Structure and dynamics of solid<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>60</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Zhang, Q.-M.; Yi, Jae‐Yel; Bernholc, J.

doi:10.1103/physrevlett.66.2633

Cited by 210 publications

(29 citation statements)

References 16 publications

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“…The intermolecular distance and interactions may affect the orbital overlap of the p electrons in OSs 40 , which determine the transport efficiency of the charge carriers. Previous studies have also reported that temperature affects the lattice fluctuations 41,42 and intramolecular interactions 30,43 of C 60 , which may cause variations in the s-orbital. The s-orbital affects the SDT length in organic OSs 38 .…”

Section: Resultsmentioning

confidence: 99%

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Observation of a large spin-dependent transport length in organic spin valves at room temperature

et al. 2013

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The integration of organic semiconductors and magnetism has been a fascinating topic for fundamental scientific research and future applications in electronics, because organic semiconductors are expected to possess a large spin-dependent transport length based on weak spin-orbit coupling and weak hyperfine interaction. However, to date, this length has typically been limited to several nanometres at room temperature, and a large length has only been observed at low temperatures. Here we report on a novel organic spin valve device using C 60 as the spacer layer. A magnetoresistance ratio of over 5% was observed at room temperature, which is one of the highest magnetoresistance ratios ever reported. Most importantly, a large spin-dependent transport length of approximately 110 nm was experimentally observed for the C 60 layer at room temperature. These results provide insights for further understanding spin transport in organic semiconductors and may strongly advance the development of spin-based organic devices.

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Section: Resultsmentioning

confidence: 99%

“…The s-orbital affects the SDT length in organic OSs 38 . Moreover, the C 60 molecule exhibits a series of energy levels 41 . The evaporation temperature may affect the distribution of the energy levels in a C 60 layer.…”

Section: Resultsmentioning

confidence: 99%

Observation of a large spin-dependent transport length in organic spin valves at room temperature

et al. 2013

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“…Though this model is clearly oversimplified in comparison with other microscopic calculations [14][15][16], it provides a direct estimate of the electron self-consistent potential and density. The calculated ionization potential are reasonably good and differ only by ---0.5 eV from the results of more sophisticated calculations and from expeeriment.…”

Section: Resultsmentioning

confidence: 97%

“…This standard procedure yields the RPA eigenfrequencies co, and the corresponding transition probabilities I(0[D[n5 [ 2 from which the strength function (4) is obtained. We have discretized the single-particle spectrum, obtained by solving (15), in a spherical box of radius 2.5 R ( R = 3 . 5 A is the jellium mean radius).…”

mentioning

confidence: 99%

π plasmon modes inC 60 clusters

Giai

Lipparini

1993

Z Phys D - Atoms, Molecules and Clusters

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“…Another well-known plane-wave implementation of LDA techniques is that of Car and Parrinello [48], which uses atomic forces computed directly from the electronic states to perform molecular dynamics calculations. An early application of this method to the dynamics of C 60 is given in [49]. A plane wave basis necessitates the use of periodic boundary conditions, and for isolated molecules the associated supercell is simply taken to be much larger than the molecule.…”

Section: Modementioning

confidence: 99%

Vibrational spectroscopy of C60

Menéndez¹,

Page²

Topics in Applied Physics

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The fullerene era was started in 1985 with the discovery of the stable C 60 cluster and its interpretation as a cage structure with the familiar shape of a soccer ball [1]. An explosive growth in fullerene research was triggered in 1990 by the development of a method to produce fullerenes in bulk quantities [2]. Subsequently, the structural, electronic, and vibrational properties of many fullerenes have been studied in detail. The importance and potential of this new class of materials is exemplified by the discovery of intermediatetemperature superconductivity in doped C 60 [3]. Carbon nanotubes, a novel form of carbon which combines the properties of graphite and fullerenes, were discovered in 1991 [4]. Because of their intriguing properties and potential for applications, nanotubes are currently the subject of very intense research. Polymerization of C 60 molecules, particularly by photoexcitation [5] but by several other techniques as well, also results in a variety of interesting new structures, which contain both 4-coordinated and 3-coordinated carbon atoms [6]. The burgeoning field of fullerene research has been reviewed by several authors [7][8][9][10][11][12], most notably by Dresselhaus et al. [11] in an extensive monograph that appeared in 1996.In spite of the rapidly increasing interest in new forms of fullerenes, icosahedral C 60 , the "most beautiful molecule" [13], remains the focus of vigorous research as the prototype fullerene system. The present chapter concerns the vibrational structure of C 60 and the efforts to unravel its details using spectroscopic techniques. This remains a work in progress, but we hope to show that a look at the existing body of experimental and theoretical research from the broader perspective of an extended article provides a deeper understanding of the vibrational properties of C 60 .

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Structure and dynamics of solidC60

Cited by 210 publications

References 16 publications

Observation of a large spin-dependent transport length in organic spin valves at room temperature

Observation of a large spin-dependent transport length in organic spin valves at room temperature

π plasmon modes inC 60 clusters

Vibrational spectroscopy of C60

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