arXiv subjects

V. N. Mantsevich

Publications and source records attributed to V. N. Mantsevich.

39 records · Page 3Linked to original sources

arXiv2008

A crystal cleavage mechanism for UHV STM

A device for UHV cleavage of crystal specimens for the use with STM has been suggested and developed. We present a device suitable for the precise cleavage of semiconductors. The device needs only small space and can be easily mounted in a small and compact UHV chamber equipped with a wobble stick manipulator. In order to prove the technique UHV STM measurements on InAs(110) surfaces with different bulk conductivities (p-and n-type) have been performed.

cond-mat.mtrl-sci↗

arXiv2008

Tuning of tunneling current noise spectra singularities by localized states charging

We report the results of theoretical investigations of tunneling current noise spectra in a wide range of applied bias voltage. Localized states of individual impurity atoms play an important role in tunneling current noise formation. It was found that switching "on" and "off" of Coulomb interaction of conduction electrons with two charged localized states results in power law singularity of low-frequency tunneling current noise spectrum ($1/f^α$) and also results on high frequency component of tunneling current spectra (singular peaks appear).

cond-mat.mtrl-sci↗

arXiv2008

The influence of localized states charging on 1/f^α tunneling current noise spectrum

We report the results of theoretical investigations of low frequency tunneling current noise spectra component (1/f^α). Localized states of individual impurity atoms play the key role in low frequency tunneling current noise formation. It is found that switching "on" and "off" of Coulomb interaction of conduction electrons with one or two charged localized states results in power law singularity of low-frequency tunneling current noise spectrum 1/f^α. Power law exponent in different low frequency ranges depends on the relative values of Coulomb interaction of conduction electrons with different charged impurities.

cond-mat.mtrl-sci↗