Kanji Takehana

Possible phase transition deep inside the hidden order phase of ultraclean URu2Si2.

To elucidate the underlying nature of the hidden order (HO) state in heavy-fermion compound URu(2)Si(2), we measure electrical transport properties of ultraclean crystals in a high field, low temperature regime. Unlike previous studies, the present system with much less impurity scattering resolves a distinct anomaly of the Hall resistivity at H;{*} = 22.5 T, well below the destruction field of the HO phase = or approximately 36 T. In addition, a novel quantum oscillation appears above a magnetic field slightly below H;{*}. These results indicate an abrupt reconstruction of the Fermi surface, which implies a possible phase transition well within the HO phase caused by a band-dependent destruction of the HO parameter.

Cyclotron resonance in n-type ZnO

Abstract The magnetic field dependence and the temperature dependence of the cyclotron resonance were investigated in n-type ZnO. The observed resonance was assigned as not a conduction electron cyclotron resonance but trapped electron cyclotron resonance from the magnetic field dependence of the resonant energy. The effective mass and the electron–phonon coupling constant were calculated as m * =0.23 m 0 and α =1.2 from the obtained polaron mass, m * pol =0.29 m 0 .

Far-infrared spectroscopy in the spin-Peierls compound CuGeO 3 under high magnetic fields

Polarized far-infrared (FIR) spectroscopic measurements and FIR magneto-optical studies were performed on the inorganic spin-Peierls compound

Spin-Driven Multiferroic Properties of PbMn7O12 Perovskite

{\mathrm{CuGeO}}_{3}.

Fabrication of a micro-coil pulsed magnet system and its application for solid state physics

An absorption line, which was found at

Magnetostriction and Thermal Expansion Measurements of CuGeO3

98 {\mathrm{cm}}^{\ensuremath{-}1}

Cyclotron resonance and mass enhancement by electron correlation in KFe2As2.

in the dimerized phase

Modification of the quantum hall effect by the charge state of a nearby quantum dot layer

(D

Far-infrared spectroscopy in high magnetic fields

phase), was assigned to a folded phonon mode of

Cyclotron Resonance of n-GaP in a Wide Far Infrared Region

{B}_{3u}