Giant TMR effect in Granular-structured C $_{60}$ -Co hybrid films

Sakai, Seiji; Matsumoto, Yoshihiro; Sugai, Isamu*; Mitani, Seiji*; Takanashi, Koki; Takagi, Yasumasa*; Nakagawa, Takeshi*; Yokoyama, Toshihiko*; Naramoto, Hiroshi*; Maeda, Yoshihito

In the present study, the V and T dependences of the TMR effect are investigated intensively for the co-deposited C $_{60}$ -Co films with different compositions. The mechanism of the giant TMR effect is discussed taking our recent results for the microstructures of the granular films (i.e., a hybrid structure of the covalent C $_{60}$ -Co compound and Co nanoparticles dispersed therein) and the electronic and spin states of the C $_{60}$ -Co compound studied by XPS and X-ray magnetic circular dichroism (XMCD) spectroscopy into account.

Language	:	English
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Meeting title	:	Materials Research Society 2008 Fall Meeting
Held date	:	2008/12
Location (city)	:	Boston
Location (country)	:	U.S.A.
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Keywords	:	no keyword
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Registration No. : BB20082952
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Giant TMR effect in Granular-structured C-Co hybrid films

Giant TMR effect in Granular-structured C $_{60}$ -Co hybrid films