PMID- 33819041
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210414
IS  - 1530-6992 (Electronic)
IS  - 1530-6984 (Linking)
VI  - 21
IP  - 7
DP  - 2021 Apr 14
TI  - Topological Surface State in Epitaxial Zigzag Graphene Nanoribbons.
PG  - 2876-2882
LID - 10.1021/acs.nanolett.0c05013 [doi]
AB  - Protected and spin-polarized transport channels are the hallmark of topological 
      insulators, coming along with an intrinsic strong spin-orbit coupling. Here we 
      identified such corresponding chiral states in epitaxially grown zigzag graphene 
      nanoribbons (zz-GNRs), albeit with an extremely weak spin-orbit interaction. 
      While the bulk of the monolayer zz-GNR is fully suspended across a SiC facet, the 
      lower edge merges into the SiC(0001) substrate and reveals a surface state at the 
      Fermi energy, which is extended along the edge and splits in energy toward the 
      bulk. All of the spectroscopic details are precisely described within a tight 
      binding model incorporating a Haldane term and strain effects. The concomitant 
      breaking of time-reversal symmetry without the application of external magnetic 
      fields is supported by ballistic transport revealing a conduction of G = e(2)/h.
FAU - Nguyen, Thi Thuy Nhung
AU  - Nguyen TTN
AD  - Institute for Physics, Technical University of Chemnitz, 09126 Chemnitz, Germany.
FAU - de Vries, Niels
AU  - de Vries N
AD  - Faculty of Applied Physics, Eindhoven University of Technology, Groene Loper 19, 
      5612 AP Eindhoven, The Netherlands.
FAU - Karakachian, Hrag
AU  - Karakachian H
AD  - Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 
      Stuttgart, Germany.
FAU - Gruschwitz, Markus
AU  - Gruschwitz M
AD  - Institute for Physics, Technical University of Chemnitz, 09126 Chemnitz, Germany.
FAU - Aprojanz, Johannes
AU  - Aprojanz J
AD  - Institute for Physics, Technical University of Chemnitz, 09126 Chemnitz, Germany.
FAU - Zakharov, Alexei A
AU  - Zakharov AA
AUID- ORCID: 0000-0002-1269-6813
AD  - MAX IV Laboratory and Lund University, 221 00 Lund, Sweden.
FAU - Polley, Craig
AU  - Polley C
AD  - MAX IV Laboratory and Lund University, 221 00 Lund, Sweden.
FAU - Balasubramanian, Thiagarajan
AU  - Balasubramanian T
AD  - MAX IV Laboratory and Lund University, 221 00 Lund, Sweden.
FAU - Starke, Ulrich
AU  - Starke U
AUID- ORCID: 0000-0003-1153-1862
AD  - Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 
      Stuttgart, Germany.
FAU - Flipse, Cornelis F J
AU  - Flipse CFJ
AD  - Faculty of Applied Physics, Eindhoven University of Technology, Groene Loper 19, 
      5612 AP Eindhoven, The Netherlands.
FAU - Tegenkamp, Christoph
AU  - Tegenkamp C
AUID- ORCID: 0000-0003-0453-0765
AD  - Institute for Physics, Technical University of Chemnitz, 09126 Chemnitz, Germany.
LA  - eng
PT  - Journal Article
DEP - 20210405
PL  - United States
TA  - Nano Lett
JT  - Nano letters
JID - 101088070
SB  - IM
OTO - NOTNLM
OT  - STM
OT  - ballistic transport channel
OT  - tight binding
OT  - topological surface state
OT  - zigzag graphene nanoribbons
EDAT- 2021/04/06 06:00
MHDA- 2021/04/06 06:01
CRDT- 2021/04/05 17:09
PHST- 2021/04/06 06:00 [pubmed]
PHST- 2021/04/06 06:01 [medline]
PHST- 2021/04/05 17:09 [entrez]
AID - 10.1021/acs.nanolett.0c05013 [doi]
PST - ppublish
SO  - Nano Lett. 2021 Apr 14;21(7):2876-2882. doi: 10.1021/acs.nanolett.0c05013. Epub 
      2021 Apr 5.