| Autor: |
Kopelevich Y; Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, UNICAMP 13083-970, Campinas, São Paulo, Brasil., Raquet B, Goiran M, Escoffier W, da Silva RR, Pantoja JC, Luk'yanchuk IA, Sinchenko A, Monceau P |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2009 Sep 11; Vol. 103 (11), pp. 116802. Date of Electronic Publication: 2009 Sep 09. |
| DOI: |
10.1103/PhysRevLett.103.116802 |
| Abstrakt: |
Measurements of basal plane longitudinal rho(b)(B) and Hall rho(H)(B) resistivities were performed on highly oriented pyrolytic graphite samples in a pulsed magnetic field up to B=50 T applied perpendicular to graphene planes, and temperatures 1.5 K30 T and for all studied samples, we observed a sign change in rho(H)(B) from electron- to holelike. For our best quality sample, the measurements revealed the enhancement in rho(b)(B) for B>34 T (T=1.8 K), presumably associated with the field-driven charge density wave or Wigner crystallization transition. In addition, well-defined plateaus in rho(H)(B) were detected in the ultraquantum limit revealing possible signatures of the fractional quantum Hall effect in graphite. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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