Details

Autor(en) / Beteiligte

• Mirarchi, Giovanni
• Grilli, Marco
• Seibold, Götz
• Caprara, Sergio

Titel

The Shrinking Fermi Liquid Scenario for Strange-Metal Behavior from Overdamped Optical Phonons

Ist Teil von

• Condensed matter, 2024-03, Vol.9 (1), p.14

Ort / Verlag

Basel: MDPI AG

Erscheinungsjahr

2024

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• We discuss how the interaction of electrons with an overdamped optical phonon can give rise to a strange-metal behavior over extended temperature and frequency ranges. Although the mode has a finite frequency, an increasing damping shifts spectral weight to progressively lower energies so that despite the ultimate Fermi liquid character of the system at the lowest temperatures and frequencies, the transport and optical properties of the electron system mimic a marginal Fermi liquid behavior. Within this shrinking Fermi liquid scenario, we extensively investigate the electron self-energy in all frequency and temperature ranges, emphasizing similarities and differences with respect to the marginal Fermi liquid scenario.