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Transient Localization from the Interaction with Quantum Bosons
Hadi Rammal1, Arnaud Ralko1, Sergio Ciuchi2
1<a href="https://ror.org/02rx3b187">Université Grenoble Alpes</a>, CNRS, Grenoble INP, <a href="https://ror.org/04dbzz632">Institut Néel</a>, 38000 Grenoble, France.
Physical Review Letters
|July 12, 2024
Summary
Quantum localization occurs in electron-boson scattering due to thermal effects, not disorder. This transient phenomenon explains anomalous metallic behavior and suppressed conductivity, offering new insights into interacting quantum matter.
Area of Science:
- Condensed Matter Physics
- Quantum Mechanics
- Materials Science
Background:
- Electron-boson scattering is crucial for understanding material properties.
- Existing models often rely on approximations like weak-coupling or semiclassical treatments.
- The role of quantum localization in the absence of disorder is not fully understood.
Purpose of the Study:
- To investigate electron-boson scattering beyond common approximations.
- To explore quantum localization phenomena at finite temperatures.
- To identify mechanisms behind anomalous metallic behavior.
Main Methods:
- Numerically exact calculations.
- Analysis of electron-boson scattering at finite temperatures.
- Investigation of optical absorption and conductivity.
Main Results:
- Demonstrated a regime of quantum localization driven by thermal boson populations.
- Observed transient localization effective before diffusion.
- Identified a displaced Drude peak in optical absorption.
- Found suppression of conductivity.
Conclusions:
- Quantum localization can arise from dynamical randomness due to thermal bosons.
- Transient localization offers a new explanation for anomalous metallic behavior.
- Findings provide a general mechanism applicable to interacting quantum matter.
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