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Drude weight in systems with open boundary conditions
- Source :
- Physical Review B. 102
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 2020.
-
Abstract
- A many-electron conducting system undergoes free acceleration in response to a macroscopic field. The Drude weight $D$---also called charge stiffness---measures the adiabatic (inverse) inertia of the electrons; the $D$ formal expression requires periodic boundary conditions. When instead a bounded sample is addressed within open boundary conditions, no current flows and a constant (external) field only polarizes the sample: the Faraday cage effect. Nonetheless a low-frequency field induces forced oscillations: we show here that the low-frequency linear response of the bounded system is dominated by the adiabatic inertia and allows an alternative evaluation of $D$. Simulations on model one-dimensional systems demonstrate our main message.<br />Comment: 8 pages, 6 figures | Minor corrections w.r.t. v2 (mostly typos) | Accepted for pubblication in Phys. Rev. B
- Subjects :
- Physics
Condensed Matter - Materials Science
Condensed Matter - Mesoscale and Nanoscale Physics
Statistical Mechanics (cond-mat.stat-mech)
Field (physics)
media_common.quotation_subject
Materials Science (cond-mat.mtrl-sci)
FOS: Physical sciences
Charge (physics)
Inertia
law.invention
law
Quantum electrodynamics
Bounded function
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Periodic boundary conditions
Boundary value problem
Faraday cage
Adiabatic process
Condensed Matter - Statistical Mechanics
media_common
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 102
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi.dedup.....b433298fd444d067906b5202e0a32e06