Stochastic hyperfine interactions modeling library—Version 2

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract The stochastic hyperfine interactions modeling library (SHIML) provides a set of routines to assist in the development and application of stochastic models of hyperfine interactions. The library provides routines written in the C programming language that (1) read a text description of a model for fluctuating hyperfine fields, (2) set up the Blume matrix, upon which the evolution operator of the system depends, and (3) find the eigenvalues and eigenvectors of the Blume matrix so that theoreti... Title of program: SHIML Catalogue Id: AEIF_v2_0 Nature of problem In condensed matter systems, hyperfine methods such as nuclear magnetic resonance (NMR), Mössbauer effect (ME), muon spin rotation (ΜSR), and perturbed angular correlation spectroscopy (PAC) measure electromagnetic fields due to electronic and magnetic structure within Angstroms of nuclear probes through the hyperfine interaction. When interactions fluctuate at rates comparable to the time scale of a hyperfine method, there is a loss in signal coherence, and spectra in the time domain are damped ... Versions of this program held in the CPC repository in Mendeley Data AEIF_v1_0; SHIML; 10.1016/j.cpc.2010.12.042 AEIF_v2_0; SHIML; 10.1016/j.cpc.2015.10.013本程序源自贝尔法斯特女王大学（Queen's University Belfast）馆藏的CPC程序库（1969-2018年）。 摘要 随机超精细相互作用建模库（stochastic hyperfine interactions modeling library，SHIML）提供了一系列子程序，用于辅助开发与应用超精细相互作用的随机模型。该库采用C编程语言编写，可实现以下功能：（1）读取涨落超精细场模型的文本描述；（2）构建布卢姆矩阵（Blume matrix），系统的演化算子依赖于该矩阵；（3）求解布卢姆矩阵的本征值与本征向量，以便开展理论…… 程序名称：SHIML 目录编号：AEIF_v2_0 问题本质：在凝聚态物质系统中，诸如核磁共振（nuclear magnetic resonance，NMR）、穆斯堡尔效应（Mössbauer effect，ME）、μ子自旋旋转（muon spin rotation，μSR）和扰动角关联光谱（perturbed angular correlation spectroscopy，PAC）等超精细实验方法，可通过超精细相互作用探测核探针埃级范围内的电子与磁结构产生的电磁场。当相互作用的涨落速率与超精细实验的时间尺度相当时，信号相干性会出现损失，时域光谱会被阻尼…… 该程序在Mendeley数据的CPC库中的版本包括： AEIF_v1_0；SHIML；10.1016/j.cpc.2010.12.042 AEIF_v2_0；SHIML；10.1016/j.cpc.2015.10.013