Kondo Screening in a Magnetically Frustrated Nanostructure: Exact Results on a Stable Non-Fermi-Liquid Phase

An interacting fermion model in d-dimensions is introduced and solved exactly. Low energy excitations have complete spin-charge decoupling. The holon spectrum is gapless and exhibits a pseudo-Fermi surface. Spinons have a gap and, as in the 1-D Hubbard model, the spinons exist only in a limited region of the Brillouin Zone. As a function of electron concentration the system exhibits metal insulator transition.

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Wigner solid versus incompressible Fermi liquid: phase diagram derived from time-resolved photoluminescence

Physica B Condensed Matter ◽

10.1016/0921-4526(93)90318-z ◽

1993 ◽

Vol 184 (1-4) ◽

pp. 38-42 ◽

Cited By ~ 11

Author(s):

I.V. Kukushkin ◽

N.J. Pulsford ◽

K. von Klitzing ◽

R. Haug ◽

K. Ploog ◽

...

Keyword(s):

Phase Diagram ◽

Liquid Phase ◽

Fermi Liquid ◽

Time Resolved ◽

Wigner Solid ◽

Time Resolved Photoluminescence

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Antiferromagnetic Phase Transition and Crossover to Fermi Liquid Phase in a Weakly Coupled Half-Filled Chain System

Journal of the Physical Society of Japan ◽

10.1143/jpsj.67.2590 ◽

1998 ◽

Vol 67 (8) ◽

pp. 2590-2593 ◽

Cited By ~ 18

Author(s):

Jun-ichiro Kishine ◽

Kenji Yonemitsu

Keyword(s):

Phase Transition ◽

Liquid Phase ◽

Fermi Liquid ◽

Antiferromagnetic Phase ◽

Chain System ◽

Weakly Coupled

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DISORDERING OF THE CORRELATED STATE OF THE QUANTUM HALL BILAYER AT FILLING FACTOR ν = 1

Modern Physics Letters B ◽

10.1142/s0217984912501345 ◽

2012 ◽

Vol 26 (21) ◽

pp. 1250134 ◽

Cited By ~ 3

Author(s):

Z. PAPIĆ ◽

M. V. MILOVANOVIĆ

Keyword(s):

Liquid Phase ◽

Ground State ◽

Fermi Liquid ◽

Quantum Hall ◽

Finite Size ◽

Critical Distance ◽

Fermi Liquids ◽

Direct Transition ◽

State Changes ◽

Finite Size Corrections

The phase diagram of a quantum Hall bilayer at total filling ν = 1 contains an incompressible superfluid for small distances d between the layers, as well as the compressible phase corresponding to two uncoupled Fermi liquids for large d. Using exact diagonalization on the sphere and torus geometry, we investigate a long-standing question of the nature of the transition between the two regimes, and the possibility for the existence of a paired phase in the transition region. We find considerable evidence for a direct transition between the superfluid and the Fermi liquid phase, based in particular on the behavior of the ground state energy on the sphere (including appropriate finite-size corrections) as a function of d. At the critical distance dC ≈ 11.6ℓB the topological number ("shift") of the ground state changes, suggesting that tuning the layer separation d in experiment likely leads to a direct transition between the superfluid and the Fermi liquid phase.

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