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- Max Planck Institute for Gravitational PhysicsDE46 papers
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12 papers · 1 filter
Thermodynamics of the Quantum Critical Point at Finite Doping in the 2D Hubbard Model: A Dynamical Cluster Approximation Study
K. Mikelsons, E. Khatami, D. Galanakis +3
We study the thermodynamics of the two-dimensional Hubbard model within the dynamical cluster approximation. We use continuous time quantum Monte Carlo as a cluster solver to avoid…
The relationship between Hirsch-Fye and weak coupling diagrammatic Quantum Monte Carlo methods
Karlis Mikelsons, Alexandru Macridin, Mark Jarrell
Two weak coupling Continuous Time Quantum Monte Carlo (CTQMC) methods are shown to be equivalent for Hubbard-like interactions. A relation between these CTQMC methods and the Hirsc…
Doping a semiconductor to create an unconventional metal
N. Manyala, J. F. DiTusa, G. Aeppli +1
Landau Fermi liquid theory, with its pivotal assertion that electrons in metals can be simply understood as independent particles with effective masses replacing the free electron…
Influence of Band and Orbital Degeneracies on Ferromagnetism in the Periodic Anderson Model
Unjong Yu, Krzysztof Byczuk, Dieter Vollhardt
We investigate the influence of degeneracies of the conduction band and the -orbital on the stability of ferromagnetism in the periodic Anderson model. To this end we calculate…
High Field de Haas - van Alphen Studies of the Fermi Surfaces of LaMIn (M = Co, Rh, Ir)
Donavan Hall, Luis Balicas, Z. Fisk +3
We report measurements of the de Haas - van Alphen effect on a series of compounds, LaMIn (M = Co, Rh, Ir). The results show that each of the Co and Ir Fermi surfaces (FSs) e…
Mesoscopic Phase Coherence in a Quantum Spin Fluid
Guangyong Xu, C. Broholm, Yeong-Ah Soh +8
Mesoscopic quantum phase coherence is important because it improves the prospects for handling quantum degrees of freedom in technology. Here we show that the development of such c…