Quantum Transport Signatures of a Close Candidate for a Type II Nodal-Line Semimetal.

The nodal-line semimetal is a new type of topological state of matter in which the crossing of two energy bands forms a nodal loop. In the absence of spin-orbit coupling, MgBi is predicted as a type II nodal-line semimetal, which may evolve to a topological insulator with a small energy gap of ∼35 meV in the presence of spin-orbit coupling. However, the transport evidence is still lacking.

Neutron scattering study of commensurate magnetic ordering in single crystal CeSb.

Temperature and field-dependent magnetization(, ) measurements and neutron scattering study of a single crystal CeSbare presented. Several anomalies in magnetization curves have been confirmed, i.e.

Physical properties and field-induced metamagnetic transitions in UAuSb.

We have successfully synthesized single crystals of UAuSb using a flux method and present a comprehensive study of its physical properties by measuring the magnetic susceptibility, electrical resistivity and specific heat. Evidence for at least three magnetic phases is observed in the field-temperature phase diagram of UAuSb. In zero field, the system undergoes an antiferromagnetic transition at 71 K, and upon further cooling it passes through another antiferromagnetic phase with a ferromagnetic component, before reaching a ferromagnetic ground state.

Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, FeGeTe.

Searching for heavy fermion (HF) states in non-f-electron systems becomes an interesting issue, especially in the presence of magnetism, and can help explain the physics of complex compounds. Using angle-resolved photoemission spectroscopy, scanning tunneling microscopy, physical properties measurements, and the first-principles calculations, we observe the HF state in a 3d-electron van der Waals ferromagnet, FeGeTe. Upon entering the ferromagnetic state, a massive spectral weight transfer occurs, which results from the exchange splitting.

Three-dimensional bulk electronic structure of the Kondo lattice CeIn3 revealed by photoemission.

We show the three-dimensional electronic structure of the Kondo lattice CeIn3 using soft x-ray angle resolved photoemission spectroscopy in the paramagnetic state. For the first time, we have directly observed the three-dimensional topology of the Fermi surface of CeIn3 by photoemission. The Fermi surface has a complicated hole pocket centred at the Γ-Z line and an elliptical electron pocket centred at the R point of the Brillouin zone.