A functional renormalization group application to the scanning tunneling microscopy experiment

被引：1

作者：

Ramos Cardenas, Jose Juan ^{[1
]}

Rodriguez Lopez, Jose Luis ^{[2
]}

机构：

[1] Univ La Cienega Estado Michoacan, Avenida Univ 3000,Col Lomas Univ, Sahuayo 59103, Michoacan, Mexico

[2] Inst Potosino Invest Cientif & Tecnol AC Camino P, Adv Mat Dept, San Jose, CA 78216 USA

来源：

COGENT PHYSICS | 2015年 / 2卷 / 01期

关键词：

scanning tunneling microscopy (STM); quantum impurity; functional renormalization group (fRG); differential conductance;

D O I：

10.1080/23311940.2015.1110940

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a study of a system composed of a scanning tunneling microscope (STM) tip coupled to an absorbed impurity on a host surface using the functional renormalization group (FRG). We include the effect of the STM tip as a correction to the self-energy in addition to the usual contribution of the host surface in the wide band limit. We calculate the differential conductance curves at two different lateral distances from the quantum impurity and find good qualitative agreement with STM experiments where the differential conductance curves evolve from an antiresonance to a Lorentzian shape.

引用

页数：11

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