Visualizing atomic-scale negative differential resistance in bilayer graphene.

@article{Kim2013VisualizingAN,
  title={Visualizing atomic-scale negative differential resistance in bilayer graphene.},
  author={Keun Su Kim and Tae-Hwan Kim and Andrew Leigh Walter and Thomas Seyller and Han Woong Yeom and Eli Rotenberg and Aaron Bostwick},
  journal={Physical review letters},
  year={2013},
  volume={110 3},
  pages={
          036804
        }
}
We investigate the atomic-scale tunneling characteristics of bilayer graphene on silicon carbide using the scanning tunneling microscopy. The high-resolution tunneling spectroscopy reveals an unexpected negative differential resistance (NDR) at the Dirac energy, which spatially varies within the single unit cell of bilayer graphene. The origin of NDR is explained by two near-gap van Hove singularities emerging in the electronic spectrum of bilayer graphene under a transverse electric field… 
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References

SHOWING 1-10 OF 60 REFERENCES
Nature
  • R. Rosenfeld
  • Medicine
    Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery
  • 2009
TLDR
I am writing with a simple plea to balance the voluminous articles about treatment in your journal with a modicum of information about nature and caring effects to rekindle the perception of physicians as healers, not only treaters, who relish the gifts of nature, and foster the humanistic aspect of medicine that has thrived for millennia.
疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1(PfPMP1)与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员,通过启动转录不同的var基因变异体为抗原变异提供了分子基础。
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variables
Science 313
  • 951–954
  • 2006
PRL
  • PRL
  • 2013
ACS Nano
  • ACS Nano
  • 2012
Nano Lett
  • Nano Lett
  • 2012
Nat. Nanotechnol
  • Nat. Nanotechnol
  • 2012
  • 2011
  • 2011
...
1
2
3
4
5
...