Superconductivity of BaLi4 under pressure

We studied the pressure-induced superconductivity of BaLi4 up to 53 GPa by means of electrical resistivity in a diamond anvil cell. Superconductivity in BaLi4 is first observed at a pressure of 5.4 GPa with a superconducting critical temperature (Tc) of 4.5 K. Below 2 GPa, superconductivity is not o...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2013-09, Vol.25 (37), p.375701-375701
Main Authors: Schaeffer, Anne Marie J, DeLong, Matthew C, Anderson, Zachary W, Talmadge, William B, Guruswamy, Sivaraman, Deemyad, Shanti
Format: Article
Language:English
Subjects:
Barium - chemistry
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Diamond
Electric Conductivity
Exact sciences and technology
Lithium - chemistry
Models, Chemical
Physics
Pressure
Pressure effects
Superconductivity
Transition temperature variations
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Summary:We studied the pressure-induced superconductivity of BaLi4 up to 53 GPa by means of electrical resistivity in a diamond anvil cell. Superconductivity in BaLi4 is first observed at a pressure of 5.4 GPa with a superconducting critical temperature (Tc) of 4.5 K. Below 2 GPa, superconductivity is not observed above the minimum temperature achievable in the current study, 2 K. Between 5.4 and 12 GPa, the Tc increases steeply to its maximum value of 7 K. Above 12 GPa, the pressure dependence of Tc is complex and the sign of dTc dP changes several times in going up to the maximum pressure studied, of 53 GPa.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/25/37/375701