Theory of oscillations in the STM conductance resulting from subsurface defects (Review Article)

Автор(и)

  • Ye.S. Avotina B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • Yu.A. Kolesnichenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • J.M. van Ruitenbeek Kamerlingh Onnes Laboratorium, Universiteit Leiden, Postbus 9504, 2300 Leiden, The Netherlands

DOI:

https://doi.org/10.1063/1.3514417

Ключові слова:

STM, electron tunneling, subsurface defect, conductance, Friedel oscillations.

Анотація

In this review we present recent theoretical results concerning investigations of single subsurface defects by means of a scanning tunneling microscope (STM). These investigations are based on the effect of quantum interference between the electron partial waves that are directly transmitted through the contact and the partial waves scattered by the defect. In particular, we have shown the possibility imaging the defect position below a metal surface by means of STM. Different types of subsurface defects have been discussed: point-like magnetic and nonmagnetic defects, magnetic clusters in a nonmagnetic host metal, and nonmagnetic defects in a s-wave superconductor. The effect of Fermi surface anisotropy has been analyzed. Also, results of investigations of the effect of a strong magnetic field to the STM conductance of a tunnel point contact in the presence of a single defect has been presented.

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Опубліковано

2010-09-23

Як цитувати

(1)
Avotina, Y.; Kolesnichenko, Y.; Ruitenbeek, J. van. Theory of Oscillations in the STM Conductance Resulting from Subsurface Defects (Review Article). Fiz. Nizk. Temp. 2010, 36, 1066-1084.

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