Superconductivity and strong intrinsic defects in LaPd1-xBi 2

Fei Han, Christos D. Malliakas, Constantinos C. Stoumpos, Mihai Sturza, Helmut Claus, Duck Young Chung, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number144511
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number14
DOIs
Publication statusPublished - Oct 22 2013

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Hall effect
Crystal symmetry
Superconductivity
Charge carriers
Vacancies
superconductivity
Single crystals
Scattering
Magnetic fields
Fluxes
Defects
Electrons
defects
charge carriers
electrical resistivity
single crystals
symmetry
scattering
magnetic fields
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Superconductivity and strong intrinsic defects in LaPd1-xBi 2. / Han, Fei; Malliakas, Christos D.; Stoumpos, Constantinos C.; Sturza, Mihai; Claus, Helmut; Chung, Duck Young; Kanatzidis, Mercouri G.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 14, 144511, 22.10.2013.

Research output: Contribution to journalArticle

Han, Fei ; Malliakas, Christos D. ; Stoumpos, Constantinos C. ; Sturza, Mihai ; Claus, Helmut ; Chung, Duck Young ; Kanatzidis, Mercouri G. / Superconductivity and strong intrinsic defects in LaPd1-xBi 2. In: Physical Review B - Condensed Matter and Materials Physics. 2013 ; Vol. 88, No. 14.
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