N. Kimura

Superconductivity induced by spark erosion in ZrZn2

crystals show that cutting by spark erosion leaves a supercon-ducting surface layer. The resistive superconducting transition is destroyed by chemically etchinga layer of 5µm from the sample. No signature of superconductivity is observed in ρ(T) of etchedsamples at the lowest current density measured, J = 675Am

Fermi surface property of UPt3 studied by de Haas–van Alphen and magnetoresistance experiments

Abstract We have performed the de Haas–van Alphen (dHvA) and the magnetoresistance experiments in UPt3. The result of the magnetoresistance is consistent with the topology of the Fermi surface predicted from the 5f-itinerant band theory. The main Fermi surfaces detected by the dHvA are also well explained by the 5f-itinerant band model, although the cyclotron effective masses with 15–105m0 are 10–20 times larger than the corresponding band masses.

Fermi surfaces of LaRhSi3 and CeRhSi3

CeRhSi 3 has the large electronic specific-heat coefficient γ = 120 mJ/mol K 2 and the high Kondo temperature T K ∼ 100 K, although its magnetic susceptibility follows the Curie-Weiss law and the specific heat indicates magnetic ordering at 1.8 K. In order to elucidate the 4f-electron nature in CeRhSi 3 , we have grown single crystals of CeRhSi 3 and of its reference material LaRhSi 3 and measured the electrical resistivity, the magnetic susceptibility and the de Haas-van Alphen (dHvA) effect. Comparison of the angular dependence of the dHvA frequency in CeRhSi 3 to that in LaRhSi 3 , indicates that the 4f-electrons of CeRhSi 3 are itinerant.

Magnetic phase diagram and the pressure and field dependence of the Fermi surface in UGe 2

The ac susceptibility and de Haas\char21{}van Alphen (dHvA) effect in

MAGNETIC PROPERTIES OF R3PD20GE6 (R = PR AND ND)

{\mathrm{UGe}}_{2}

Studies of superconductivity and magnetism in UPt3 by μ+SR

are measured at pressures P up to 17.7 kbar for the magnetic field B parallel to the a axis, which is the easy axis of magnetization. Two anomalies are observed at

Structure and magnetism in nanocrystalline Ca(La)B6 films

{B}_{x}(P)

Crystal field effects in R3Pd20Ge6 (R=Pr and Nd)

and

Spin-split fermi surfaces in CexLa1-xB6CexLa1-xB6 and PrxLa1-xB6PrxLa1-xB6

{B}_{m}(P)