Curvature and Charge Modulations in Lamellar DNA−Lipid Complexes

2003 ◽  
Vol 107 (15) ◽  
pp. 3624-3630 ◽  
Author(s):  
Daniel Harries ◽  
Sylvio May ◽  
Avinoam Ben-Shaul
Keyword(s):  
Charge Modulations

scholarly journals Mössbauer studies of spin and charge modulations in BaFe2(As1−xPx)2

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
K. Komędera ◽  
J. Gatlik ◽  
A. Błachowski ◽  
J. Żukrowski ◽  
T. J. Sato ◽  
...  
Keyword(s):  
Mössbauer Studies ◽  
Charge Modulations

Crystallographic Features of Electronic States in the Highly-Correlated Electronic System Sr1-xSmxMnO3 around x = 0.50

2016 ◽  
Vol 879 ◽  
pp. 2158-2163 ◽  
Author(s):  
Misato Yamagata ◽  
Yasuhide Inoue ◽  
Yasumasa Koyama
Keyword(s):  
Electronic States ◽  
Electronic System ◽  
Electron System ◽  
Correlated Electron ◽  
Antiferromagnetic Ordering ◽  
Incommensurate Modulation ◽  
Charge Modulations ◽  
Highly Correlated ◽  
Correlated Electron System ◽  
Coexistence State

The highly-correlated electron system Sr1-xSmxMnO3 (SSMO) with the simple-perovskite structure has been found to exhibit fascinating electronic states accompanying antiferromagnetic and ferromagnetic orderings. It was, in particular, reported that the electronic state for 0.46 ≤ x ≤ 0.54 was characterized by the coexistence state consisting of the A-type antiferromagnetic and ferromagnetic states. However, the features of the coexistence state in this Sm-content range have not been understood yet. We have thus investigated the crystallographic features of prepared SSMO samples with 0.46 ≤ x ≤ 0.55, mainly by transmission electron microscopy. As a result, all prepared SSMO samples were first confirmed to have the orthorhombic-Pnma structure at 300 K. When the temperature was lowered from 300 K, in the case of x=0.47, the disordered-Pnma state was found to be transformed into an orbital-modulated (OM) state accompanying an incommensurate modulation. The notable feature of the OM state is that the state becomes unstable with increasing Sm contents at 100 K. In other words, the OM state was never changed into the CE-type state with the orbital and charge modulations. In addition, no orbital-ordered state for the A-type antiferromagnetic ordering was also found for 0.46 ≤ x ≤ 0.55.

scholarly journals Tuning from failed superconductor to failed insulator with magnetic field

2019 ◽  
Vol 5 (6) ◽  
pp. eaav7686 ◽  
Author(s):  
Yangmu Li ◽  
J. Terzic ◽  
P. G. Baity ◽  
Dragana Popović ◽  
G. D. Gu ◽  
...  
Keyword(s):  
Theoretical Perspective ◽  
Three Dimensional ◽  
Oxide Superconductors ◽  
Pairing Mechanism ◽  
Spin Correlations ◽  
Electron Pairing ◽  
Copper Oxide Superconductors ◽  
Charge Modulations ◽  
Antiferromagnetic Spin ◽  
Local Segregation

Do charge modulations compete with electron pairing in high-temperature copper oxide superconductors? We investigated this question by suppressing superconductivity in a stripe-ordered cuprate compound at low temperature with high magnetic fields. With increasing field, loss of three-dimensional superconducting order is followed by reentrant two-dimensional superconductivity and then an ultraquantum metal phase. Circumstantial evidence suggests that the latter state is bosonic and associated with the charge stripes. These results provide experimental support to the theoretical perspective that local segregation of doped holes and antiferromagnetic spin correlations underlies the electron-pairing mechanism in cuprates.

TEMPERATURE AND X-RAY ILLUMINATION EFFECTS IN OXYGEN DOPED La2CuO4

2003 ◽  
Vol 17 (04n06) ◽  
pp. 836-841 ◽  
Author(s):  
G. CAMPI ◽  
D. DI CASTRO ◽  
C. DELL'OMO ◽  
S. AGRESTINI ◽  
N. L. SAINI ◽  
...  
Keyword(s):  
High Resolution ◽  
Synchrotron Radiation ◽  
Coherence Length ◽  
Charge Ordering ◽  
X Ray Diffraction ◽  
Incident Flux ◽  
X Ray ◽  
Stable Domain ◽  
Photon Dose ◽  
Charge Modulations

We have investigated charge ordering in an oxygen doped La 2 CuO 4.1 crystal by high resolution x-ray diffraction using synchrotron radiation. Thanks to the high brilliance synchrotron radiation it has been possible to record a large number of weak superstructure spots due to charge ordering around the main peaks of the average structure. A study of the charge modulations with stage 3.5, and their behaviour as a function of the temperature and the intensity of the x-ray incident flux is reported. We are able to distinguish a microscopic decomposition in; 1) a stable domain, due to charges self trapped into a crystal of static ordered strings of finite length (~ 145 Å) and; 2) bubbles of 'superstripes' showing, as a function of photon dose, a decreasing coherence length at T = 220 K.

Multiple-charge modulations in the ferromagnetic insulating state of lightly doped La1−xSrxMnO3

2011 ◽  
Vol 83 (17) ◽  
Author(s):  
T. Asaka ◽  
S. Mori ◽  
Y. Horibe ◽  
K. Takenaka ◽  
X. Z. Yu ◽  
...  
Keyword(s):  
Charge Modulations ◽  
Multiple Charge

The role of inefficient charge modulations in limiting the current-gain cutoff frequency of the MODFET

1988 ◽  
Vol 35 (7) ◽  
pp. 871-878 ◽  
Author(s):  
M.C. Foisy ◽  
P.J. Tasker ◽  
B. Hughes ◽  
L.F. Eastman
Keyword(s):  
Cutoff Frequency ◽  
Current Gain ◽  
Charge Modulations
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