307 citations · 1.7k across the 55 of their papers we have counts for
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Duality relations and exotic orders in electronic ladder systems
Tsutomu Momoi, Toshiya Hikihara
We discuss duality relations in correlated electronic ladder systems to clarify mutual relations between various conventional and unconventional phases. For the generalized two-leg…
Renormalization of impurity scattering in one-dimensional interacting electron systems in magnetic field
T. Hikihara, A. Furusaki, K. A. Matveev
We study the renormalization of a single impurity potential in one-dimensional interacting electron systems in the presence of magnetic field. Using the bosonization technique and…
Phase transitions in spin-orbital coupled model for pyroxene titanium oxides
Toshiya Hikihara, Yukitoshi Motome
We study the competing phases and the phase transition phenomena in an effective spin-orbital coupled model derived for pyroxene titanium oxides ATiSi2O6 (A=Na, Li). Using the mean…
Spintronics at Nanoscale: Flat-Band Ferromagnetism in Armchair Nanoribbons and Nanotubes
Hsiu-Hau Lin, Toshiya Hikihara, Bor-Lung Huang +2
We study the electronic correlation effects in armchair nanoribbon and nanotube using weak-coupling approach and non-Abelian density-matrix renormalization-group method. We show th…
Orbital and spin interplay in spin-gap formation in pyroxene titanium oxides ATiSi2O6 (A=Na, Li)
Toshiya Hikihara, Yukitoshi Motome
Interplay between orbital and spin degrees of freedom is theoretically studied for the phase transition to the spin-singlet state with lattice dimerization in pyroxene titanium oxi…