4 papers
Hall effect of quasi-hole gas in organic single-crystal transistors
J. Takeya, K. Tsukagoshi, Y. Aoyagi +2
Hall effect is detected in organic field-effect transistors, using appropriately shaped rubrene (C42H28) single crystals. It turned out that inverse Hall coefficient, having a posi…
Effects of polarized organosilane self-assembled monolayers on organic single-crystal field-effect transistors
J. Takeya, T. Nishikawa, T. Takenobu +7
The surface conductivity is measured by a four-probe technique for pentacene and rubrene single-crystals laminated on polarized and nearly unpolarized molecular monolayers with app…
Field-induced charge transport at the surface of pentacene single crystals: a method to study charge dynamics of 2D electron systems in organic crystals
J. Takeya, C. Goldmann, S. Haas +3
A method has been developed to inject mobile charges at the surface of organic molecular crystals, and the DC transport of field-induced holes has been measured at the surface of p…
Peculiar roles of spins in the thermal conductivity of pure and doped La_{2}CuO_{4}: Comparison with CuGeO_{3}
Yoichi Ando, X. F. Sun, J. Takeya +1
In-plane and out-of-plane thermal conductivities (κ_{ab} and κ_{c}) are measured on single crystals of pure, 1%-hole-doped, and 1%-Zn-doped La_{2}CuO_{4}. The roles of magnons and…