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6 papers · 2 filters
Spiral antiferromagnets beyond the spin-wave approximation: frustrated and Heisenberg models in the honeycomb lattice
Andrea Di Ciolo, Juan Carrasquilla, Federico Becca +2
We examine the stability of classical states with a generic incommensurate spiral order against quantum fluctuations. Specifically, we focus on the frustrated spin-1/2 and Hei…
Pairing Correlations Near a Kondo-Destruction Quantum Critical Point
J. H. Pixley, Lili Deng, Kevin Ingersent +1
Motivated by the unconventional superconductivity observed in heavy-fermion metals, we investigate pairing susceptibilities near a continuous quantum phase transition of the Kondo-…
Nature of the phases in the frustrated XY model on the honeycomb lattice
Juan Carrasquilla, Andrea Di Ciolo, Federico Becca +2
We study the phase diagram of the frustrated XY model on the honeycomb lattice by using accurate correlated wave functions and variational Monte Carlo simulations. Our results sugg…
Spectral evolution of the SU(4) Kondo effect from the single impurity to the two-dimensional lattice
Alejandro M. Lobos, Marcelo Romero, Armando A. Aligia
We describe the evolution of the SU(4) Kondo effect as the number of magnetic centers increases from one impurity to the two-dimensional (2D) lattice. We derive a Hubbard-Anderson…
Driven Electronic States at the Surface of a Topological Insulator
Benjamin M. Fregoso, Y. H. Wang, N. Gedik +1
Motivated by recent photoemission experiments on the surface of topological insulators we compute the spectrum of driven topological surface excitations in the presence of an exter…
Direct observation of the Mott gap in strontium iridate with a scanning tunneling microscope
John Nichols, Noah Bray-Ali, Gang Cao +1
The single-layer Mott insulator strontium iridate SrIrO was studied using a scanning tunneling microscope. This measurement technique is unique due to the transport propert…