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В. Грушко, Н. Новиков, О. Лысенко, А. Щербаков, Е. Мицкевич
«Теоретическое исследование поведения туннельного тока в сканирующем зондовом микроскопе с алмазным острием»
735–746 (2011)

PACS numbers: PACS numbers: 07.35.+k, 07.79.-v, 68.37.-d, 73.40.Gk, 73.63.Rt, 81.05.uj, 81.07.Lk

Quantum-mechanical model of the working zone of diamond tip of the scanning probe microscope (SPM) is proposed as a set of semi-infinite chains formed by the spherical potential wells with specified depth and radius. Computation of the tunnelling current in the ‘diamond tip–surface’ system of the SPM based on the proposed model is performed. Since the SPM operation mode related to the surface modification requires substantial in-teraction between the SPM tip and the specimen surface, the non-perturbative approach is used to find the dependence of the tunnelling current on SPM ‘tip–specimen’ system parame-ters. Study of the obtained expression defined the hardware uncertainty of the instrument measuring of tunnelling current, which still permits atomic resolution for the instrument topographic operation mode.