scholarly journals Electronic properties of correlated metals in the vicinity of a charge-order transition: Optical spectroscopy ofα−(BEDT−TTF)2MHg(SCN)4(M=NH4, Rb, Tl)

2006 ◽  
Vol 74 (23) ◽  
Author(s):  
N. Drichko ◽  
M. Dressel ◽  
C. A. Kuntscher ◽  
A. Pashkin ◽  
A. Greco ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Optical Spectroscopy ◽  
Charge Order ◽  
Order Transition ◽  
A Charge

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

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

Heteroarray of cobalt(II)tetrasulfophthalocyanine and cobalt(II) tetrakis(N-methyl-4-pyridyl)porphyrin: synthesis, isolation and electronic properties

2012 ◽  
Vol 16 (02) ◽  
pp. 244-249 ◽  
Author(s):  
Thiago T. Tasso ◽  
Wania C. Moreira
Keyword(s):  
Electronic Properties ◽  
Spectroscopic Characterization ◽  
Charge Transfer Process ◽  
Isolation And Purification ◽  
Electronic Densities ◽  
Porphyrin Synthesis ◽  
A Charge ◽  
Job's Method ◽  
First Time

Porphyrin and phthalocyanine macrocycles with ionic substituents can form mixed assemblies with interesting electronic properties for potential application on the development of new devices. This paper reports the synthesis, isolation and purification of heteroaggregate formed by cobalt(II) 4,4′,4″,4‴-tetrasulfophthalocyanine (CoTsPc) and cobalt(II) tetrakis(N-methyl-4-pyridyl)porphyrin (CoTMPyP), followed by its spectroscopic characterization. Spectroscopic titration, performed with a CoTsPc water/acetone solution, allowed the use of Job's method for determination of the heteroaggregates stoichiometry. The Job's plot revealed the formation of only one predominant heterocomplex in solution, containing two CoTsPc molecules in terminal positions and a central CoTMPyP one. For the first time, a method for isolation and purification of a mixed ionic array has been reported in the literature. The triad's electronic spectrum is quite different from the sum of the macrocycles isolated spectra, due to the overlap of their electronic densities and a charge transfer process between CoTsPc and CoTMPyP.

scholarly journals Photoinduced collective mode, inhomogeneity, and melting in a charge-order system

2018 ◽  
Vol 98 (23) ◽  
Author(s):  
Hitoshi Seo ◽  
Yasuhiro Tanaka ◽  
Sumio Ishihara
Keyword(s):  
Collective Mode ◽  
Charge Order ◽  
Order System ◽  
A Charge

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

Optical and Electronic Properties of Metal-containing Poly-ynes and their Organic Precursors

2004 ◽  
Vol 846 ◽  
Author(s):  
Marek Jura ◽  
Olivia F. Koentjoro ◽  
Paul R. Raithby ◽  
Emma L. Sharp ◽  
Paul J. Wilson
Keyword(s):  
Electronic Properties ◽  
General Formula ◽  
Optical Spectroscopy ◽  
Coupling Reaction ◽  
Nanoelectronic Devices ◽  
Optical And Electronic Properties ◽  
Molar Equivalent ◽  
Organic Precursors

ABSTRACTA series of platinum(II) di-yne complexes with the general formula [PhPt(PR3)2-C≡C-X-C≡C-Pt(PR3)2Ph] where R = Et, nBu and X = a range of extended hetero-aromatic spacer groups, have been prepared by the coupling reaction between two molar equivalents of [PhPt(PR3)2Cl] and one molar equivalent of the terminal dialkyne, HC≡C-X-C≡CH, in the presence of CuI catalyst. The complexes have been characterised by IR, NMR and optical spectroscopy. These materials, which are precursors to related platinum(II) poly-yne polymers, have been specifically designed to be incorporated into metal-molecule-metal junctions in nanoelectronic devices.

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.

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