scholarly journals Stability of charge-stripe ordered La2−xSrxNiO4+δ at one third doping

2018 ◽  
Vol 536 ◽  
pp. 720-725 ◽  
Author(s):  
P.G. Freeman ◽  
R.A. Mole ◽  
N.B. Christensen ◽  
A. Stunault ◽  
D. Prabhakaran
Keyword(s):  
Charge Stripe

Cu-NQR Study for Possible Static Spin-Charge Stripe Order in La2-xBaxCuO4withx=1/8

2000 ◽  
Vol 69 (4) ◽  
pp. 1023-1026 ◽  
Author(s):  
Masahiro Matsumura ◽  
Tomohiko Ikeda ◽  
Hideki Yamagata
Keyword(s):  
Static Spin ◽  
Stripe Order ◽  
Charge Stripe

scholarly journals Charge-stripe crystal phase in an insulating cuprate

2018 ◽  
Vol 18 (2) ◽  
pp. 103-107 ◽  
Author(s):  
He Zhao ◽  
Zheng Ren ◽  
Bryan Rachmilowitz ◽  
John Schneeloch ◽  
Ruidan Zhong ◽  
...  
Keyword(s):  
Crystal Phase ◽  
Charge Stripe

scholarly journals Charge order lock-in by electron-phonon coupling in La1.675Eu0.2Sr0.125CuO4

2021 ◽  
Vol 7 (27) ◽  
pp. eabg7394
Author(s):  
Qisi Wang ◽  
Karin von Arx ◽  
Masafumi Horio ◽  
Deepak John Mukkattukavil ◽  
Julia Küspert ◽  
...  
Keyword(s):  
Wave Vector ◽  
Charge Order ◽  
Charge Ordering ◽  
Electron Interaction ◽  
Phonon Coupling ◽  
Electron Phonon Interaction ◽  
Self Energy ◽  
Electron Phonon Coupling ◽  
Charge Stripe ◽  
Lock In

Charge order is universal to all hole-doped cuprates. Yet, the driving interactions remain an unsolved problem. Electron-electron interaction is widely believed to be essential, whereas the role of electron-phonon interaction is unclear. We report an ultrahigh-resolution resonant inelastic x-ray scattering (RIXS) study of the in-plane bond-stretching phonon mode in stripe-ordered cuprate La1.675Eu0.2Sr0.125CuO4. Phonon softening and lifetime shortening are found around the charge ordering wave vector. In addition to these self-energy effects, the electron-phonon coupling is probed by its proportionality to the RIXS cross section. We find an enhancement of the electron-phonon coupling around the charge-stripe ordering wave vector upon cooling into the low-temperature tetragonal structure phase. These results suggest that, in addition to electronic correlations, electron-phonon coupling contributes substantially to the emergence of long-range charge-stripe order in cuprates.

Imprints of charge stripe excitations in the infrared conductivity of La2−xSrxCuO4

2004 ◽  
Vol 408-410 ◽  
pp. 439-440
Author(s):  
Michele Ortolani ◽  
Stefano Lupi ◽  
Andrea Lucarelli ◽  
Paolo Calvani ◽  
Angelo Perla ◽  
...  
Keyword(s):  
Charge Stripe

scholarly journals ab-plane resistivity and possible charge stripe ordering in strongly underdoped La2−xSrxCuO4 single crystals

2000 ◽  
Vol 341-348 ◽  
pp. 1779-1780 ◽  
Author(s):  
R.S. Gonnelli ◽  
V.A. Stepanov ◽  
A. Morello ◽  
G.A. Ummarino ◽  
D. Daghero ◽  
...  
Keyword(s):  
Single Crystals ◽  
Charge Stripe

scholarly journals Charge-stripe ordering from local octahedral tilts: Underdoped and superconductingLa2−xSrxCuO4(0<~x<~0.30)

