Carbon-nanotube-based electronics offers significant potential as a nanoscale alternative to silicon-based devices for molecular electronics technologies. Here, we show evidence for a dramatic electrical switching behaviour in a Y-junction carbon-nanotube1,2,3 morphology. We observe an abrupt modulation of the current from an on- to an off-state, presumably mediated by defects and the topology of the junction. The mutual interaction of the electron currents4 in the three branches of the Y-junction is shown to be the basis for a potentially new logic device. This is the first time that such switching and logic functionalities have been experimentally demonstrated in Y-junction nanotubes without the need for an external gate. A class of nanoelectronic architecture and functionality, which extends well beyond conventional field-effect transistor technologies5,6, is now possible.
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Zhou, D. & Seraphin, S. Complex branching phenomena in the growth of carbon nanotubes. Chem. Phys. Lett. 238, 286–289 (1995).
Li, W. Z., Wen, J. G. & Ren, Z. F. Straight carbon nanotube Y junctions. Appl. Phys. Lett. 79, 1879–1881 (2001).
Satishkumar, B. C., Thomas, P. J., Govindaraj, A. & Rao, C. N. R. Y-junction carbon nanotubes. Appl. Phys. Lett. 77, 2530–2532 (2000).
Xu, H. Q. Electrical properties of three-terminal ballistic junctions. Appl. Phys. Lett. 78, 2064–2066 (2001).
Xu, H. Q. et al. Novel nanoelectronic triodes and logic devices with TBJs. IEEE Electron Dev. Lett. 25, 164–166 (2004).
Baughman, R. H., Zakhidov, A. A. & de Heer, W. A. Carbon nanotubes-the route toward applications. Science 297, 787–792 (2002).
Saito, R., Dresselhaus, G. & Dresselhaus, M. S. Physical Properties of Carbon Nanotubes (Imperial College Press, London, 1998).
Forro, L. & Schonenberger, C. in Carbon Nanotubes-Topics in Applied Physics (ed. Avouris, P.) (Springer, Heidelberg, 2001).
Kim, P., Shi, L., Majumdar, A. & McEuen, P. L. Thermal transport measurements of individual multiwalled nanotubes. Phys. Rev. Lett. 87, 215502 (2001).
Collins, P. G., Hersam, M., Arnold, M., Martel, R. & Avouris, P. Current saturation and electrical breakdown in mutiwalled carbon nanotubes. Phys. Rev. Lett. 86, 3128–3131 (2001).
Martel, R., Schmidt, T., Shea, H. R., Hertel, T. & Avouris, P. Single- and multi-wall carbon nanotube field-effect transistors. Appl. Phys. Lett. 73, 2447–2449 (1998).
Tans, S. J., Verschueren, A. R. M. & Dekker, C. Room-temperature transistor based on a single carbon nanotube. Nature 393, 49–52 (1998).
Javey, A., Guo, J., Wang, Q., Lundstrom, M. & Dai, H. Ballistic carbon nanotube field-effect transistors. Nature 424, 654–657 (2003).
Postma, H. W. C., Teepen, T., Yao, Z., Grifoni, M. & Dekker, C. Carbon nanotube single-electron transistors at room temperature. Science 293, 76–79 (2001).
Gothard, N. et al. Controlled growth of Y-junction nanotubes using Ti-doped vapor catalyst. Nano Lett. 4, 213–217 (2004).
Shorubalko, I., Xu, H. Q., Omling, P. & Samuelson, L. Tunable nonlinear current-voltage characteristics of three-terminal ballistic nanojunctions. Appl. Phys. Lett. 83, 2369–2371 (2003).
Shorubalko, I. et al. A novel frequency-multiplication device based on three-terminal ballistic junction. IEEE Electron Dev. Lett. 23, 377–379 (2002).
Song, A. M. et al. Nonlinear electron transport in an asymmetric microjunction: A ballistic rectifier. Phys. Rev. Lett. 80, 3831–3834 (1998).
Palm, T. & Thylen, L. Designing logic functions using an electron waveguide Y-branch switch. J. Appl. Phys. 79, 8076–8081 (1996).
Andriotis, A. N., Menon, M., Srivastava, D. & Chernozatonski, L. Transport properties of single-wall carbon nanotube Y-junctions. Phys. Rev. B 65, 165416 (2002).
Csontos, D. & Xu, H. Q. Quantum effects in the transport properties of nanoelectronic three-terminal Y-junction devices. Phys. Rev. B 67, 235322 (2003).
Andriotis, A. N., Srivastava, D. & Menon, M. Comment on “Intrinsic electron transport properties of carbon nanotube Y-junctions”. Appl. Phys. Lett. 83, 1674–1675 (2003).
Tian, W. et al. Conductance spectra of molecular wires. J. Chem. Phys. 109, 2874–2882 (1998).
Heinze, S. et al. Carbon nanotubes as Schottky barrier transistors. Phys. Rev. Lett. 89, 106801 (2002).
Crespi, V. H., Chopra, N. G., Cohen, M. L., Zettl, A. & Louie, S. G. Anisotropic electron-beam damage and the collapse of carbon nanotubes. Phys. Rev. B 54, 5927–5931 (1996).
Banhart, F. Irradiation effects in carbon nanostructures. Rep. Prog. Phys. 62, 1181–1221 (1999).
Gopal, V. et al. Rapid prototyping of site-specific nanocontacts by electron and ion beam assisted direct-write nanolithography. Nano Lett. 4, 2059–2063 (2004).
Bachtold, A. et al. Contacting carbon nanotubes selectively with low-ohmic contacts for four-probe electric measurements. Appl. Phys. Lett. 73, 274–276 (1998).
Andriotis, A. N., Menon, M., Srivastava, D. & Chernozatonski, L. Rectification properties of carbon nanotube “Y-junctions”. Phys. Rev. Lett. 87, 066802 (2001).
Papadapoulos, C., Rakitin, A., Li, J., Vedeneev, A. S. & Xu, J. M. Electronic transport in Y-junction carbon nanotubes. Phys. Rev. Lett. 85, 3476–3479 (2000).
P.R.B. acknowledges useful discussions with M. Di Ventra and J. Lagerkvist. We also thank graduate students N. Gothard and J. Gaillard for synthesizing the Y-junction nanotubes, and P. Yu who set up the LabView programs for data acquisition. We acknowledge the support of the work by NSF-NIRTs under Grant numbers DMI-0210559, DMI-0303790, DMI-0304019 and University of California Discovery Fund under Grant No. ele02-10133/Jin.
The authors declare no competing financial interests.
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Bandaru, P., Daraio, C., Jin, S. et al. Novel electrical switching behaviour and logic in carbon nanotube Y-junctions. Nature Mater 4, 663–666 (2005). https://doi.org/10.1038/nmat1450
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