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Kimura, Hiroyuki; Hirota, K.; Matsushita, Hiroki; Yamada, K.; Endoh, Y.; Lee, Seunghun; Majkrzak, C. F.; Erwin, R. W.; Shirane, G.; Greven, M.; Lee, Young S.; Kastner, M. A.; Birgeneau, R. J.

doi:10.1103/physrevb.59.6517

Cited by 240 publications

(218 citation statements)

References 28 publications

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“…As a matter of fact, all the elastic magnetic scattering peaks studied can be categorized into these two classes, powerlaw and exponential. LNSCO with x = 0.12 and x = 0.15 [11], LSCO with x = 0.12 [19] and La 2 CuO 4+y show a power-law ordering, while LSCO with x = 0.2 − 0.7 [23] and Zn-doped LSCO [17,19] display a more like exponential curve. The magnetic moment in LNSCO with x = 0.20 is small and overwhelmed by Nd-ordering, thus the shape of the order parameter is not very clear.…”

Section: Coherence Of Pinningmentioning

confidence: 98%

“…This window dependence is not observed in La 2 CuO 4+y , though very slow critical divergence with temperature may cause such dependence even in the coherent pinning case. Kimura et al [19] have pointed out that doping Zn to LSCO with x ∼ 0.12 considerably shortens the magnetic correlation length, 200Å to 77Å. This implies that the incoherent pinning can be destructive to the coherent pinning.…”

Section: Coherence Of Pinningmentioning

confidence: 99%

“…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]. They have found elastic incommensurate magnetic peaks indicating a spin-density wave (SDW) order with correlation length exceeding 200Å.…”

Section: Overview Of the Elastic Magnetic Peaks In Lscomentioning

confidence: 99%

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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: Coherence Of Pinningmentioning

confidence: 98%

Section: Coherence Of Pinningmentioning

confidence: 99%

Section: Overview Of the Elastic Magnetic Peaks In Lscomentioning

confidence: 99%

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Neutron scattering studies of Zn-doped La2−xSrxCuO4

Hirota

2001

Physica C: Superconductivity

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“…Figure 1a shows the electrical resistance as a function of temperature T and magnetic field H, applied perpendicular to the superconducting CuO 2 planes, for a sample with x=0. 10. The resistance decreases rapidly below the zero-field transition temperature T c (H=0T)=29K, and becomes zero below the irreversibility temperature T irr (H).…”

mentioning

confidence: 94%

“…Introduction of charge carriers via Sr doping reduces the ordered moment until it vanishes at x<0.13. In addition, for x>0.05 the commensurate antiferromagnetism is replaced by incommensurate order [2,3,9,10], where the repeat distance for the pattern of ordered moments is substantially larger than the spacing between neighbouring copper ions. La 2-x Sr x CuO 4 becomes a 2 superconductor for Sr dopings of 0.06<x<0.25; and for underdoped compounds (0.06<x<0.13), both superconductivity and magnetic order are present.…”

mentioning

confidence: 99%

Antiferromagnetic order induced by an applied magnetic field in a high-temperature superconductor

Lake

Rønnow

Christensen

et al. 2002

Nature

538

508

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One view of the cuprate high-transition temperature (high-T c ) superconductors is that they are conventional superconductors where the pairing occurs between weakly interacting quasiparticles, which stand in one-to-one correspondence with the electrons in ordinary metals -although the theory has to be pushed to its limit [1]. An alternative view is that the electrons organize into collective textures (e.g. charge and spin stripes) which cannot be mapped onto the electrons in ordinary metals. The phase diagram, a complex function of various parameters (temperature, doping and magnetic field), should then be approached using quantum field theories of objects such as textures and strings, rather than point-like electrons [2,3,4,5,6]. In an external magnetic field, magnetic flux penetrates type-II superconductors via vortices, each carrying one flux quantum [7]. The vortices form lattices of resistive material embedded in the non-resistive superconductor and can reveal the nature of the ground state -e.g. a conventional metal or an ordered, striped phase -which would have appeared had superconductivity not intervened. Knowledge of this ground state clearly provides the most appropriate starting point for a pairing theory. Here we report that for one high-T c superconductor, the applied field which imposes the vortex lattice, also induces antiferromagnetic order. Ordinary quasiparticle pictures cannot account for the nearly fieldindependent antiferromagnetic transition temperature revealed by our measurements.La 2-x Sr x CuO 4 , is the simplest high-T c superconductor. The undoped compound is an insulating antiferromagnet, where the spin moments on adjacent Cu 2+ ions are antiparallel [8]. Introduction of charge carriers via Sr doping reduces the ordered moment until it vanishes at x<0.13. In addition, for x>0.05 the commensurate antiferromagnetism is replaced by incommensurate order [2,3,9,10], where the repeat distance for the pattern of ordered moments is substantially larger than the spacing between neighbouring copper ions. La 2-x Sr x CuO 4 becomes a 2 superconductor for Sr dopings of 0.06

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Neutron Scattering Studies of Antiferromagnetic Correlations in Cuprates

Tranquada

2006

ChemInform

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Neutron-scattering study of static antiferromagnetic correlations inLa2−xSrx

Cited by 240 publications

References 28 publications

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Neutron scattering studies of Zn-doped La2−xSrxCuO4

Antiferromagnetic order induced by an applied magnetic field in a high-temperature superconductor

Neutron Scattering Studies of Antiferromagnetic Correlations in Cuprates

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