Chetan Dhital

TL;DR: High-resolution scanning tunneling microscopy studies of a TCI, Pb1-xSnxSe, reveal the coexistence of zero-mass Dirac fermions protected by crystal symmetry with massive Diracfermions consistent with crystal symmetry breaking, which paves the way for engineering the Dirac band gap and realizing interaction-driven topological quantum phenomena in TCIs.

TL;DR: Interference patterns of a magnetically doped topological insulator Bi(2-x)Fe(x)Te(3+d) are studied by using Fourier transform scanning tunneling spectroscopy and it is revealed that the surface state survives far above the energy where angle-resolved photoemission spectroscopic finds the onset of continuum bulk bands.

TL;DR: In this paper, the magnetic and structural phase behaviors of the single-layer Mott insulating iridate Sr${}{2}$IrO${}_{4}$ were investigated and compared with the bilayer bilayer iridate, where both materials exhibit magnetic domains originating from crystallographic twinning and comparable moment sizes.

TL;DR: In this article, the authors present results from muon spin relaxation/rotation, magnetization, neutron scattering, and transport measurements on polycrystalline samples of the pyrochlore iridates Y2Ir2O7 (Y-227) and Yb2Ir 2O7(Yb-227), and show that insulating members of the iridate family have nearly identical magnetic ground states.

TL;DR: In this paper, the density of states of Sr3Ir2O7 is mapped out spatially using scanning tunnelling microscopy and spectroscopy, yielding insights into the influence of nanoscale heterogeneities on the electronic structure.