Papers - Miyamoto, Akihito

Crystal structure and pressure dependence of electrical conductivities of [(CH3) 4N][Pt (dmit) 2] 2

A Kobayashi, A Miyamoto, H Kobayashi, A Clark, AE Underhill

Journal of Materials Chemistry 1 (5), 827-830  1991

Suppression of the Metal Instability and Continuous Change of the Carrier Density in (MeBr-DCNQI)2Cu1−xLix

H Kobayashi, A Miyamoto, H Moriyama, R Kato, A Kobayashi

Chemistry Letters 20 (5), 863-866  1991

Superconducting Transition of a Grease-Coated Crystal of κ-(BEDT-TTF)2Cu[N(CN)2]Cl

H Kobayashi, K Bun, A Miyamoto, T Naito, R Kato, A Kobayashi, ...

Chemistry Letters 20 (11), 1997-2000  1991

Structure and electrical properties of θ-and κ-type BEDT-TSeF salts with bromomercurate anions

T Naito, A Miyamoto, H Kobayashi, R Kato, A Kobayashi

Chemistry Letters 20 (11), 1945-1948  1991

Structural and Physical Properties of κ and θ-(BEDT-TSeF)2TaF6. Molecular Design Aimed Toward the Two-dimensional Metal

R Kato, A Kobayashi, A Miyamoto, H Kobayashi

Chemistry Letters 20 (6), 1045-1048  1991

New Molecular Superconductor, β-[(CH3)4N][Pd(dmit)2]2

A Kobayashi, H Kobayashi, A Miyamoto, R Kato, RA Clark, AE Underhill

Chemistry Letters 20 (12), 2163-2166  1991

Instability of metallic state of DCNQI�X Cu system

H Kobayashi, A Miyamoto, H Moriyama, Y Nishio, K Kajita, W Sasaki, ...

Physica C: Superconductivity 185, 2695-2696  1991

Crystal structure and pressure dependence of electrical conductivities of [(CH<inf>3</inf>)<inf>4</inf>N][Pt(dmit)<inf>2</inf>]<inf>2</inf>

Kobayashi A., Miyamoto A., Kobayashi H., Clark A., Underhill A.

Journal of Materials Chemistry (Journal of Materials Chemistry)  1 ( 5 ) 827 - 830 1991

ISSN  09599428

　View Summary

The crystal structure and electrical conductivities (including the effect of pressure) of [(CH3)4N][Pt(dmit)2] 2 (dmit = 4,5-dimercapto-1,3-dithiole-2-thione) have been studied. The Pt(dmit)2 anions form dimeric structures arranged as one-dimensional stacks along the [110] and [110] directions. A simple band-energy calculation indicates that the conduction band is formed by the HOMO band of Pt(dmit)2 owing to the strong dimeric nature of the molecular stacks.

• Access to Document (DOI)

Suppression of the metal instability and continuous change of the carrier density in (MeBr-DCNQI) 2Cu1-XLix.

H Kobayashi, A Miyamoto, H Moriyama, R Kato, A Kobayashi

Chemistry Letters, 863-866  1991

Superconducting Transition of a Grease-Coated Crystal of. KAPPA.-(BEDT-TTF) 2Cu (N (CN) 2) Cl.

H Kobayashi, K Bun, A Miyamoto, T Naito, R Kato, A Kobayashi, ...

Chemistry Letters, 1997-2000  1991

Structure and Electrical Properties of. THETA.-and. KAPPA.-Type BEDT-TSeF Salts with Bromomercurate Anions.

T Naito, A Miyamoto, H Kobayashi, R Kato, A Kobayashi

Chemistry Letters, 1945-1948  1991

Structural and Physical Properties of. KAPPA. and. THETA.-(BEDT-TSeF) 2TaF6. Molecular Design Aimed Toward the Two-dimensional Metal.

R Kato, A Kobayashi, A Miyamoto, H Kobayashi

Chemistry Letters, 1045-1048  1991

New Molecular Superconductor,. BETA.-((CH3) 4N)(Pd (dmit) 2) 2.

A Kobayashi, H Kobayashi, A Miyamoto, R Kato, RA Clark, AE Underhill

Chemistry Letters, 2163-2166  1991

Anomalous Temperature Dependence of the Resistivity of (DMeO-DCNQI) 2Cu at High Pressure

H Kobayashil, A Miyamoto, R Kato, Y Nishio, K Kajital, W Sasaki

The Physics and Chemistry of Organic Superconductors: Proceedings of the …  1990

Synthesis of 4, 5-Ethylenedithio-4′, 5′-(2-oxatrimethylenedithio) tetrathiafulvalene (EOTT) and Electrical Conductivities of Their Ion-Radical Salts

H Nakano, K Yamada, T Nogami, Y Shirota, A Miyamoto, H Kobayashi

Chemistry letters 19 (11), 2129-2132  1990

Synthesis of 4, 5-ethylenedithio-4', 5'-(2-oxatrimethylenedithio)-tetrathiafulvalene (EOTT) and electrical conductivities of their ion-radical salts.

H Nakano, K Yamada, T Nogami, Y Shirota, A Miyamoto, H Kobayashi

Chemistry letters, 2129-2132  1990

Reentrant behavior in the pressure-temperature dependence of the resistivity of (DMeO-DCNQI)<inf>2</inf>Cu

Kobayashi H., Miyamoto A., Kato R., Kobayashi A., Nishio Y., Kajita K., Sasaki W.

Solid State Communications (Solid State Communications)  72 ( 1 ) 1 - 5 1989.10

ISSN  00381098

　View Summary

The electrical resistivities (ρ{variant}) of (DMeO-DCNQI)2Cu were measured up to 12.5 kbar and down to 1.5 K. Similar to (DMe-DCNQI)2Cu, (DMeO-DCNQI) 2Cu shows a pressure-induced metal instability. But the critical pressure (Pc = 8 kbar), above which the system exhibits the metal instability, is 102 times larger than that of (DMe-DCNQI)2Cu. Reentrance of the metallic phase was observed at 8-9.5 kbar. Above 10 kbar, the reentrant behavior disappears and the system undergoes a sharp metal-insulator transition. At the "reentrant pressure region", ρ{variant} begins to increase at Tmin with decreasing temperature (T) and reaches its maximum at Tmax. Between Tmin and Tmax, ρ{variant} is linearly dependent on log T indicating the scattering of conduction electrons by the magnetic ions (Cu2+): ρ=ρ0 + c log T. The content of Cu2+ seems to vary with pressure. This unique behavior suggests (DMeO-DCNQI)2Cu to be a new family of the dense Kondo materials. © 1989.

• Access to Document (DOI)