Superconductivity in LaPd2Bi2 with CaBe2Ge2-type structure
Qing-Ge Mu, Bo-Jin Pan, Bin-Bin Ruan, Tong Liu, Kang Zhao, Lei Shan,, Gen-Fu Chen, and Zhi-An Ren
TL;DR
This paper reports the synthesis and characterization of LaPd2Bi2, a new superconductor with a CaBe2Ge2-type structure, exhibiting type-II superconductivity at 2.83 K, which may shed light on structure-superconductivity relationships.
Contribution
It introduces a novel ternary compound LaPd2Bi2 with a CaBe2Ge2-type structure and demonstrates its superconducting properties for the first time.
Findings
LaPd2Bi2 is a superconductor with Tc = 2.83 K.
It has a primitive tetragonal CaBe2Ge2-type structure.
Exhibits characteristics of type-II superconductivity.
Abstract
Here we report the synthesis and superconductivity of a novel ternary compound LaPd2Bi2. Shiny plate-like single crystals of LaPd2Bi2 were first synthesized by high-temperature solution method with PdBi flux. X-ray diffraction analysis indicates that LaPd2Bi2 belongs to the primitive tetragonal CaBe2Ge2-type structure with the space group P4/nmm (No. 129), and the refined lattice parameters are a = 4.717(2) {\AA}, c = 9.957(3) {\AA}. Electrical resistivity and magnetic susceptibility measurements reveal that LaPd2Bi2 undergoes a superconducting transition at 2.83 K and exhibits the characteristics of type-II superconductivity. The discovery of superconductivity in LaPd2Bi2 with CaBe2Ge2-type structure may help to further understand the possible relationship between the occurrence of superconductivity and the crystal structures in 122-type materials.
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