Synthesis of a Novel Donor, BTFE-DMB, and Electrical Properties of its Iodine Salt

1992 ◽  
Vol 247 ◽  
Author(s):  
Makoto Mizutani ◽  
Keiji Tanaka ◽  
Kiyoshi Ikeda ◽  
Kazushige Kawabata
Keyword(s):  
High Pressure ◽  
Electrical Properties ◽  
Single Crystal ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

ABSTRACT1, 4-Bis [2-(tetrathiafulvalen-2-yl)ethenyl] -2, 5-dimethylbenzene (BTFE-DMB) is synthesized and its structure is found to be planar. The single crystal of its iodine salts undergoes a metal-insulator transition about 180K. The compaction pellets of the iodine salts show the current dependent resistive anomaly under high pressure.

scholarly journals Surface Metal-Insulator Transition on a Vanadium Pentoxide (001) Single Crystal

2007 ◽  
Vol 99 (22) ◽  
Author(s):  
R.-P Blum ◽  
H. Niehus ◽  
C. Hucho ◽  
R. Fortrie ◽  
M. V. Ganduglia-Pirovano ◽  
...  
Keyword(s):  
Single Crystal ◽  
Vanadium Pentoxide ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Surface Metal

Suppression of Metal–Insulator Transition in PrRu4P12under High Pressure Studied by Infrared Spectroscopy

2011 ◽  
Vol 80 (Suppl.A) ◽  
pp. SA092 ◽  
Author(s):  
Hidekazu Okamura ◽  
Ikuo Matsutori ◽  
Akira Takigawa ◽  
Ko Shoji ◽  
Kazuaki Miyata ◽  
...  
Keyword(s):  
High Pressure ◽  
Infrared Spectroscopy ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Metal–insulator transition under high pressure in

2005 ◽  
Vol 359-361 ◽  
pp. 886-888 ◽  
Author(s):  
Hiroyuki Hidaka ◽  
Ikuma Ando ◽  
Hisashi Kotegawa ◽  
Tatsuo C. Kobayashi ◽  
Hisatomo Harima ◽  
...  
Keyword(s):  
High Pressure ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Metal-Insulator Transition in Single Crystal Spinel CuIr2S4 Studied by 63Cu-NMR

2006 ◽  
Author(s):  
K. Kumagai ◽  
M. Sasaki ◽  
N. Yatsu ◽  
T. Wazumi ◽  
N. Matsumoto ◽  
...  
Keyword(s):  
Single Crystal ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Single crystal x-ray study of pressure-induced metal-insulator transition in (DMeDCNQI)2Cu

1997 ◽  
Vol 86 (1-3) ◽  
pp. 2073-2074 ◽  
Author(s):  
Y. Nogami ◽  
T. Date ◽  
K. Oshima ◽  
O Arimoto
Keyword(s):  
Single Crystal ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
X Ray

Spin-state-driven metal-insulator transition in(La,Sr)CoO3under high-pressure

2007 ◽  
Vol 75 (18) ◽  
Author(s):  
R. Lengsdorf ◽  
J.-P. Rueff ◽  
G. Vankó ◽  
T. Lorenz ◽  
L. H. Tjeng ◽  
...  
Keyword(s):  
High Pressure ◽  
Spin State ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

HIGH PRESSURE STUDY OF NOVEL ELECTRONIC PROPERTIES IN Sr2Fe(W1-xMox)O6 NEAR METAL-INSULATOR TRANSITION

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3279-3284
Author(s):  
G. OOMI ◽  
S. KAJI ◽  
Y. TOMIOKA ◽  
Y. TOKURA
Keyword(s):  
High Pressure ◽  
Double Perovskite ◽  
Insulator Transition ◽  
Metallic State ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Electrical Resistivities ◽  
Insulating Properties ◽  
High Pressure Study ◽  
Variable Range Hopping Conduction

Electrical resistivities of double perovskite oxides Sr 2 Fe ( W 1-x Mo x) O 6 have been measured at high pressure and high magnetic field to elucidate the transport properties of these materials. It is found that the main mechanism of the transport in the semiconducting phase is variable range hopping conduction and the insulating properties are suppressed by high pressure to show a crossover to metallic state. The magnetoresistances of these oxides are revealed to decrease at high pressure above 1 GPa. Extremely large Grüneisen parameters are found near x = 0.2, where the metal-insulator transition occurs. The origin for these properties will be briefly discussed in connection with the phase diagram.

Giant 1/f Noise in Low-Tc CMR Manganites: Evidence of the Percolation Threshold

1999 ◽  
Vol 602 ◽  
Author(s):  
V. Podzorov ◽  
M. Uehara ◽  
M. E. Gershenson ◽  
T. Y. Koo ◽  
S-W. Cheong
Keyword(s):  
Phase Separation ◽  
Single Crystal ◽  
Percolation Threshold ◽  
Single Crystals ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Percolation Network

AbstractWe observed a dramatic peak in the 1/f noise at the metal-insulator transition (MIT) in low-Tc, manganites. This many-orders-of-magnitude noise enhancement is observed for both polycrystalline and single-crystal samples of La5/8−y. Pry, Ca3/8MnO3 (y = 0.35 – 0.4) and Pr1−xCaxMnO3 (x = 0.35 – 0.5). This observation strongly suggests that the microscopic phase separation in the low-Tc, manganites causes formation of a percolation network, and that the observed MIT is a percolation threshold. It is shown that the scale of phase separation in polycrystalline samples is much smaller than that in single crystals.

Metal—insulator transition of CuIr2(S,Se)4 under high pressure

1998 ◽  
Vol 177-181 ◽  
pp. 1363-1364 ◽  
Author(s):  
J. Tang ◽  
T. Matsumoto ◽  
T. Furubayashi ◽  
T. Kosaka ◽  
S. Nagata ◽  
...  
Keyword(s):  
High Pressure ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator
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