Complexity in Strongly Correlated Electronic Systems

By E. Dagotto. Science, 2005

1,754 citations recorded by the source corpus.

A wide variety of experimental results and theoretical investigations in recent years have convincingly demonstrated that several transition metal oxides and other materials have dominant states that are not spatially homogeneous. This occurs in cases in which several physical interactions—spin, charge, lattice, and/or orbital—are simultaneously active. This phenomenon causes interesting effects, such as colossal magnetoresistance, and it also appears crucial to understand the high-temperature superconductors. The spontaneous emergence of electronic nanometer-scale structures in transition metal oxides, and the existence of many competing states, are properties often associated with complex matter where nonlinearities dominate, such as soft materials and biological systems. This electronic complexity could have potential consequences for applications of correlated electronic materials, because not only charge (semiconducting electronic), or charge and spin (spintronics) are of relevance, but in addition the lattice and orbital degrees of freedom are active, leading to giant responses to small perturbations. Moreover, several metallic and insulating phases compete, increasing the potential for novel behavior.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/e46e8e0443ca0b6a98b6576e4a142eb11a90a7e1

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In Condensed Matter Physics

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Towards Oxide Electronics: a Roadmap (2019, background): “Also for this case, due to the complexity behind the inhomogeneous electronic quantum problem [3], the most suited theoretical approaches are those based on atomistic modelling combined with disordered statistical schemes of computation.”
The physics of quantum materials (2017, background): “…of doping-induced disorder and lattice strain on these transitions, and on the mesoscale properties of correlated-electron systems in general 52 , remains an important challenge for quantum materials research—not least because such electronically inhomogeneous states provide fertile ground…”
Electrodynamics of correlated electron materials (2011, background): “Electronic and magnetic phase separation is commonplace in correlated electron systems (Dagotto, 2005).”
Magnetism at the interface between ferromagnetic and superconducting oxides (2006, background): “The unusual quantum states realized in bulk transition metal oxides have been at the forefront of solid-state physics for the past two decade”
Stripe order in the underdoped region of the two-dimensional Hubbard model (2016, methodology): “Vidal, Tensor network states and algorithms in the presence of a global U(1) symmetry.”