Fidelity study of the superconducting phase diagram in the two-dimensional single-band Hubbard model
نویسندگان
چکیده
C. J. Jia,1,2 B. Moritz,1,3 C.-C. Chen,1,4 B. Sriram Shastry,5 and T. P. Devereaux1,6 1SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences, 2575 Sand Hill Road, Menlo Park, California 94025, USA 2Department of Applied Physics, Stanford University, California 94305, USA 3Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, USA 4Department of Physics, Stanford University, California 94305, USA 5Department of Physics, University of California, Santa Cruz, California 95064, USA 6Geballe Laboratory for Advanced Materials, Stanford University, California 94305, USA (Received 15 December 2010; revised manuscript received 26 July 2011; published 9 September 2011)
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2 00 3 Renormalization group analysis of magnetic and superconducting instabilities near van Hove band fillings
Phase diagrams of the two-dimensional one-band t-t ′ Hubbard model are obtained within the two-patch and the temperature-cutoff many-patch renor-malization group approach. At small t ′ and at van Hove band fillings anti-ferromagnetism dominates, while with increasing t ′ or changing filling anti-ferromagnetism is replaced by d-wave superconductivity. Near t ′ = t/2 and close to van Hove band fi...
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