Green's function calculation of Ballistic Electron Emission Microscopy currents (BEEM v2.1)

Abstract
We describe the FORTRAN-90 program BEEM v2.1 for the computation of real and reciprocal space currents in Ballistic Electron Emission Microscopy (BEEM), and Spectroscopy (BEES). Based on a LCAO Hamiltonian, the equilibrium one-particle Green's functions of a semi-infinite crystal are obtained using a decimation technique. By means of Keldysh's formalism, the STM tip is coupled to this crystal, and expressions for BEEM currents in real and reciprocal space are obtained. Finally, a Dyson-like e...

Title of program: BEEM
Catalogue Id: ADLR_v1_0

Nature of problem
We describe the Fortran-90 program BEEM v2.1 for the computation of real and reciprocal space currents in Ballistic Electron Emission Microscopy (BEEM), and Spectroscopy (BEES) [1-4].

Versions of this program held in the CPC repository in Mendeley Data
ADLR_v1_0; BEEM; 10.1016/S0010-4655(99)00502-0

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

摘要
本文介绍了用于计算弹道电子发射显微镜（Ballistic Electron Emission Microscopy, BEEM）与弹道电子发射光谱（Spectroscopy, BEES）实空间与倒易空间电流的FORTRAN-90程序BEEM v2.1。本程序基于线性组合原子轨道哈密顿量（Linear Combination of Atomic Orbitals Hamiltonian, LCAO Hamiltonian），采用抽取法获得半无限晶体的平衡单粒子格林函数。借助凯尔迪什形式体系（Keldysh's formalism），将扫描隧道显微镜（Scanning Tunneling Microscope, STM）探针与该晶体耦合，推导得到实空间与倒易空间的BEEM电流表达式。最后给出类戴森（Dyson-like）……

程序名称：BEEM
目录编号：ADLR_v1_0

问题属性
本文介绍用于计算弹道电子发射显微镜（BEEM）与弹道电子发射光谱（BEES）实空间与倒易空间电流的Fortran-90程序BEEM v2.1[1-4]。

孟德雷数据（Mendeley Data）平台《计算机物理通讯（Computer Physics Communications, CPC）》库中收录的本程序版本：
ADLR_v1_0; BEEM; 10.1016/S0010-4655(99)00502-0

本程序源自贝尔法斯特女王大学所维护的CPC程序库（1969-2019）。