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(a) Differential conductance dI/dV at 50 mK normalized to its value at the normal state for the as-grown (001) Pb1ySnyTe with y=0, 0.20, 0.80, and 1. The spectrum is featureless for y=0(PbTe) and y=0.20 but shows zero-energy mode characteristics for Sn content (y=0.80 and 1, i.e., SnTe) corresponding to a topological crystalline insulator phase. Evolution of the spectrum with temperature (b) and the magnetic field (c) for y=0.80 and two locations of the point contact on the sample surface, respectively. A magnetic field is applied perpendicularly to the (001) plane. (d) Resistance of this sample measured by a four-contact method with a current density as low as 2.5×103A/cm2. No global superconductivity is detected.

New paper has been published in Physical Review B as „Editors’ Suggestion”

Grzegorz Mazur et al. Rapid Comm. has been selected as „Editors’ Suggestion” – Congratulations!

G. P. Mazur, K. Dybko, A. Szczerbakow, J. Z. Domagala, A. Kazakov, M. Zgirski, E. Lusakowska, S. Kret, J. Korczak, T. Story, M. Sawicki, and T. Dietl, Experimental search for the origin of low-energy modes in topological materials, Phys. Rev. B 100, 041408(R) (2019)

29-07-2019
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