| Issue |
Europhys. Lett.
Volume 57, Number 5, March 2002
|
|
|---|---|---|
| Page(s) | 704 - 710 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00520-y | |
| Published online | 01 September 2002 | |
Mesoscopic frustrated phase separation in electronic systems
1
INFM - Dipartimento
di Fisica, Università di Roma “La Sapienza”
Piazzale A. Moro 2, I-00185 Roma, Italy
2
Consejo Nacional de Investigaciones Científicas y Tecnicas
Centro Atómico Bariloche
and Instituto Balseiro 8400 S. C. de Bariloche, Argentina
Received:
17
August
2001
Accepted:
4
December
2001
We analyze phase separation (PS) among two electronic phases, frustrated by the long-range Coulomb interaction. We define a dimensionless parameter λ which characterizes the degree of frustration. Frustrated PS appears abruptly as a function of the global electronic density and exhibits strong nonlinearities as compared with ordinary PS. Inhomogeneities of one phase, hosted by the other phase, result on a scale of the order of or smaller than the electric-field screening length. In general above a critical λ the system remains in a single phase except close to a critical electronic density where PS among neutral phases is accompanied by a lattice instability.
PACS: 64.75.+g – Solubility, segregation, and mixing; phase separation / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 71.10.Ca – Electron gas, Fermi gas
© EDP Sciences, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.