Metallic behaviour of boron-containing carbon nanotubes

Hsu WK; Chu SY; Munoz-Picone E; Boldu JL; Firth S; Franchi P; Roberts BP; Schilder A; Terrones H; Grobert N; Zhu YQ; Terrones M; McHenry ME; Kroto HW; Walton DRM

Chemical Physics Letters, Vol.323, No.5-6, 572-579, 2000

DOI10.1016/S0009-2614(00)00553-4 Export Citation

Metallic behaviour of boron-containing carbon nanotubes

Hsu WK, Chu SY, Munoz-Picone E, Boldu JL, Firth S, Franchi P, Roberts BP, Schilder A, Terrones H, Grobert N, Zhu YQ, Terrones M, McHenry ME, Kroto HW, Walton DRM

Paramagnetism in boron-containing carbon nanotubes was detected by SQUID measurements, and a g-value of 2.0020, corresponding to the free carrier spin, was observed over a wide temperature range (108-455 K). This value implies intrinsic metallic behaviour and contrasts with thermally activated semiconduction which multi-walled carbon nanotubes usually exhibit.