Artículos de revistas
Conduction Electron Spin Resonance Evidence For Internal Field In Graphite
Registro en:
Physica B: Condensed Matter. , v. 320, n. 1-4, p. 413 - 415, 2002.
9214526
10.1016/S0921-4526(02)00762-7
2-s2.0-0036646658
Autor
Sercheli M.S.
Kopelevich Y.
Ricardo Da Silva R.
Torres J.H.S.
Rettori C.
Institución
Resumen
We report conduction electron spin resonance measurements performed on highly oriented pyrolitic graphite samples between 10 and 300K using S (ν = 4GHz), X (ν = 9.4GHz), and Q (ν = 34.4GHz) microwave bands for the external DC-magnetic field applied parallel (H ∥ c) and perpendicular (H ⊥c ) to the sample hexagonal c-axis. The results obtained in the H ∥ c geometry are interpreted in terms of the presence of an effective internal ferromagnetic-like field, H int eff(T, H), that increases as the temperature decreases and the applied DC-magnetic field increases. We associate the occurrence of the H int eff(T, H) with the field-induced metal-insulator transition in graphite and discuss its origin in the light of relevant theoretical models. © 2002 Elsevier Science B.V. All rights reserved. 320 1-4 413 415 Xu, S., (1996) Phys. Rev. Lett., 76, p. 483 Kopelevich, Y., (1999) Fiz. Tverd. Tela (St. Petersburg), 41, p. 2135 Kopelevich, Y., (1999) Phys. Solid State, 41, p. 1959 Kopelevich, Y., (2000) J. Low Temp. Phys., 119, p. 691 Kempa, H., (2000) Solid State Commun., 115, p. 539 Khveshchenko, D.V., (2001) Phys. Rev. Lett., 8720, p. 6401 Dresselhaus, M.S., Dresselhaus, G., Sugihara, K., Spain, I.L., Graphite fibers and filaments Springer Series in Material Science, 5, pp. 179-188. , references therein, Springer, Berlin Dresselhaus, M.S., (1981) Adv. Phys., 30, p. 139 Sercheli, M.S., (2002) Solid State Commun., 121, p. 579 Laughlin, R.B., (1998) Phys. Rev. Lett., 80, p. 5188 Ferrer, E.J., cond-mat/0101308