1999 ◽  
Vol 59 (6) ◽  
pp. 4445-4454 ◽  
Author(s):  
E. S. Božin ◽  
S. J. L. Billinge ◽  
G. H. Kwei ◽  
H. Takagi
Keyword(s):  
Charge Stripe

scholarly journals Synchrotron x-ray diffraction study of a charge stripe order in18-dopedLa1.875Ba0.125−xSrxCuO4

2003 ◽  
Vol 67 (14) ◽  
Author(s):  
H. Kimura ◽  
H. Goka ◽  
M. Fujita ◽  
Y. Noda ◽  
K. Yamada ◽  
...  
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stripe Order ◽  
Charge Stripe ◽  
A Charge

scholarly journals Wave Vector Difference of Magnetic Bragg Reflections and Low Energy Magnetic Excitations in Charge-stripe Ordered La2NiO4.11

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
P. G. Freeman ◽  
S. R. Giblin ◽  
M. Skoulatos ◽  
R. A. Mole ◽  
D. Prabhakaran
Keyword(s):  
Wave Vector ◽  
Magnetic Order ◽  
Volume Fraction ◽  
Transverse Field ◽  
Low Energy ◽  
Zero Energy ◽  
Magnetic Excitations ◽  
Vector Difference ◽  
Charge Stripe ◽  
Goldstone Modes

Abstract We report on the magnetism of charge-stripe ordered La2NiO4.11±0.01 by neutron scattering and μSR. On going towards zero energy transfer there is an observed wave vector offset in the centring of the magnetic excitations and magnetic Bragg reflections, meaning the excitations cannot be described as Goldstone modes of the magnetic order. Weak transverse field μSR measurements determine the magnetically order volume fraction is 87% from the two stripe twins, and the temperature evolution of the magnetic excitations is consistent with the low energy excitations coming from the magnetically ordered volume of the material. We will discuss how these results contrast with the proposed origin of a similar wave vector offset recently observed in a La-based cuprate, and possible origins of this effect in La2NiO4.11.

Polarization Dynamics in La5/3Sr1/3NiO4

1999 ◽  
Vol 602 ◽  
Author(s):  
N. Hakim ◽  
Z. Zhai ◽  
C. Kusko ◽  
P.V. Parimi ◽  
S-W. Cheong ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Dielectric Response ◽  
Charge Ordering ◽  
Dielectric Susceptibility ◽  
Dynamic Susceptibility ◽  
Loss Peak ◽  
Relaxation Rates ◽  
Relaxation Mode ◽  
Microwave Frequencies ◽  
Charge Stripe

AbstractDynamic susceptibility measurements at microwave frequencies (2 – 10GHz) are a sensitive probe of charge dynamcis in La5/3Sr1/3NiO4. Below the charge ordering temperature of 240K, a dielectric loss peak due to a relaxation mode with a large dielectric susceptibility is observed, and is associated with charge stripe formation. The dielectric response for Hω∥b (Eω ⊥ b) is well represented by ε(T) = εo/(1 – iωτ(T)), with εo, ∼ 50, and τ(T) = 2 × 10−9(sec) exp(−T/37K). Parallel conductivity σ(T) contributions dominate at higher temperatures and for Hω∥c (Eω ⊥ c). The dielectric loss peak observed indicates that the charge relaxation rates lie in the GHz frequency ranges.

MECHANISM OF STRIPES IN t–J MODEL

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3662-3667
Author(s):  
TÔRU SAKAI
Keyword(s):  
Phase Separation ◽  
Exchange Interaction ◽  
Correlation Functions ◽  
Nearest Neighbor ◽  
Two Dimensional ◽  
Model Based ◽  
Stripe Order ◽  
Charge Stripe

We consider a possible mechanism of the charge stripe order due to the next-nearest neighbor exchange interaction J′ in the two-dimensional t–J model, based on the concept of the phase separation. We also calculate some hole correlation functions of the finite cluster of the model using the numerical diagonalization, to examine the realization of the mechanism.

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