Quantum Critical Point in the Spin Glass-Kondo Transition in Heavy Fermion Systems
Alba Theumann, B. Coqblin
Abstract
The Kondo-Spin Glass competition is studied in a theoretical model of a Kondo lattice with an intra-site Kondo type exchange interaction treated within the mean field approximation, an inter-site quantum Ising exchange interaction with random couplings among localized spins and an additional transverse field in the x direction, which represents a simple quantum mechanism of spin flipping. We obtain two second order transition lines from the spin-glass state to the paramagnetic one and then to the Kondo state. For a reasonable set of the different parameters, the two second order transition lines do not intersect and end in two distinct QCP.
Create a lesson
Related papers
Scalable Quantum Monte Carlo for Shannon-Rényi Entropy: An Experiment-visitable Probe of Quantum Phases and Criticality
Dong-Xu Liu, Zhe Wang, Zenan Liu Yi-Ming Ding et al.
Thermally Enhanced Pseudo-Goldstone Spin Gap in the Isotropic Helimagnet ZnCr2Se4
N. D. Andriushin, A. Sanders, J. Reuther et al.
Field-driven phase transition crossover in kagome antiferromagnet Mn3-xCoxSn
Shubhankar Paul, Chanchal Sow
Electronic Structure of a Delafossite Oxide CuAlO2 in Comparison with CuCrO2
Kenta Takahashi, Ryo Kato, Mario Okawa et al.
Magpie: A Graphical Magnon Software
Tobias Weber
Variational Minimization of Almost Strong Zero Modes in Parafermionic Wires
Niklas Tausendpfund, Matteo Rizzi