Spin Transport in Poly-Acene Films and the Derivative Films by Using the Spin Pumping

The spin transport in thermally evaporated tetracene films and 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) films by using the spin-pumping-induced spin injection method was challenged at room temperature. The spin transport in the TIPS-pentacene films was demonstrated, while the spin transport in tetracene films was not succeeded. For tetracene films, reconstruction of the prepared films was occurred due to the low vapor pressure and it might be caused by the deformation of the ferromagnetic material as the spin injector.