TY - JOUR
T1 - Hydrostatic pressure (8 GPa) dependence of electrical resistivity of BaCo2As2 single crystal
AU - Ganguli, Chandreyee
AU - Matsubayashi, Kazuyuki
AU - Ohgushi, Kenya
AU - Uwatoko, Yoshiya
AU - Kanagaraj, Moorthi
AU - Arumugam, Sonachalam
N1 - Funding Information:
A part of this work was supported by Monbukagakusho Scholarship from the Ministry of Education, Science, Culture and Sports (MEXT), Japan . The author S. Arumugam would like to thank DST (SERC, IDP, and FIST) , UGC and UGC-SAP for the financial support. M. Kanagaraj wishes to acknowledge CSIR for the fellowship.
PY - 2013/10
Y1 - 2013/10
N2 - The pressure dependence of the electrical resistivity of BaCo 2As2 single crystal as a function of temperature was measured at ambient and high pressures up to 8 GPa for the first time using cubic anvil high pressure cell. It is observed that at room temperature the resistivity monotonically decreases with increasing pressure and it remains in the metallic state even at an applied pressure of 8 GPa. From the temperature dependence of the resistivity measurements under pressure, we found that superconductivity is absent up to 8 GPa. The value of the electron's scattering factor (A) is found to be large at ambient pressure and it decreases with the application of pressure, indicating that the substantial electron correlation effect of BaCo2As2 is reduced under pressure, revealing a dramatic change of density of states at the Fermi energy.
AB - The pressure dependence of the electrical resistivity of BaCo 2As2 single crystal as a function of temperature was measured at ambient and high pressures up to 8 GPa for the first time using cubic anvil high pressure cell. It is observed that at room temperature the resistivity monotonically decreases with increasing pressure and it remains in the metallic state even at an applied pressure of 8 GPa. From the temperature dependence of the resistivity measurements under pressure, we found that superconductivity is absent up to 8 GPa. The value of the electron's scattering factor (A) is found to be large at ambient pressure and it decreases with the application of pressure, indicating that the substantial electron correlation effect of BaCo2As2 is reduced under pressure, revealing a dramatic change of density of states at the Fermi energy.
KW - A. Superconductors
KW - B. Crystal growth
KW - C. High pressure
KW - D. Electrical properties
KW - E. Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=84882275402&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84882275402&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2013.07.003
DO - 10.1016/j.materresbull.2013.07.003
M3 - Article
AN - SCOPUS:84882275402
SN - 0025-5408
VL - 48
SP - 4329
EP - 4331
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 10
ER -