Landau levels in bulk graphite by Raman spectroscopy

被引：26

作者：

Garcia-Flores, A. F. ^{[1
]}

Terashita, H. ^{[1
]}

Granado, E. ^{[1
]}

Kopelevich, Y. ^{[1
]}

机构：

[1] Univ Estadual Campinas, UNICAMP, Inst Phys Gleb Wataghin, BR-13083970 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

Berry phase; excited states; fermion systems; graphite; Landau levels; Raman spectra; INELASTIC LIGHT-SCATTERING; DOPED QUANTUM-WELLS; ELECTRON-GAS; DIRAC-FERMIONS; MAGNETIC-FIELD; GRAPHENE; EXCITATIONS;

D O I：

10.1103/PhysRevB.79.113105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic Raman scattering of bulk graphite at zero magnetic field reveals a structureless signal characteristic of a metal. For B greater than or similar to 2 T, several peaks at energies scaling linearly with magnetic field were observed and ascribed to transitions from the lowest energy Landau level(s) [LL(s)] to excited states belonging to the same ladder. The LLs are equally (unequally) spaced for high (low) quantum numbers, being consistent with the LL sequence from massive chiral fermions [m(*)=0.033(2)m(e)] with Berry's phase 2 pi found in graphene bilayers. These results provide spectroscopic evidence that some of the physics recently revealed by graphene multilayers is also shared by bulk graphite.

引用

页数：4

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