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Isaacs, Ellen; Aeppli, G.; Zschack, P.; Cheong, S. W.; Williams, H. J.; Buttrey, D. J.

doi:10.1103/physrevlett.72.3421

Cited by 59 publications

(35 citation statements)

References 21 publications

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“…It is interesting to note that in the superconducting phase of LSCO, the incommensurate magnetic superstructure in the inelastic neutron scattering [70][71][72][73] appears at 45°from the stripe direction determined by elastic x-ray diffraction. 63 This is not the case in the insulating doped nickelates La 2Ϫx Sr x NiO 4 where both magnetic and structural modulation follow the same direction. 63,74 …”

Section: Discussion: the Stripe Structure Of The Cuo 2 Planementioning

confidence: 99%

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Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
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Temperature-dependent polarized Cu K-edge x-ray absorption has been used to investigate local structural distortions in the CuO 2 plane of the La 1.85 Sr 0.15 CuO 4 system. The Cu-O pair distribution shows the presence of a minority phase containing CuO 6 octahedra characterized by a shorter Cu-O͑apical͒ bond ͑⌬RϳϪ0.1 Å͒ and two longer Cu-O͑planar͒ bonds ͑⌬Rϳϩ0.08 Å͒ and a tilting angle of 16°Ϯ2°. The temperature-dependent distortions show a maximum around T* (ϳ1.6T c ) and a minimum at T c ͑ϳ35 K͒. The data show the coexistence of two types of doped charges in different stripes in the superconducting phase.

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Section: Discussion: the Stripe Structure Of The Cuo 2 Planementioning

confidence: 99%

“…63 This is not the case in the insulating doped nickelates La 2Ϫx Sr x NiO 4 where both magnetic and structural modulation follow the same direction. 63,74 …”

Section: Discussion: the Stripe Structure Of The Cuo 2 Planementioning

confidence: 99%

Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7][8][9][10] The NMR and nuclear quadrupole resonance ͑NQR͒ studies of both antiferromagnetic and metallic compounds contributed significantly to the understanding of this matter, measuring the electric-field gradients ͑EFG's͒ at nuclear positions, and being very sensitive to the formation of the local spins.…”

Section: Introductionmentioning

confidence: 99%

Electric-field-gradient analysis of high-Tcsuperconductors

Kupčić¹,

Barišić²,

Tutiš³

1998

Phys. Rev. B

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The qualitative and quantitative features of the electronic charge distribution in cuprate superconductors are reexamined on the basis of a comprehensive set of nuclear quadrupole resonance and NMR measurements. A systematic analysis of measured electric-field gradients is performed within the tight-binding approach, commonly used for electronic models in cuprates. Both in-plane and out-of-plane sites and orbitals are considered. Special attention is given to the generic pd model involving only the orbitals in the CuO 2 planes. This model is checked against the experimental data. The physical origin of several material-dependent features is clarified. It is shown that in La 2Ϫx Sr x CuO 4 the 3d 3z 2 Ϫr 2 orbital of the in-plane copper and the 2p z apex oxygen orbital are occupied by a substantially smaller fraction of holes than the in-plane orbitals, at variance with proposals lending importance to copper-apex oxygen hybridization. At the in-plane oxygen site a sizable 2 p z admixture is found at the Fermi level of YBa 2 Cu 3 O 7 . The in-plane charge distribution of Tl 2 Ba 2 CuO 4 is found to be qualitatively similar to that of the high-temperature tetragonal phase of La 2Ϫx Sr x CuO 4 . It appears that the additional holes are shared among copper and oxygen sites in similar proportions. This is shown to be compatible with the large U d Emery model provided that the difference between the p and d atomic energies is comparable to the first neighbor overlap energy.

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“…6,8,10,12,13,14,15,17,22,23,24,25,26 Charge ordering occurs at a temperature T CO typically 100-200 K depending on doping. Magnetic order occurs at a slightly lower temperature T SO .…”

mentioning

confidence: 99%

Magnetization ofLa2−xSrxNiO4+δ
Freeman
¹
,
Boothroyd
²
,
Prabhakaran
³

et al. 2006
Phys. Rev. B
23
5
22
0
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We have studied the magnetization of a series of spin-charge ordered La2−xSrxNiO 4+δ single crystals with 0 ≤ x ≤ 0.5. For fields applied parallel to the ab plane there is a large irreversibility below a temperature TF1 ∼ 50 K and a smaller irreversibility that persists up to near the charge ordering temperature. We observed a novel memory effect in the thermo-remnant magnetization across the entire doping range. We found that these materials retain a memory of the temperature at which an external field was removed, and that there is a pronounced increase in the thermo-remnant magnetization when the system is warmed through a spin reorientation transition.

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Diffuse x-ray scattering fromLa2−xSr

Cited by 59 publications

References 21 publications

Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
View full text Add to dashboard Cite

Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
View full text Add to dashboard Cite

Electric-field-gradient analysis of high-Tcsuperconductors

Magnetization ofLa2−xSrxNiO4+δ
Freeman
¹
,
Boothroyd
²
,
Prabhakaran
³

et al. 2006
Phys. Rev. B
23
5
22
0
View full text Add to dashboard Cite

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Diffuse x-ray scattering fromLa2−xSr

Cited by 59 publications

References 21 publications

Local lattice instability and stripes in theCuO2plane of theLa1.85Saini1, Lanzara2, Ōyanagi3 et al. 1997Phys. Rev. B1285700View full textAdd to dashboardCite

Local lattice instability and stripes in theCuO2plane of theLa1.85Saini1, Lanzara2, Ōyanagi3 et al. 1997Phys. Rev. B1285700View full textAdd to dashboardCite

Electric-field-gradient analysis of high-Tcsuperconductors

Magnetization ofLa2−xSrxNiO4+δFreeman1, Boothroyd2, Prabhakaran3 et al. 2006Phys. Rev. B235220View full textAdd to dashboardCite

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Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
View full text Add to dashboard Cite

Local lattice instability and stripes in theCuO2plane of theLa1.85
Saini
¹
,
Lanzara
²
,
Ōyanagi³
et al. 1997
Phys. Rev. B
128
5
70
0
View full text Add to dashboard Cite

Magnetization ofLa2−xSrxNiO4+δ
Freeman
¹
,
Boothroyd
²
,
Prabhakaran
³

et al. 2006
Phys. Rev. B
23
5
22
0
View full text Add to dashboard Cite