TITLE: Electron hydrodynamics versus conventional fluids: Similarities and differences
AUTHOR: Francisco Domínguez-Adame, Departamento de Física de Materiales, Universidad Complutense de Madrid
WHEN: April, 9 - 12PM
WHERE: Salón de Actos, ICMM
ABSTRACT: Electron hydrodynamics explores how electrons in condensed matter systems behave collectively like a fluid, often exhibiting transport properties that deviate from conventional Ohm’s law. By employing theoretical frameworks inspired by the classical Navier-Stokes equations and the semiclassical Boltzmann transport equation, researchers can capture the complex interplay between electron-electron interactions, momentum relaxation, and boundary effects. This approach has revealed a range of unique macroscopic phenomena, such as viscous flow, nonlocal resistivity, and negative differntial resistance, which are directly linked to the fermionic statistics of electrons, not shared by conventional fluids. The talk will provide an overview of these key phenomena, emphasizing both the experimental challenges in measuring hydrodynamic behavior in two-dimensional materials and the theoretical difficulties in developing accurate predictive models. Additionally, it will discuss emerging applications, including low-dissipation electronic devices and terahertz technology, stressing how insights from electron hydrodynamics could guide the design of electronic materials.
