Nanotubes and nanowires with both elemental1,2 (carbon or silicon) and multi-element3,4,5 compositions (such as compound semiconductors or oxides), and exhibiting electronic properties ranging from metallic to semiconducting, are being extensively investigated for use in device structures designed to control electron charge6,7,8. However, another important degree of freedom—electron spin, the control of which underlies the operation of ‘spintronic’ devices9—has been much less explored. This is probably due to the relative paucity of nanometre-scale ferromagnetic building blocks10 (in which electron spins are naturally aligned) from which spin-polarized electrons can be injected. Here we describe nanotubes of vanadium oxide (VOx), formed by controllable self-assembly11, that are ferromagnetic at room temperature. The as-formed nanotubes are transformed from spin-frustrated semiconductors to ferromagnets by doping with either electrons or holes, potentially offering a route to spin control12 in nanotube-based heterostructures13.
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Iijima, S. Helical microtubules of graphitic carbon. Nature 354, 56–58 (1991)
Cui, Y. & Lieber, C. M. Functional nanoscale electronic devices assembled using silicon nanowire bulding blocks. Science 291, 851–853 (2001)
Tenne, R., Margulis, L., Genut, M. & Hodes, G. Polyhedral and cylindrical structures of tungsten disulphide. Nature 360, 444–446 (1992)
Rosenfeld-Hacohen, Y., Grunbaum, E., Tenne, R., Sloan, J. & Hutchison, J. L. Cage structures and nanotubes of NiCl2 . Nature 395, 336–337 (1998)
Remskar, M. et al. Self-assembly of subnanometer-diameter single-wall MoS2 nanotubes. Science 292, 479–481 (2001)
Dekker, C. Carbon nanotubes as molecular quantum wires. Phys. Today 52(5), 22–28 (1999)
Fuhrer, M. S. et al. Crossed nanotube junctions. Science 288, 494–497 (2000)
Derycke, V., Martel, R., Appenzeller, J. & Avouris, Ph. Carbon nanotube inter- and intramolecular logic gates. Nano Lett. 1, 453–456 (2001)
Wolf, S. A. et al. Spintronics: A spin-based electronics vision for the future. Science 294, 1488–1495 (2001)
Hueso, L. & Mathur, N. Dreams of a hollow future. Nature 427, 301–303 (2004)
Krumeich, F. et al. Morphology and topochemical reactions of novel vanadium oxide nanotubes. J. Am Chem. Soc. 121, 8324–8331 (1999)
Tsukagoshi, K., Alphenaar, B. W. & Ago, H. Coherent transport of electron spin in a ferromagnetically contacted carbon nanotube. Nature 401, 572–574 (1999)
Yao, Z., Postma, H. W. Ch., Balents, L. & Dekker, C. Carbon nanotube intramolecular junctions. Nature 402, 273–276 (1999)
Tokura, Y. & Nagaosa, N. Orbital physics in transition-metal oxides. Science 288, 462–468 (2000)
Imada, M., Fujimori, A. & Tokura, Y. Metal-insulator transitions. Rev. Mod. Phys. 70, 1039–1263 (1998)
Levy, P., Leyva, A. G., Troiani, H. E. & Sánchez, R. D. Nanotubes of rare-earth manganese oxides. Appl. Phys. Lett. 83, 5247–5249 (2003)
Zavalij, P. Y. & Whittingham, M. S. Structural chemistry of vanadium oxides with open frameworks. Acta Cryst. B 55, 627–663 (1999)
Mott, N. F. Metal–Insulator Transitions (Taylor & Francis, London, 1974)
Kanada, M. et al. On the magnetic properties of systems with low dimensional linkage of VO5 pyramids. J. Phys. Soc. Jpn 67, 2904–2909 (1998)
Limelette, P. et al. Universality and critical behavior at the Mott transition. Science 302, 89–92 (2003)
Yamauchi, T., Ueda, Y. & Mori, N. Pressure-induced superconductivity in β–Na0.33V2O5 beyond charge ordering. Phys. Rev. Lett. 89, 057002 (2002)
Pickett, W. E. Impact of structure on magnetic coupling in CaV4O9 . Phys. Rev. Lett. 92, 056402 (2004)
Korotin, M. A. et al. Exchange interactions and magnetic properties of the layered vanadates CaV2O5, MgV2O5, CaV3O7, and CaV4O9 . Phys. Rev. Lett. 83, 1387–1390 (1999)
Lumsden, M. D., Sales, B. C., Mandrus, D., Nagler, S. E. & Thompson, J. R. Weak ferromagnetism and field-induced spin reorientation in K2V3O8 . Phys. Rev. Lett. 86, 159–162 (2001)
Onoda, M. & Nishiguchi, N. Crystal structure and spin gap state of CaV2O5 . J. Solid-State Chem. 127, 359–362 (1996)
Dobley, A. et al. Manganese vanadium oxide nanotubes: synthesis, characterization, and electrochemistry. Chem. Mater. 13, 4382–4386 (2001)
Wang, X., Liu, L., Bontchev, R. & Jacobson, A. J. Electrochemical-hydrothermal synthesis and structure determination of a novel layered mixed-valence oxide: BaV7O16·nH2O. J. Chem. Soc. Chem. Commun. 1009–1010 (1998)
Bergström, Ö., Gustasson, T. & Thomas, J. O. Electrochemically lithiated vanadium oxide, Li2V6O13 . Acta Cryst. C 53, 528–530 (1997)
Bertotti, G. Hysteresis in Magnetism (Academic, London, 1998)
Cao, J. et al. Effect of sheet distance on the optical properties of vanadate nanotubes. Chem. Mater. 16, 731–736 (2004)
We thank A. Afzali, K.-S. Cho, C. R. Kagan, F. X. Redl and S. Sun for technical advice, C. A. Feild for chemistry insights, P. Y. Zavalij for his expertise in crystal structures, B. Spivak and A. M. Tsvelik for discussions, and R. Ludeke for his contributions. This work is supported in part by the Defense Advanced Research Project Agency (DARPA).
The authors declare that they have no competing financial interests.
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Krusin-Elbaum, L., Newns, D., Zeng, H. et al. Room-temperature ferromagnetic nanotubes controlled by electron or hole doping. Nature 431, 672–676 (2004). https://doi.org/10.1038/nature02970
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