic Peaks In Lscosupporting

confidence: 62%

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Hirota

2001

Physica C: Superconductivity

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This paper reviews studies of the spatial modulation of spin in La2−xSrxCuO4 (LSCO) through neutron-scattering measurements of the elastic magnetic peaks, with emphasis on Zn-doped LSCO. The elastic incommensurate magnetic peaks can be categorized in two classes with respect to the temperature dependence. Nd-doped LSCO, La2CuO4+y and LSCO with x ∼ 1/8 exhibit an ordinary power law behavior. On the other hand, Zn-doped LSCO and LSCO with x = 0.02 − 0.07 show an exponential temperature dependence, and the correlation lengths stay short. This discrepancy can be attributed to the difference in the mechanism of pinning spin fluctuations. The former systems have pinning centers which is coherent to the lattice. In the latter, however, pinning centers are randomly scattered in the CuO2 planes, thus incoherent. The incoherent pinning model is discussed with referring to recent µSR studies.

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Section: Overview Of the Elastic Magnetic Peaks In Lscosupporting

confidence: 62%

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Hirota

2001

Physica C: Superconductivity

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“…17,19,21,[32][33][34] In Fig. 1(a), we show a constant energy scan obtained with the spectrometer set to energy transferhω = 0 meV.…”

Section: Resultsmentioning

confidence: 99%

“…Like YBCO, it displays only a small suppression of T c in the vicinity of p = x = 1/8, 16 but in this regime, incommensurate magnetism similar to that found for Nd-LSCO and LBCO coexists with superconductivity in the ground state. 17 To date, no evidence for incommensurate bulk charge order in LSCO has emerged. 18 This difference is believed to be an effect of a favorable potential for charge-stripe pinning in the specific low-temperature tetragonal (LTT) structure of Nd-LSCO and LBCO.…”

Section: Introductionmentioning

confidence: 99%

“…Within this picture, the low-temperature orthorhombic (LTO) structure of LSCO is not suitable for charge stripe order, but does allow incommensurate magnetism near x = 1/8. 17,19 The onset temperature of the incommensurate magnetism in LSCO depends on the experimental technique used to probe it. This implies that the electronic spins are gradually freezing rather than undergoing a regular thermodynamic phase transition.…”

Section: Introductionmentioning

confidence: 99%

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Glassy low-energy spin fluctuations and anisotropy gap in La1.88Sr0.12CuO4<

et al. 2013

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We present high-resolution triple-axis neutron scattering studies of the high-temperature superconductor La 1.88 Sr 0.12 CuO 4 (T c = 27 K). The temperature dependence of the low-energy incommensurate magnetic fluctuations reveals distinctly glassy features. The glassiness is confirmed by the difference between the ordering temperature T N T c inferred from elastic neutron scattering and the freezing temperature T f 11 K obtained from muon spin rotation studies. The magnetic field independence of the observed excitation spectrum as well as the observation of a partial suppression of magnetic spectral weight below 0.75 meV for temperatures smaller than T f , indicate that the stripe frozen state is capable of supporting a spin anisotropy gap, of a magnitude similar to that observed in the spin and charge stripe-ordered ground state of La 1.875 Ba 0.125 CuO 4 . The difference between T N and T f implies that the significant enhancement in a magnetic field of nominally elastic incommensurate scattering is caused by strictly inelastic scattering-at least in the temperature range between T f and T c -which is not resolved in the present experiment. Combining the results obtained from our study of La 1.88 Sr 0.12 CuO 4 with a critical reappraisal of published neutron scattering work on samples with chemical composition close to p = 0.12, where local probes indicate a sharp maximum in T f (p), we arrive at the view that the low-energy fluctuations are strongly dependent on composition in this regime, with anisotropy gaps dominating only sufficiently close to p = 0.12 and superconducting spin gaps dominating elsewhere.

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“…The same effect has been observed in La 1.875 Ba 0.125−x Sr x CuO 4 25 . Static magnetic stripe signatures exist in the insulating spin-glass phase of the Nd-free La 2−x Sr x CuO 4 with 0.02 ≤ x ≤ 0.05 26 and also in the underdoped superconducting region 0.05 < x ≤ 0.12 27,28 . However, near optimal doping and in the overdoped regime (0.12 < x ≤ 0.25), where quantum fluctuations are presumably larger, static ordering is averted and only dynamical stripe correlations have been found by inelastic neutron scattering experiments 29,30 .…”

Section: Introductionmentioning

confidence: 99%

Interacting electrons on a fluctuating string

Orgad

2004

Phys. Rev. B

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We consider the problem of interacting electrons constrained to move on a fluctuating onedimensional string. An effective low-energy theory for the electrons is derived by integrating out the string degrees of freedom to lowest order in the inverse of the string tension and mass density, which are assumed to be large. We obtain expressions for the tunneling density of states, the spectral function and the optical conductivity of the system. Possible connections with the phenomenology of the cuprate high temperature superconductors are discussed.

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Observation of modulated magnetic long-range order inLa1.88Sr0.12CuO

Cited by 196 publications

References 18 publications

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Glassy low-energy spin fluctuations and anisotropy gap in La1.88Sr0.12CuO4<

Interacting electrons on a fluctuating string

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