Pressure Effects on Two-Band Conduction and Superconductivity in C- and Al-Substituted MgB2 Single Crystals

2010 ◽  
Vol 79 (7) ◽  
pp. 074719 ◽  
Author(s):  
Takahiko Masui ◽  
Yuji Mikasa ◽  
Sergey Lee ◽  
Setsuko Tajima
Keyword(s):  
Single Crystals ◽  
Pressure Effects ◽  
Band Conduction

Pressure Effects on Transport Properties of (La0.85Sr0.15)yMnO3 Single Crystals

2015 ◽  
Vol 233-234 ◽  
pp. 273-276
Author(s):  
Aleksandr Shakin ◽  
Denis Abashev ◽  
Dmitry Shulyatev ◽  
Roman Privezentsev ◽  
Nikolay Andreev ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Transport Properties ◽  
Single Crystals ◽  
Vacancy Concentration ◽  
Charge Ordering ◽  
Pressure Effects ◽  
External Hydrostatic Pressure ◽  
Insulator Metal Transition ◽  
Mn Concentration

We have studied single crystals with same La/Sr ratio but different initial Mn concentration, namely (La0.85Sr0.15)0.93MnO3and (La0.85Sr0.15)0.97MnO3. We have observed, that the temperature of insulator-metal transition TIMincreases for both samples and the temperature of charge ordering TCOincreases for (La0.85Sr0.15)0.93MnO3and decreases for (La0.85Sr0.15)0.97MnO3with the external hydrostatic pressure in the range of 0.1 MPa - 1.3 GPa. After analysis of obtained dependence, we have concluded that (La0.85Sr0.15)0.97MnO3sample has higher concentration of Mn vacancy. Thereby we suppose that growth of Mn vacancy concentration decreases transfer interaction of the conducting electrons and enhances charge ordering of Mn3+and Mn4+ions.

scholarly journals High-pressure effects on single crystals of electron-doped Pr2−xCexCuO4

2013 ◽  
Vol 87 (2) ◽  
Author(s):  
C. R. Rotundu ◽  
V. V. Struzhkin ◽  
M. S. Somayazulu ◽  
S. Sinogeikin ◽  
Russell J. Hemley ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Pressure Effects ◽  
High Pressure Effects

Pressure effects on superconductivity of Fe1+yTe1−xSx single crystals

2010 ◽  
Vol 107 (8) ◽  
pp. 083903 ◽  
Author(s):  
Z. T. Zhang ◽  
Z. R. Yang ◽  
L. Li ◽  
L. Pi ◽  
S. Tan ◽  
...  
Keyword(s):  
Single Crystals ◽  
Pressure Effects

Two-band conduction in electron-irradiated n-InSe single crystals

2014 ◽  
Vol 252 (2) ◽  
pp. 346-356 ◽  
Author(s):  
I. V. Mintyanskii ◽  
P. I. Savitskii ◽  
Z. D. Kovalyuk
Keyword(s):  
Single Crystals ◽  
Band Conduction
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