78 citations · 287 across the 9 of their papers we have counts for
12 papers
Spin fluctuations and ferromagnetic order in two-dimensional itinerant systems with Van Hove singularities
P. A. Igoshev, A. A. Katanin, H. Yamase +1
The quasistatic approach is used to analyze the criterion of ferromagnetism for two-dimensional (2D) systems with the Fermi level near Van Hove (VH) singularities of the electron s…
Self-masking of spontaneous symmetry breaking in layer materials
Hiroyuki Yamase
We study d-wave Fermi surface deformations (dFSD), the so-called Pomeranchuk instability, on bilayer and infinite-layer square lattices. Since the order parameter of the dFSD has I…
Theory of reduced singlet pairing without the underlying state of charge stripes in the high-temperature superconductor YBa_2Cu_3O_6.45
Hiroyuki Yamase
Recently, a strongly enhanced xy anisotropy of magnetic excitations was observed in YBa_2Cu_3O_y (YBCO_y) with y=6.45 and Tc=35 K [Science 319, 597 (2008)]. Unlike the observation…
Effect of magnetic field on spontaneous Fermi surface symmetry breaking
Hiroyuki Yamase
We study magnetic field effects on spontaneous Fermi surface symmetry breaking with d-wave symmetry, the so-called d-wave "Pomeranchuk instability''. We use a mean-field model of e…
Competition of Fermi surface symmetry breaking and superconductivity
Hiroyuki Yamase, Walter Metzner
We analyze a mean-field model of electrons on a square lattice with two types of interaction: forward scattering favoring a d-wave Pomeranchuk instability and a BCS pairing interac…
Van Hove singularity and spontaneous Fermi surface symmetry breaking in Sr3Ru2O7
Hiroyuki Yamase, Andrey A. Katanin
The most salient features observed around a metamagnetic transition in Sr3Ru2O7 are well captured in a simple model for spontaneous Fermi surface symmetry breaking under a magnetic…