Tatsuya Yanagisawa

Quadrupolar effect and rattling motion in the heavy-fermion superconductor PrOs 4 Sb 12

The elastic properties of a filled skutterudite

Geometrical Quadrupolar Frustration in DyB4

{\mathrm{PrOs}}_{4}{\mathrm{Sb}}_{12}

Tunneling and rattling in clathrate crystal

with a heavy fermion superconductivity at

Correlated Electron Phenomena in Ce- and Pr-based Filled Skutterudite Arsenides and Antimonides

{T}_{\mathrm{C}}=1.85\mathrm{K}

Elastic Constant in Magnetic Fields and Singlet-Triplet State of Heavy Fermion Superconductor PrOs4Sb12

have been investigated. The elastic softening of

Quadrupole Ordering in Clathrate Compound Ce3Pd20Si6

{(C}_{11}\ensuremath{-}{C}_{12})/2

Multiple ordered phases in the filled skutterudite compound PrOs4As12

and

Ultrasonic Investigation of Off-Center Rattling in Filled Skutterudite Compound NdOs4Sb12

{C}_{44}

Crystalline electric field effects in the filled skutterudite compound PrOs4P12

with lowering temperature down to

Hybridization-driven orthorhombic lattice instability in URu_{2}Si_{2}

{T}_{\mathrm{C}}