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7 papers · 2 filters
Spin correlations of quantum-spin-liquid and quadrupole-ordered states of TbTiO
Hiroaki Kadowaki, Mika Wakita, Björn Fåk +4
Spin correlations of the frustrated pyrochlore oxide TbTiO have been investigated by using inelastic neutron scattering on single crystalline samples ($x=-0…
Ground-state phase diagram of the one-dimensional Kondo lattice model with a uniaxial anisotropy under transverse fields
Kohei Suzuki, Kazumasa Hattori
We study the effects of transverse magnetic fields on the one-dimensional Kondo lattice model with a uniaxial anisotropy using the density matrix renormalization group. The m…
Dimensional change of quadrupole orders in pseudospin- pyrochlore magnets under [111] field
Hiroaki Kadowaki, Hiroshi Takatsu, Mika Wakita
We have studied long range orders of electric quadrupole moments described by an effective pseudospin- Hamiltonian representing pyrochlore magnets with non-Kramers ion…
Field-rotational magnetocaloric effect: A new experimental technique for accurate measurement of the anisotropic magnetic entropy
Shunichiro Kittaka, Shota Nakamura, Hiroaki Kadowaki +2
We developed a new technique for measuring the thermodynamic entropy as a function of the magnetic field angle. This technique enables high-resolution angle-resolved measurements o…
Multiple impurities and combined local density approximations in Site-Occupation Embedding Theory
Bruno Senjean, Naoki Nakatani, Masahisa Tsuchiizu +1
Site-occupation embedding theory (SOET) is an in-principle-exact multi-determinantal extension of density-functional theory for model Hamiltonians. Various extensions of recent dev…
Continuum excitation and pseudospin wave in quantum spin-liquid and quadrupole ordered states of TbTiO
Hiroaki Kadowaki, Mika Wakita, Björn Fåk +5
The ground states of the frustrated pyrochlore oxide TbTiO have been studied by inelastic neutron scattering experiments. Three single-crystal samples are i…