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The Bose-Fermi Kondo model with a singular dissipative spectrum: Exact solutions and their implications
Jianhui Dai, Qimiao Si, C. J. Bolech
Quantum dissipation induces a critical destruction of a Kondo screened state, which is of interest in the contexts of quantum critical heavy fermion metals and magnetic nanostructu…
Bose-Fermi Kondo model with Ising anisotropy: cluster-Monte Carlo approach
Stefan Kirchner, Qimiao Si
The Bose-Fermi Kondo model captures the physics of the destruction of Kondo screening, which is of extensive current interest to the understanding of quantum critical heavy fermion…
Magnetic Single-Electron Transistor as a Tunable Model System for Kondo-Destroying Quantum Criticality
Stefan Kirchner, Qimiao Si
Single-electron transistors attached to ferromagnetic leads can undergo a continuous quantum phase transition as their gate voltage is tuned. The corresponding quantum critical poi…
Fermi Surface and Magnetism in the Kondo lattice: A Continuum Field Theory Approach
Seiji J. Yamamoto, Qimiao Si
We consider the Fermi surface inside the antiferromagnetic ordered region of a Kondo lattice system in an arbitrary dimension higher than one. We establish the existence of ${\rm A…
Scaling and Enhanced Symmetry at the Quantum Critical Point of the Sub-Ohmic Bose-Fermi Kondo Model
Stefan Kirchner, Qimiao Si
We consider the finite temperature scaling properties of a Kondo-destroying quantum critical point in the Ising-anisotropic Bose-Fermi Kondo model (BFKM). A cluster-updating Monte…