Absence of Superconductivity in LK-99 at Ambient Conditions.

The report of the synthesis of modified lead apatite (LK-99), with evidence of superconductivity at more than boiling water temperature, has steered the scientific community. There have been several failures to reproduce superconductivity in LK-99, despite partial successes. Here, we have continued our efforts to synthesize phase-pure LK-99 with improved precursors.

Growth and characterization of the magnetic topological insulator candidate MnSbTe.

We report a new member of topological insulator (TI) family i.e. MnSbTe, which belongs to MnSbTefamily and is a sister compound of MnBiTe.

Probing the topological surface states in superconducting SnAu single crystal: a magneto transport study.

Materials exhibiting bulk superconductivity along with magnetoresistance (MR) in their normal state have emerged as suitable candidates for topological superconductivity. In this article, we report a flux free method to synthesize single crystal of topological superconductor candidate SnAu. The phase purity and single crystalline nature are confirmed through various characterizations viz.

Signature of weak-antilocalization in sputtered topological insulator BiSe thin films with varying thickness.

We report a low-temperature magneto transport study of BiSe thin films of different thicknesses (40, 80 and 160 nm), deposited on sapphire (0001) substrates, using radio frequency magnetron sputtering technique. The high-resolution x-ray diffraction measurements revealed the growth of rhombohedral c-axis {0003n} oriented BiSe films on sapphire (0001). Vibrational modes of BiSe thin films were obtained in the low wavenumber region using Raman spectroscopy.

Detailed magneto heat capacity analysis of SnAs topological superconductor.

In this article, we report magneto heat capacity analysis of superconducting SnAs. Magneto heat capacity analysis of superconductors is an important tool to determine bulk superconductivity as well as the pairing mechanism of Cooper pairs. SnAs crystal is characterized through x-ray diffraction and x-ray photoelectron spectroscopy.