TY - JOUR
T1 - Superconductivity and strong intrinsic defects in LaPd1-xBi 2
AU - Han, Fei
AU - Malliakas, Christos D.
AU - Stoumpos, Constantinos C.
AU - Sturza, Mihai
AU - Claus, Helmut
AU - Chung, Duck Young
AU - Kanatzidis, Mercouri G.
PY - 2013/10/22
Y1 - 2013/10/22
N2 - Two new phases LaPd1-xBi2 and CePd 1-xBi2 were obtained by growing single crystals in Bi flux. They adopt the tetragonal ZrCuSi2-type structure and feature Bi-square nets and PbO-type PdBi layers with significant partial Pd occupancy. Bulk superconductivity at 2.1 K and metallic behavior above Tc are observed in LaPd1-xBi2. A small residual resistance ratio (RRR) indicates a strong scattering effect induced by the Pd vacancies, which implies an s-wave pairing symmetry in LaPd1-xBi2. The broadening of the resistivity transition was measured under different magnetic fields demonstrating a high upper critical field of 3 T. Hall effect measurements reveal dominantly electron-like charge carriers and single-band transport behavior in LaPd1-xBi2. The paramagnetic CePd1-xBi2 is nonsuperconducting but shows antiferromagnetic ordering below 6 K.
AB - Two new phases LaPd1-xBi2 and CePd 1-xBi2 were obtained by growing single crystals in Bi flux. They adopt the tetragonal ZrCuSi2-type structure and feature Bi-square nets and PbO-type PdBi layers with significant partial Pd occupancy. Bulk superconductivity at 2.1 K and metallic behavior above Tc are observed in LaPd1-xBi2. A small residual resistance ratio (RRR) indicates a strong scattering effect induced by the Pd vacancies, which implies an s-wave pairing symmetry in LaPd1-xBi2. The broadening of the resistivity transition was measured under different magnetic fields demonstrating a high upper critical field of 3 T. Hall effect measurements reveal dominantly electron-like charge carriers and single-band transport behavior in LaPd1-xBi2. The paramagnetic CePd1-xBi2 is nonsuperconducting but shows antiferromagnetic ordering below 6 K.
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U2 - 10.1103/PhysRevB.88.144511
DO - 10.1103/PhysRevB.88.144511
M3 - Article
AN - SCOPUS:84887065207
VL - 88
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 14
M1 - 144511
ER -