arXiv subjects

Yu. V. Sharlai

Publications and source records attributed to Yu. V. Sharlai.

21 records · Page 2Linked to original sources

arXiv2007

Electron energy spectrum and the Berry phase in graphite bilayer

We emphasize that there exist four Dirac-type points in the electron-energy spectrum of a graphite bilayer near the point K of its Brillouin zone. One of the Dirac points is at the point K, and three Dirac points lie nearby. Each of these three points generates the Berry phase $π$, while the Dirac point at K gives the phase $-π$. It is these four points that determine the Berry phase in the bilayer. If an electron orbit surrounds all these points, the Berry phase is equal to $2π$.

cond-mat.mtrl-sci↗

arXiv2006

Band-Contact Lines in Electron Energy Spectrum of Graphite

We discuss the known experimental data on the phase of the de Haas -van Alphen oscillations in graphite. These data can be understood if one takes into account that four band-contact lines exist near the HKH edge of the Brillouin zone of graphite.

cond-mat.other↗

arXiv2004

Berry phase and de Haas - van Alphen effect in LaRhIn$_5$

We explain the experimental data on the magnetization of $LaRhIn_5$ recently published by R. G. Goodrich et al. in Phys. Rev.Lett. {\bf 89}, 026401 (2002). We show that the magnetization of a small electron group associated with a band-contact line was detected in that paper. These data provide the first observation of the Berry phase of electrons in metals via the de Haas - van Alphen effect.

cond-mat.mtrl-sci↗