Modified Percolation Theory and Its Relevance to Quantum Critical Phenomena

• 作者: John Gaddy Tom Heitmann Wouter Montfrooij
• 来源期刊: 现代物理(英文)
• 学科: 医学
• 关键词: QUANTUM CRITICAL PERCOLATION DYNAMICAL SCALING
• 年，卷（期）: 2014,（8）
• 页码范围: 649-660
• 页数: 12页
• 分类号: R73

摘要

We present a new family of percolation models. We show, using theory and computer simulations, that these represent a new universality class. Interestingly, systems in this class appear to violate the Harris criterion, making model systems within these class ideal systems for studying the influence of disorder on critical behavior. We argue that such percolative systems have already been realized in practice in strongly correlated electron systems that have been driven to the quantum critical point by means of chemical substitution.