Electronic properties and charge order transition in (TMTTF)2X under c *-direction pressure

2012 ◽  
Vol 9 (5) ◽  
pp. 1161-1163 ◽  
Author(s):  
Mitsuharu Nagasawa ◽  
Tokiko Nagasawa ◽  
Koichi Ichimura ◽  
Kazushige Nomura
Keyword(s):  
Electronic Properties ◽  
Charge Order ◽  
Order Transition

Magnetism and the charge order transition in lightly dopedLa1−xSrxMnO3

2002 ◽  
Vol 65 (17) ◽  
Author(s):  
R. Klingeler ◽  
J. Geck ◽  
R. Gross ◽  
L. Pinsard-Gaudart ◽  
A. Revcolevschi ◽  
...  
Keyword(s):  
Charge Order ◽  
Order Transition

scholarly journals Charge-order transition in the extended Hubbard model on a two-leg ladder

1999 ◽  
Vol 60 (12) ◽  
pp. R8417-R8421 ◽  
Author(s):  
Matthias Vojta ◽  
R. E. Hetzel ◽  
R. M. Noack
Keyword(s):  
Hubbard Model ◽  
Charge Order ◽  
Order Transition ◽  
Extended Hubbard Model

ANELASTIC SPECTROSCOPY STUDY OF THE CHARGE ORDER TRANSITION OF LiMn2O4

2003 ◽  
Vol 17 (04n06) ◽  
pp. 799-804 ◽  
Author(s):  
A. PAOLONE ◽  
R. CANTELLI ◽  
G. ROUSSE ◽  
C. MASQUELIER ◽  
M. FERRETTI
Keyword(s):  
Elastic Constant ◽  
Young’S Modulus ◽  
Time Constant ◽  
Young's Modulus ◽  
Charge Order ◽  
Orthorhombic Phase ◽  
Order Transition ◽  
Strong Decrease ◽  
Large Hysteresis ◽  
Two Phases

We studied the charge order transition of LiMn 2 O 4 by means of anelastic spectroscopy, measuring the Young's modulus, E, and the elastic energy loss function, Q-1. Our measurements confirm the occurrence of a phase transition at 296 K on cooling, showing a large hysteresis on heating. Around the transition temperature the Young's modulus shape reveals that there is at least one elastic constant, possibly c44, decreasing lowering the temperature. Moreover the anelastic spectroscopy results confirm that the transformation is characterised by the coexistence of two phases in a narrow temperature range. The time constant of the transformation of the cubic into the orthorhombic phase sharply decreases lowering T from 296 to 290 K and then increases on further cooling to 289 K. The strong decrease of the time constant around 290 K can be related to the reduction of the c44 elastic constant.

Anisotropic pressure effects on the charge order transition of (TMTTF)2X

2010 ◽  
Vol 405 (11) ◽  
pp. S113-S115 ◽  
Author(s):  
M. Nagasawa ◽  
T. Nagasawa ◽  
K. Ichimura ◽  
K. Nomura
Keyword(s):  
Charge Order ◽  
Order Transition ◽  
Pressure Effects ◽  
Anisotropic Pressure

scholarly journals Optical Conductivity on Charge Order Transition in Organic Dirac Electron System α-(BEDT-TTF)2I3

2018 ◽  
Author(s):  
Daigo Ohki ◽  
Genki Matsuno ◽  
Yukiko Omori ◽  
Akito Kobayashi
Keyword(s):  
Optical Conductivity ◽  
Mean Field Theory ◽  
Mean Field ◽  
Charge Order ◽  
Electron System ◽  
Order Transition ◽  
Peak Structure ◽  
Dirac Electron ◽  
The Mean ◽  
Valence Bands

The optical conductivity in the charge order phase is calculated in the extended Hubbard model describing an organic Dirac electron system α-(BEDT-TTF)2I3 using the mean field theory and the Nakano-Kubo formula. A peak structure due to interband excitation being characteristic in two-dimensional Dirac electron system is found above the charge order gap. It is shown that the peak structure originates from the Van Hove singularities of the conduction and valence bands, where those singularities are located at a saddle point between two Dirac cones in momentum space. The frequency of the peak structure exhibits drastic change in the vicinity of the charge order transition.

The effect of strain and strain symmetry on the charge-order transition in Bi0.4Ca0.6MnO3films

2008 ◽  
Vol 81 (7-8) ◽  
pp. 717-727 ◽  
Author(s):  
Hans M. Christen ◽  
Maria Varela ◽  
Dae Ho Kim
Keyword(s):  
Charge Order ◽  
Order Transition

scholarly journals Theory of the reentrant charge-order transition in the manganites

2001 ◽  
Vol 89 (11) ◽  
pp. 6627-6629 ◽  
Author(s):  
C. Stephen Hellberg
Keyword(s):  
Charge Order ◽  
Order Transition

scholarly journals Disorder to order transition in the magnetic and electronic properties ofURh2Ge2

2000 ◽  
Vol 61 (13) ◽  
pp. 8878-8887 ◽  
Author(s):  
S. Süllow ◽  
S. A. M. Mentink ◽  
T. E. Mason ◽  
R. Feyerherm ◽  
G. J. Nieuwenhuys ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Order Transition

scholarly journals Atomic Scale Tracking of a Charge Order Transition with Continuously Variable Temperature Cryo-STEM

2020 ◽  
Vol 26 (S2) ◽  
pp. 2034-2035
Author(s):  
Noah Schnitzer ◽  
Elisabeth Bianco ◽  
Alemayehu Admasu ◽  
Jaewook Kim ◽  
Sang-Wook Cheong ◽  
...  
Keyword(s):  
Variable Temperature ◽  
Charge Order ◽  
Order Transition ◽  
Atomic Scale ◽  
A Charge
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