Triggering One-Dimensional Phase Transition with Defects at the Graphene Zigzag Edge

Nano Letters
Qingming Deng, Jiong Zhao

Abstract

One well-known argument about a one-dimensional (1D) system is that 1D phase transition at finite temperature cannot exist even though this concept depends on conditions such as range of interaction, external fields, and periodicity. Therefore, 1D systems usually have random fluctuations with intrinsic domain walls arising that naturally bring disorder during transition. Herein, we introduce a real 1D system in which artificially created defects can induce a well-defined 1D phase transition. The dynamics of structural reconstructions at graphene zigzag edges are examined by in situ aberration-corrected transmission electron microscopy. Combined with an in-depth analysis by ab initio simulations and quantum chemical molecular dynamics, the complete defect induced 1D phase transition dynamics at graphene zigzag edge is clearly demonstrated and understood on the atomic scale. Further, following this phase transition scheme, graphene nanoribbons (GNR) with different edge symmetries can be fabricated and, according to our electronic structure and quantum transport calculations, a metal-insulator-semiconductor transition for ultrathin GNRs is proposed.

References

Dec 15, 1996·Physical Review. B, Condensed Matter·K NakadaM S Dresselhaus
Oct 23, 2004·Science·K S NovoselovA A Firsov
Jun 15, 2007·The Journal of Physical Chemistry. a·B AradiTh Frauenheim
Jun 4, 2008·Physical Review Letters·Zuanyi LiWenhui Duan
Oct 15, 2008·Physical Review Letters·Pekka KoskinenHannu Häkkinen
Oct 15, 2008·Physical Review Letters·Tobias WassmannFrancesco Mauri
Mar 28, 2009·Science·Xiaoting JiaMildred S Dresselhaus
Apr 28, 2009·Physical Review Letters·Wang YaoQian Niu
Nov 26, 2010·Nanoscale·Xiaoting JiaMildred S Dresselhaus
Nov 2, 2013·Nature Communications·Kwanpyo KimA Zettl
Oct 22, 2014·Proceedings of the National Academy of Sciences of the United States of America·Jiong ZhaoMark H Rümmeli
Oct 24, 2014·Nano Letters·Jamie H WarnerKazu Suenaga
Feb 14, 2015·Physical Chemistry Chemical Physics : PCCP·Sherif Abdulkader TawfikC Stampfl

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Citations

Mar 20, 2019·Advanced Science·Yao XiaoLei Fu
Apr 17, 2020·The Journal of Physical Chemistry Letters·Da LiFeng Ding

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