Strongly correlated two-dimensional electrons in the overdoped limit

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.16051· OSTI ID:5630427

Rodriguez, J P ^[1]; Lederer, P ^[2]

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1. Department of Physics and Astronomy, California State University, Los Angeles, California 90032 (United States) Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Laboratoire de Physique des Solides, Universite Paris enSud, 91405 Orsay Cedex (France)

A square-lattice gauge-theory model for the holon liquid existing in the unconventional metallic phases of strongly interacting two-dimensional electron liquids is introduced. The phase of the holon order parameter couples in a gauge-invariant way to a statistical gauge field, which arises from strong-interaction physics. We find that the superfluid transition that exists in the absence of statistical gauge-field excitations in the holon liquid turns into a crossover phenomenon in the presence of such fluctuations. The corresponding high-temperature phase shows a [ital T]-linear resistance, while the low-temperature phase exhibits a [ital T][sup 2] dependence for the resistance. The crossover temperature scale [ital T][sub [ital c]0] [ital vanishes], however, in the limit of maximum statistical fluctuations. While we find that statistical gauge-field excitations are strictly gapless, the residue of the pole corresponding to such excitations becomes exponentially small at temperatures small in comparison to [ital T][sub [ital c]0].

• OSTI ID: 5630427
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:21; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665400* -- Quantum Physics Aspects of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CORRELATIONS
ELECTRON CORRELATION
FERMI GAS
FLUIDS
GASES
GAUGE INVARIANCE
HIGH-TC SUPERCONDUCTORS
INVARIANCE PRINCIPLES
ORDER PARAMETERS
PHASE STUDIES
SUPERCONDUCTORS
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS