169 citations · 1.8k across the 62 of their papers we have counts for
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Ferromagnetic and metamagnetic transitions in itinerant electron systems: a microscopic study
Hiroyuki Yamase
We perform a microscopic study of itinerant ferromagnetic systems. We reveal a very rich phase diagram in the three-dimensional space spanned by the chemical potential, a magnetic…
Cuprate Superconductors in the Vicinity of a Pomeranchuk Instability
Hiroyuki Yamase
We propose that cuprate superconductors are in the vicinity of a spontaneous d-wave type Fermi surface symmetry breaking, often called a d-wave Pomeranchuk instability. This idea i…
Theoretical insights into electronic nematic order, bond-charge orders, and plasmons in cuprate superconductors
Hiroyuki Yamase
In this article, we focus on the charge degree of freedom in cuprate superconductors and review theoretical insights into the electronic nematic order, bond-charge orders, and plas…
Magnetic Excitation of t-J Model with Quasi-One-Dimensional Fermi Surface -- Possible Relevance to LSCO Systems
Hiroyuki Yamase, Hiroshi Kohno
On the basis of the picture of a quasi-one-dimensional (q-1d) Fermi surface (FS), recently proposed by authors for LSCO systems, spin excitation spectrum, Im chi(q,omega), is calcu…
Possible Quasi-One-Dimensional Fermi Surface in La_{2-x}Sr_{x}CuO_4
Hiroyuki Yamase, Hiroshi Kohno
To reconcile the two experimental findings on La_{2-x}Sr_{x}CuO_4, namely, Fermi surface (FS) observed by angle-resolved photoemission spectroscopy and sharp incommensurate magneti…
Instability toward Formation of Quasi-One-Dimensional Fermi Surface in Two-Dimensional t-J Model
Hiroyuki Yamase, Hiroshi Kohno
We show within the slave-boson mean field approximation that the two-dimensional t-J model has an intrinsic instability toward forming a quasi-one-dimensional (q-1d) Fermi surface.…