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SUMMARY:Tuning the Electronic Phases of Graphene Nanoribbons - Michele Piz
 zochero (University of Bath)
DTSTART:20241031T140000Z
DTEND:20241031T153000Z
UID:TALK221806@talks.cam.ac.uk
CONTACT:Bo Peng
DESCRIPTION:Graphene nanoribbons (GNRs) are a fascinating class of quasi-o
 ne-dimensional semiconductors consisting of nanometer-wide strips of hexag
 onally bonded carbon atoms [1]. Recent advancements in fabrication techniq
 ues enabled the realization of atomically precise GNRs with diverse edge g
 eometries\, widths\, and complex nanoarchitectures [2]. In this talk\, I w
 ill present graphene nanoribbons as a promising platform for controlling a
 nd manipulating unconventional electronic phases\, drawing from both ab in
 itio and model Hamiltonian calculations. First\, I will explore the emerge
 nce of topological phases in armchair-edged nanoribbons induced by lattice
  deformations [3]. Second\, I will demonstrate the formation of half-semi 
 metallic phases in zigzag-edged nanoribbons upon incorporation into a late
 ral heterostructure [4\, 5]. Third\, I will discuss the development of ult
 ra-flat bands and π-electron magnetism in chevron-edged graphene nanoribb
 ons under an external electric field [6]. These findings may open new poss
 ibilities for engineering quantum phases in one-dimensional crystals\, wit
 h potential applications in spintronics and related device concepts. \n\n[
 1] O. V. Yazyev\, Account of Chemical Research 46\, 2319 (2013).\n\n[2] A.
  Narita\, K. Müllen\, Advanced Materials 32\, 2001893 (2020).\n\n[3] N. V
 . Tepliakov\, J\, Lischner\, E. Kaxiras\, A. A. Mostofi\, M. Pizzochero\, 
 Physical Review Letters 130\, 026401 (2023).\n\n[4] N. V. Tepliakov\, R. M
 a\, J. Lischner\, E. Kaxiras\, A. A. Mostofi\, M. Pizzochero\, Nano Letter
 s 23\, 6698 (2024).\n\n[5] M. Pizzochero\, N. V. Tepliakov\, J. Lischner\,
  A. A. Mostofi\, E. Kaxiras\, Nano Letters 24\, 6521 (2024).\n\n[6] R. Ma\
 , N. V. Tepliakov\, A. A. Mostofi\, M. Pizzochero\, in preparation.
LOCATION:TCM Seminar Room
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