Here we report the evidence of the type-II Dirac Fermion in the layered crystal PdTe 2. The de Haas-van Alphen oscillations find a small Fermi pocket with a cross section of 0.077nm -2 with a nontrivial Berry phase. First-principal calculations reveal that it is originated from the hole pocket of a tilted Dirac cone. Angle Resolved Photoemission Spectroscopy demonstrates a type-II Dirac cone featured dispersion.We also suggest PdTe 2 is an improved platform to host the topological superconductors.
Based on current retrospective evidences, TG and PG had similar overall survival outcome for proximal gastric cancer, but TG showed lower recurrence rate. PG with gastroesophagostomy had higher incidence of reflux esophagitis and anastomotic stenosis. TG can be recommendation for proximal gastric cancer, although more high-quality trials are still expected.
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