Heavy Fermion & Kondo Lattice
Kondo coherence, hybridization gap & heavy mass enhancement
Parameters
Kondo coupling J:
0.30
f-level ε_f/t:
-0.50
Hybridization V/t:
0.30
Temperature T/T_K:
0.10
Heavy fermion:
T_K = D·exp(-1/JN₀)
Below T_K: coherence
m* ~ 100-1000 m_e
v_F* = v_F/m*
Hybridization gap:
Δ_hyb ~ V²/|ε_f|
ρ(T): upturn → drop