TY - JOUR
T1 - Superconductivity up to 164 K in HgBa2Cam-1CumO2m+2+δ (m=1, 2, and 3) under quasihydrostatic pressures
AU - Gao, L.
AU - Xue, Y. Y.
AU - Chen, F.
AU - Xiong, Q.
AU - Meng, R. L.
AU - Ramirez, D.
AU - Chu, C. W.
AU - Eggert, J. H.
AU - Mao, H. K.
PY - 1994
Y1 - 1994
N2 - The superconducting transition temperatures (Tc's) of optimally doped HgBa2Cam-1CumO2m+2+δ (Hg 1:2:m-1:m) with m=1, 2, and 3 and Hg1-xPbxBa2Ca2Cu3O8+δ [Hg(xPb) 1:2:2:3] have been investigated resistively under quasihydrostatic pressures up to 45 GPa. There seems to be a universal upward shift of Tc under pressure, regardless of m, for all Hg 1:2:m-1:m, implying a common origin for all compounds. Record high Tc's of 164, 154, and 118 K were reached for the optimally doped Hg 1:2:m-1:m with m=3, 2, and 1, respectively. However, the Tc enhancement is suppressed by Pb substitution, suggesting the possibility that Hg plays an important role in these compounds.
AB - The superconducting transition temperatures (Tc's) of optimally doped HgBa2Cam-1CumO2m+2+δ (Hg 1:2:m-1:m) with m=1, 2, and 3 and Hg1-xPbxBa2Ca2Cu3O8+δ [Hg(xPb) 1:2:2:3] have been investigated resistively under quasihydrostatic pressures up to 45 GPa. There seems to be a universal upward shift of Tc under pressure, regardless of m, for all Hg 1:2:m-1:m, implying a common origin for all compounds. Record high Tc's of 164, 154, and 118 K were reached for the optimally doped Hg 1:2:m-1:m with m=3, 2, and 1, respectively. However, the Tc enhancement is suppressed by Pb substitution, suggesting the possibility that Hg plays an important role in these compounds.
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U2 - 10.1103/PhysRevB.50.4260
DO - 10.1103/PhysRevB.50.4260
M3 - Article
AN - SCOPUS:35949006891
SN - 0163-1829
VL - 50
SP - 4260
EP - 4263
JO - Physical Review B
JF - Physical Review B
IS - 6
ER -