Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs

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Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs. / Szirmai, Peter; Fabian, Gabor; Dora, Balazs et al.
In: physica status solidi (b), Vol. 248, No. 11, 01.11.2011, p. 2688-2691.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Szirmai, P, Fabian, G, Dora, B, Koltai, J, Zolyomi, V, Kurti, J, Nemes, NM, Forro, L & Simon, F 2011, 'Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs', physica status solidi (b), vol. 248, no. 11, pp. 2688-2691. https://doi.org/10.1002/pssb.201100191

APA

Szirmai, P., Fabian, G., Dora, B., Koltai, J., Zolyomi, V., Kurti, J., Nemes, N. M., Forro, L., & Simon, F. (2011). Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs. physica status solidi (b), 248(11), 2688-2691. https://doi.org/10.1002/pssb.201100191

Vancouver

Szirmai P, Fabian G, Dora B, Koltai J, Zolyomi V, Kurti J et al. Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs. physica status solidi (b). 2011 Nov 1;248(11):2688-2691. doi: 10.1002/pssb.201100191

Author

Szirmai, Peter ; Fabian, Gabor ; Dora, Balazs et al. / Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs. In: physica status solidi (b). 2011 ; Vol. 248, No. 11. pp. 2688-2691.

Bibtex

@article{d5a1786ef9164adeb5dd1d46519eee10,

title = "Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs",

abstract = "Electron spin resonance (ESR) spectroscopy is an important tool to characterize the ground state of conduction electrons and to measure their spin-relaxation times. Observing ESR of the itinerant electrons is thus of great importance in graphene and in single-wall carbon nanotubes. Often, the identification of CESR signal is based on two facts: the apparent asymmetry of the ESR signal (known as a Dysonian lineshape) and on the temperature independence of the ESR signal intensity. We argue that these are insufficient as benchmarks and instead the ESR signal intensity (when calibrated against an intensity reference) yields an accurate characterization. We detail the method to obtain the density of states from an ESR signal, which can be compared with theoretical estimates. We demonstrate the success of the method for K doped graphite powder. We give a benchmark for the observation of ESR in graphene.",

keywords = "carbon nanotubes, electron spin resonance , graphene , Pauli susceptibility , spin-decoherence , spintronics , spin life-time",

author = "Peter Szirmai and Gabor Fabian and Balazs Dora and Janos Koltai and Viktor Zolyomi and Jeno Kurti and Nemes, {Norbert M.} and Laszlo Forro and Ferenc Simon",

year = "2011",

month = nov,

day = "1",

doi = "10.1002/pssb.201100191",

language = "English",

volume = "248",

pages = "2688--2691",

journal = "physica status solidi (b)",

issn = "0370-1972",

publisher = "Wiley-VCH Verlag",

number = "11",

}

RIS

TY - JOUR

T1 - Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs

AU - Szirmai, Peter

AU - Fabian, Gabor

AU - Dora, Balazs

AU - Koltai, Janos

AU - Zolyomi, Viktor

AU - Kurti, Jeno

AU - Nemes, Norbert M.

AU - Forro, Laszlo

AU - Simon, Ferenc

PY - 2011/11/1

Y1 - 2011/11/1

N2 - Electron spin resonance (ESR) spectroscopy is an important tool to characterize the ground state of conduction electrons and to measure their spin-relaxation times. Observing ESR of the itinerant electrons is thus of great importance in graphene and in single-wall carbon nanotubes. Often, the identification of CESR signal is based on two facts: the apparent asymmetry of the ESR signal (known as a Dysonian lineshape) and on the temperature independence of the ESR signal intensity. We argue that these are insufficient as benchmarks and instead the ESR signal intensity (when calibrated against an intensity reference) yields an accurate characterization. We detail the method to obtain the density of states from an ESR signal, which can be compared with theoretical estimates. We demonstrate the success of the method for K doped graphite powder. We give a benchmark for the observation of ESR in graphene.

AB - Electron spin resonance (ESR) spectroscopy is an important tool to characterize the ground state of conduction electrons and to measure their spin-relaxation times. Observing ESR of the itinerant electrons is thus of great importance in graphene and in single-wall carbon nanotubes. Often, the identification of CESR signal is based on two facts: the apparent asymmetry of the ESR signal (known as a Dysonian lineshape) and on the temperature independence of the ESR signal intensity. We argue that these are insufficient as benchmarks and instead the ESR signal intensity (when calibrated against an intensity reference) yields an accurate characterization. We detail the method to obtain the density of states from an ESR signal, which can be compared with theoretical estimates. We demonstrate the success of the method for K doped graphite powder. We give a benchmark for the observation of ESR in graphene.

KW - carbon nanotubes

KW - electron spin resonance

KW - graphene

KW - Pauli susceptibility

KW - spin-decoherence

KW - spintronics

KW - spin life-time

U2 - 10.1002/pssb.201100191

DO - 10.1002/pssb.201100191

M3 - Journal article

VL - 248

SP - 2688

EP - 2691

JO - physica status solidi (b)

JF - physica status solidi (b)

SN - 0370-1972

IS - 11

ER -

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