Yoshiya Uwatoko

Effect of pressure on the superconductivity of HoNi2B2C

Abstract The electrical resistance of a single crystal of the magnetic superconductor HoNi 2 B 2 C has been measured as a function of temperature ( T ) and magnetic field ( H ) under high pressure ( P ). It is found that the superconducting transition temperature T c decreases with increasing pressure with d T c /d P = −0.05 K/kbar and the antiferromagnetic transition temperature T N increases with d T N /d P = 0.07 K/kbar. As T c approaches T N , the interplay between these two transitions manifests itself as an increased broadening of the superconducting transition.

The effect of pressure on the Néel temperature of URu2Si2

Abstract The temperature dependence of the electrical resistivity of the intermetallic compound URU 2 Si 2 was measured up to 80 kbar in order to examine the stability of the antiferromagnetic state at high pressures. It was found that the Neel temperature T N (approximately 17 K at 1 bar) increases with increasing pressure at a rate of about 0.2 K kbar −1 below 20 kbar. The increase in T N becomes very sluggish at high pressures (above 50 kbar), with a broad maximum around 80 kbar.

Evolution of Hall Coefficient in Two-Dimensional Heavy Fermion CeCoIn5

We report on the pressure dependence of the Hall coefficient R H in quasi-2D heavy fermion CeCoIn 5 . At ambient pressure, below a temperature associated with the emergence of non-Fermi liquid properties, R H is anomalously enhanced. We found that the restoration of the Fermi liquid state with applied pressure leads to a gradual suppression of this dramatic enhancement. Moreover, the enhancement in R H was found to be confined to an intermediate temperature window, where inelastic electron–electron scattering is dominant. Our results strongly support the presence of cold and hot spots on the Fermi surface probably due to anisotropic scattering by antiferromagnetic fluctuations, which may also prove relevant for the debate on the anomalous normal-state properties of high- T c cuprates.We report on the pressure dependence of the Hall coefficient

Giant magnetoresistance of Fe/Cr superlattices under high pressure

R_H

Effect of pressure on the thermal expansion coefficient of URu2Si2

in quasi-2D heavy fermion CeCoIn

Effect of pressure on the electrical resistivity of CePtSi2

_5

Thermal Expansion of Single Crystalline Kondo Compound CeCu2

. At ambient pressure, below a temperature associated with the emergence of non-Fermi liquid properties,

Anomalous pressure dependence of giant magnetoresistance in magnetic superlattice

R_H

Effect of pressure on the electrical resistivity of CePtGa

is anomalously enhanced. We found that the restoration of the Fermi liquid state with applied pressure leads to a gradual suppression of this dramatic enhancement. Moreover, the enhancement in

Effect of pressure on the resistivity in CeRhSb

R_H