Electron-electron interaction in carbon nanostructures

The electron-electron interaction in carbon nanostructures was studied. A new method which allows to determine the electron-electron interaction constant $\lambda_c$ from the analysis of quantum correction to the magnetic susceptibility and the magnetoresistance was developed. Three types of carbon materials: arc-produced multiwalled carbon nanotubes (arc-MWNTs), CVD-produced catalytic multiwalled carbon nanotubes (c-MWNTs) and pyrolytic carbon were used for investigation. We found that $\lambda_c$=0.2 for arc-MWNTs (before and after bromination treatment); $\lambda_c$ = 0.1 for pyrolytic graphite; $\lambda_c >$ 0 for c-MWNTs. We conclude that the curvature of graphene layers in carbon nanostructures leads to the increase of the electron-electron interaction constant $\lambda_c$.Comment: 12 pages, 18 figures, to be published in the Proceedings of the NATO Advanced Research Workshop on Electron Correlation in New Materials and Nanosystems, NATO Science Series II, Springer, 200

RUSSIA AND CHINA: THE MAIN AREAS OF DEVIANCE AT THE BEGINNING OF THE XXI CENTURY

The article analyses the main forms of deviance in modern Russia and in modern China. Found that media of deviant behavior, both in Russia and in China, are recruited from all segments of society. It was revealed that on threats, social urgency and magnitude of the manifestations of the first place both in Russia and in China took the crime, followed by alcoholism, drug abuse, suicide, corruption. There are two opposing trends in the evolution of deviance: in Russia there is in General a spontaneous escalation of deviance in China-minimization of deviance, mixing its manifestations. This article is useful for establishing an effective social control over deviant processes with a view to their elimination

RUSSIA AND CHINA: THE MAIN AREAS OF DEVIANCE AT THE BEGINNING OF THE XXI CENTURY

The article analyses the main forms of deviance in modern Russia and in modern China. Found that media of deviant behavior, both in Russia and in China, are recruited from all segments of society. It was revealed that on threats, social urgency and magnitude of the manifestations of the first place both in Russia and in China took the crime, followed by alcoholism, drug abuse, suicide, corruption. There are two opposing trends in the evolution of deviance: in Russia there is in General a spontaneous escalation of deviance in China-minimization of deviance, mixing its manifestations. This article is useful for establishing an effective social control over deviant processes with a view to their elimination