TY - JOUR
T1 - High pressure study of the normal and superconducting states of the layered pnictide oxide Ba1-x NaxTi2Sb2O with x = 0, 0.10, and 0.15
AU - Gooch, M.
AU - Doan, P.
AU - Lorenz, B.
AU - Tang, Z. J.
AU - Guloy, A. M.
AU - Chu, C. W.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/12
Y1 - 2013/12
N2 - Here we present a systematic study of the effects of pressure on the superconducting and spin/charge density wave (SDW/CDW) transitions of Ba 1-xNaxTi2Sb2O (x = 0, 0.10, and 0.15) by means of resistivity measurements. For x = 0 and 0.10, external pressure results in a decease of the SDW/CDW transition temperature Tc; however, no measurable change is observed for the x = 0.15. The pressure effect on the superconducting transition temperature is different for all three samples. For BaTi2Sb2O (x = 0), Tc increases significantly from 1.2 K at zero pressure to ∼2.9 K at 16.1 kbar. The 10% Na-doped sample shows an initial Tc increase up to 4.2 K with pressure which saturates at higher pressure values. For higher Na concentrations (x = 0.15), Tc continuously decreases with increasing pressure.
AB - Here we present a systematic study of the effects of pressure on the superconducting and spin/charge density wave (SDW/CDW) transitions of Ba 1-xNaxTi2Sb2O (x = 0, 0.10, and 0.15) by means of resistivity measurements. For x = 0 and 0.10, external pressure results in a decease of the SDW/CDW transition temperature Tc; however, no measurable change is observed for the x = 0.15. The pressure effect on the superconducting transition temperature is different for all three samples. For BaTi2Sb2O (x = 0), Tc increases significantly from 1.2 K at zero pressure to ∼2.9 K at 16.1 kbar. The 10% Na-doped sample shows an initial Tc increase up to 4.2 K with pressure which saturates at higher pressure values. For higher Na concentrations (x = 0.15), Tc continuously decreases with increasing pressure.
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U2 - 10.1088/0953-2048/26/12/125011
DO - 10.1088/0953-2048/26/12/125011
M3 - Article
AN - SCOPUS:84888331832
SN - 0953-2048
VL - 26
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 12
M1 - 125011
ER -