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Bulk Superconductivity Below 6 K in PdBi2Te3 Topological Single Crystal

Journal Article


Abstract


  • We study the structural and bulk superconducting properties of self-flux grown PdBi2Te3 single crystal. Phase purity of as grown crystal is confirmed by Rietveld refinement of gently crushed powder XRD of the same. PdBi2Te3 crystallizes in rhombohedral structure with R-3 m space group along with small impurity of Bi. Scanning electron microscopy (SEM) images showed layered structure and the elemental analysis by energy dispersive X-ray analysis (EDAX) done on same confirmed the stoichiometry to be near to PdBi2Te3. Characteristic vibrational modes, viz., A11g, Eg2, and A21g, are clearly observed in Raman spectrum and are slightly shifted from that as in case of Bi2Te3. Bulk superconductivity is confirmed by FC and ZFC magnetization measurements (M-T) exhibiting diamagnetic transition with Tconset at around 6 K. M-H plots at different temperatures of 2 K, 2.5 K, 3 K, 3.5 K, 4 K, 4.5 K, 5 K, and 6 K showed clear opening of the loop right up to 6 K. Both M-T and M-H clearly establish the appearance of bulk type II superconductivity below 6 K in studied PdBi2Te3. The lower critical field Hc1 and upper critical field Hc2 are at 180 Oe at 4800 Oe, respectively, at 2 K for as grown PdBi2Te3 crystal. Other critical parameters of superconductivity such as coherence length, penetration depth and kappa parameter are also calculated.

Publication Date


  • 2020

Citation


  • Sharma, M. M., Sang, L., Rani, P., Wang, X. L., & Awana, V. P. S. (2020). Bulk Superconductivity Below 6 K in PdBi2Te3 Topological Single Crystal. Journal of Superconductivity and Novel Magnetism, 33(5), 1243-1247. doi:10.1007/s10948-019-05417-w

Scopus Eid


  • 2-s2.0-85078232401

Start Page


  • 1243

End Page


  • 1247

Volume


  • 33

Issue


  • 5

Abstract


  • We study the structural and bulk superconducting properties of self-flux grown PdBi2Te3 single crystal. Phase purity of as grown crystal is confirmed by Rietveld refinement of gently crushed powder XRD of the same. PdBi2Te3 crystallizes in rhombohedral structure with R-3 m space group along with small impurity of Bi. Scanning electron microscopy (SEM) images showed layered structure and the elemental analysis by energy dispersive X-ray analysis (EDAX) done on same confirmed the stoichiometry to be near to PdBi2Te3. Characteristic vibrational modes, viz., A11g, Eg2, and A21g, are clearly observed in Raman spectrum and are slightly shifted from that as in case of Bi2Te3. Bulk superconductivity is confirmed by FC and ZFC magnetization measurements (M-T) exhibiting diamagnetic transition with Tconset at around 6 K. M-H plots at different temperatures of 2 K, 2.5 K, 3 K, 3.5 K, 4 K, 4.5 K, 5 K, and 6 K showed clear opening of the loop right up to 6 K. Both M-T and M-H clearly establish the appearance of bulk type II superconductivity below 6 K in studied PdBi2Te3. The lower critical field Hc1 and upper critical field Hc2 are at 180 Oe at 4800 Oe, respectively, at 2 K for as grown PdBi2Te3 crystal. Other critical parameters of superconductivity such as coherence length, penetration depth and kappa parameter are also calculated.

Publication Date


  • 2020

Citation


  • Sharma, M. M., Sang, L., Rani, P., Wang, X. L., & Awana, V. P. S. (2020). Bulk Superconductivity Below 6 K in PdBi2Te3 Topological Single Crystal. Journal of Superconductivity and Novel Magnetism, 33(5), 1243-1247. doi:10.1007/s10948-019-05417-w

Scopus Eid


  • 2-s2.0-85078232401

Start Page


  • 1243

End Page


  • 1247

Volume


  • 33

Issue


  • 5