The initial density dependence of transport properties: Noble gases

1991 ◽  
Vol 12 (1) ◽  
pp. 27-42 ◽  
Author(s):  
E. Bich ◽  
E. Vogel
Keyword(s):  
Density Dependence ◽  
Transport Properties ◽  
Noble Gases ◽  
Initial Density

DENSITY DEPENDENCE OF THE MAGNETIC AND TRANSPORT PROPERTIES OF YBa2Cu3O7 COMPOUNDS

1987 ◽  
Vol 01 (03n04) ◽  
pp. 973-982 ◽  
Author(s):  
E. Babić ◽  
Ž. Marohnić ◽  
D. Drobac ◽  
M. Prester ◽  
N. Brničević
Keyword(s):  
Density Dependence ◽  
Transport Properties ◽  
Apparent Density ◽  
Critical Field ◽  
Normal State ◽  
Upper Critical Field ◽  
Preparation Condition ◽  
Normal State Resistivity ◽  
Lower Critical Field ◽  
Superconducting Transitions

The dependence of the normal state resistivity, resistive and magnetic superconducting transitions (Tc , Δ Tc ) and of the upper critical field slope (dHC2/dT|T=Tc) on density has been investigated for several YBa2Cu3O7 samples. Resistivity decreases rapidly with increasing density whereas Tc and resistive Δ Tc are insensitive to apparent density. However Δ T'c obtained from a.c. susceptibility decreases rapidly with increasing density. dHC2/dT|T=TC depends sensitively on the actual preparation condition. The lower critical field slope for the most dense sample is also deduced.

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