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SUMMARY:Discovery of a weak topological insulating state and van Hove sing
 ularity in triclinic RhBi2 - Gunnar Lange
DTSTART:20201028T113000Z
DTEND:20201028T123000Z
UID:TALK153208@talks.cam.ac.uk
CONTACT:Angela Harper
DESCRIPTION:Weak topological insulators are phases where topology depends 
 on translational symmetry\nand surface states only appear along some direc
 tion\, usually orthogonal to cleaving planes.\nThis makes it in general ha
 rd to see surface states directly. We present triclinic RhBi2 in [1]\,\na 
 system with only bulk inversion symmetry\, as a natural platform to study 
 weak\ntopology as the surface states live on the cleaving planes. These su
 rface states\nare studied using APRES\, DFT and an effective model\, from 
 which we find that in addition\nto topology\, the system also displays a v
 an Hove singularity close to the Fermi energy.\nThis combination of effect
 s makes the material a very promising platform to study\nnovel quantum eff
 ects.\n\n\n[1] Discovery of a weak topological insulating state and van Ho
 ve singularity in triclinic RhBi2\, Kyungchan Lee\, et al. arXiv:2009.1250
 2\n\nJoin Zoom Meeting:\n* https://bham-ac-uk.zoom.us/j/85702415099?pwd=VT
 h5aFZ4Sm9Nc1dxZXYwelJpc1JtZz09\n* Meeting ID: 857 0241 5099\n* Passcode: 5
 01623
LOCATION:Zoom
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