65 citations · 192 across the 7 of their papers we have counts for
12 papers · 1 filter
A resistor model for quantum criticality: quasi one-dimensional organic conductors
H. Meier, P. Auban-Senzier, C. Pépin +1
We investigate the metallic transport in the organic superconductor (TMTSF)2PF6 under pressure within the framework of the spin density wave theory in the proximity of a Peierls qu…
The modulated spin liquid: a new paradigm for URuSi
C. Pepin, M. R. Norman, S. Burdin +1
We argue that near a Kondo breakdown critical point, a spin liquid with spatial modulations can form. Unlike its uniform counterpart, we find that this occurs via a second order ph…
Grüneisen ratio at the Kondo breakdown quantum critical point
K. -S. Kim, A. Benlagra, C. Pépin
We show that the scenario of multi-scale Kondo breakdown quantum critical point (QCP) gives rise to a divergent Grüneisen ratio with an anomalous exponent 0.7. In particular, we fi…
Multi-scale fluctuations near a Kondo Breakdown Quantum Critical Point
I. Paul, C. Pepin, M. R. Norman
We study the Kondo-Heisenberg model using a fermionic representation for the localized spins. The mean-field phase diagram exhibits a zero temperature quantum critical point separa…
Selective Mott transition and heavy fermions
C. Pepin
Starting with an extended version of the Anderson lattice where the f-electrons are allowed a weak dispersion, we examine the possibility of a Mott localization of the f-electrons,…
Quantum Correction to Conductivity Close to Ferromagnetic Quantum Critical Point in Two Dimensions
I. Paul, C. Pépin, B. N. Narozhny +1
We study the temperature dependence of the conductivity due to quantum interference processes for a two-dimensional disordered itinerant electron system close to a ferromagnetic qu…