Publisher's Note: Average density of states in disordered graphene systems [Phys. Rev. B<b>77</b>, 195411 (2008)]

Wu, Shangduan; Jing, Lei; Li, Qunxiang; Shi, Qinwei; Chen, Jie; Su, Haibin; Wang, Xiaoping; Yang, Jinlong

doi:10.1103/physrevb.77.249901

Cited by 31 publications

(55 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3(a). The appearance of midgap states in disordered graphene's ADOS, although predicted by a large number of theoretical studies [5][6][7][8][9][10]17,21,25,42,57], has never been clearly demonstrated by other experimental methods. Quantum capacitance measurement of graphene devices can be used to study the overall effect of resonant impurities with different impurity concentrations n i on a large scale.…”

Section: Resultsmentioning

confidence: 99%

“…Previous scanning tunneling spectroscopy studies have shown that robust LDOS peaks appear near a single vacancy in graphene or in hydrogenated graphene [12,13,16] These resonant impurities, however, have not been successfully detected in transport measurements because their transport behavior always mimics that of charged impurities at finite densities [9,10,[18][19][20][21][22][23][24]. Different scattering details are involved, and thus no clear resonant feature can be observed in the conductivity [8][9][10]21,22,25]. Alternative methods for effective measurements of the mesoscopic physical behavior of disordered graphene are required, which are essential for probing these resonant impurities and their effects on the average DOS (ADOS) at a much larger scale.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Detection of resonant impurities in graphene by quantum capacitance measurement

et al. 2014

View full text Add to dashboard Cite

We investigated Ag-adatom-induced resonant impurities of graphene by quantum capacitance measurement. Different from charged impurities and other conventional resonant impurities, Ag atoms form very weak covalent bonds with graphene. The Ag-adatom-induced resonant peak as measured by quantum capacitance grows more intense at cryogenic temperatures, at higher impurity concentrations, and in stronger magnetic fields, in accordance with our theoretical calculations. The appearance of resonant states and the split of the zeroth Landau level for Ag-adsorbed graphene are manifestations of the formation of a flat impurity band near the Dirac point.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Detection of resonant impurities in graphene by quantum capacitance measurement

et al. 2014

View full text Add to dashboard Cite

show abstract

“…It is possible to accelerate this approach using recursive Green's function methods, 13,18 even though complications arise from the presence of the overlap matrix.…”

Section: Analytical Green's Function Approachmentioning

confidence: 99%

“…12,13 A simple, orthogonal nearest-neighbor tight-binding model is capable of qualitatively modeling several impurity-related properties. 15,16,18 The implicit assumptions, such as perfect electron-hole symmetry, are problematic, however. This deficiency may be partly relieved by the inclusion of next-nearest-neighbor terms 17 or overlap corrections.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Self-consistent tight-binding model of B and N doping in graphene

Pedersen

2013

Phys. Rev. B

View full text Add to dashboard Cite

Boron and nitrogen substitutional impurities in graphene are analyzed using a self-consistent tight-binding approach. An analytical result for the impurity Green's function is derived taking broken electron-hole symmetry into account and validated by comparison to numerical diagonalization. The impurity potential depends sensitively on the impurity occupancy, leading to a self-consistency requirement. We solve this problem using the impurity Green's function and determine the self-consistent local density of states at the impurity site and, thereby, identify acceptor and donor energy resonances.

show abstract

Dependence on Ecosystem Goods and Services: A Case Study on East Kolkata Wetlands, West Bengal, India

Kundu

Chakraborty

2017

Wetland Science

View full text Add to dashboard Cite

We present a theoretical investigation of the electronic specific heat (ESH) at constant volume (Cv) of single-helical proteins modeled within the tight-binding (TB) framework. We study the effects of helical symmetry, long-range hopping, environment and biological defects on thermal properties. We employ a general TB model to incorporate all parameters relevant to the helical structure of the protein. In order to provide additional insights into our results for the ESH, we also study the electronic density of states for various disorder strengths. We observe that the variation of the specific heat with disorder is very different in low and high temperature regimes, though the variation of ESH with temperature possesses a universal pattern upon varying disorder strengths related to environmental effects. Lastly, we propose an interesting application of the ESH spectra of proteins. We show that by studying the ESH of single-helical proteins, one can distinguish a defective sample from a pure one. This observation can serve as the basis of a screening technique that can be applied prior to a whole genome testing, thereby saving valuable time & resources.

show abstract

Publisher's Note: Average density of states in disordered graphene systems [Phys. Rev. B77, 195411 (2008)]

Cited by 31 publications

References 0 publications

Detection of resonant impurities in graphene by quantum capacitance measurement

Detection of resonant impurities in graphene by quantum capacitance measurement

Self-consistent tight-binding model of B and N doping in graphene

Dependence on Ecosystem Goods and Services: A Case Study on East Kolkata Wetlands, West Bengal, India

Contact Info

Product

Resources

About