Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T09:48:12.015Z Has data issue: false hasContentIssue false
  • English
  • Français

Molecular Magnet Induced Transformative Effects in Molecular Spintronics Devices: A Monte Carlo Study

Published online by Cambridge University Press:  10 April 2013

Christopher D’Angelo  and
Pawan Tyagi
Christopher D’Angelo
Affiliation:
Department of Mathematics and Statistics, University of the District of Columbia, Washington DC 20008, USA
Pawan Tyagi
Affiliation:
Department of Civil and Mechanical Engineering, University of the District of Columbia, Washington DC 20008, USA
Get access

Abstract

Molecular spintronics devices (MSDs) are capable of harnessing the controllable transport and magnetic properties of molecular device elements and are highly promising candidates for revolutionizing computer logic and memory. A MSD is typically produced by placing magnetic molecule(s) between the two ferromagnetic electrodes. Recent experimental studies show that the molecules produced unprecedented strong exchange couplings between the two ferromagnets, leading to intriguing magnetic and transport properties in a MSD. Future development of MSDs will critically depend on obtaining an in-depth understanding of the molecule induced exchange coupling and its impact on MSD’s switchability and temperature stability. However, the large size of MSD systems and unsuitable device designs are the two biggest hurdles in theoretical and experimental studies of magnetic attributes produced by molecules in a MSD. This research theoretically studies the MSD by performing Monte Carlo Simulation (MCS) studies, which have the capacity to tackle large systems- such as MSD based on magnetic tunnel junction (MTJ) test bed. The MTJ based MSD has the distinctive advantage that MTJ test bed can be subjected to experimental magnetic characterizations before and after transforming it into a MSD by bridging the molecules of interest between the two metal electrodes of a MTJ. Hence the result of our MCS can be verified experimentally.

Keywords

magnetoresistance (magnetic)nanoscalephase equilibria
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1508: Symposium BB – Recent Advances in Optical, Acoustic and Other Emerging Metamaterials , 2013 , mrsf12-1508-bb05-04
Copyright
Copyright © Materials Research Society 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Coronado, E. and Epsetin, A. J., “Molecular spintronics and quantum computing,” J. Mater. Chem., vol. 19, pp. 1670–1671, 2009.Google Scholar
Bogani, L. and Wernsdorfer, W., “Molecular spintronics using single-molecule magnets,” Nat. Mater., vol. 7, pp. 179–186, Mar 2008.10.1038/nmat2133CrossRefGoogle ScholarPubMed
Pasupathy, A. N., Bialczak, R. C., Martinek, J., Grose, J. E., Donev, L. A. K., McEuen, P. L., et al. ., “The Kondo effect in the presence of ferromagnetism,” Science, vol. 306, pp. 86–89, Oct 1 2004.10.1126/science.1102068CrossRefGoogle ScholarPubMed
Heersche, H. B., de Groot, Z., Folk, J. A., van der Zant, H. S. J., Romeike, C., Wegewijs, M. R., et al. ., “Electron transport through single Mn-12 molecular magnets,” Phys. Rev. Lett., vol. 96, p. 206801, May 26 2006.10.1103/PhysRevLett.96.206801CrossRefGoogle Scholar
Liang, W. J., Shores, M. P., Bockrath, M., Long, J. R., and Park, H., “Kondo resonance in a single-molecule transistor,” Nature, vol. 417, pp. 725–729, Jun 13 2002.10.1038/nature00790CrossRefGoogle Scholar
Jurow, M., Schuckman, A. E., Batteas, J. D., and Drain, C. M., “Porphyrins as molecular electronic components of functional devices,” Coord. Chem. Rev., vol. 254, pp. 2297–2310, Oct 2010.10.1016/j.ccr.2010.05.014CrossRefGoogle ScholarPubMed
Li, D. F., Parkin, S., Wang, G. B., Yee, G. T., Clerac, R., Wernsdorfer, W., et al. ., “An S=6 cyanide-bridged octanuclear (Fe4Ni4II)-Ni-III complex that exhibits slow relaxation of the magnetization,” J. Am. Chem. Soc., vol. 128, pp. 4214–4215, Apr 5 2006.10.1021/ja058626iCrossRefGoogle Scholar
Tyagi, P., “Molecular Spin Devices: Current Understanding and New Territories,” Nano, vol. 4, pp. 325–338 2009.10.1142/S1793292009001903CrossRefGoogle Scholar
Tyagi, P., “Multilayer edge molecular electronics devices,” J. Mater. Chem., vol. 21, pp. 4733–4742, 2011.10.1039/c0jm03291cCrossRefGoogle Scholar
Chylarecka, D., Kim, T. K., Tarafder, K., Muller, K., Godel, K., Czekaj, I., et al. ., “Indirect Magnetic Coupling of Manganese Porphyrin to a Ferromagnetic Cobalt Substrate,” J. Phys. Chem. C, vol. 115, pp. 1295–1301, Feb 2011.10.1021/jp106822sCrossRefGoogle Scholar
Newman, M. E. and Barkema, G. T., Monte Carlo Methods in Statistical Physics. Oxford: Clarendon Press, 1999.Google Scholar
Tyagi, P., “Molecule induced strong exchange coupling between ferromagnetic electrodes of a magnetic tunnel junction,” arXiv:1110.0885v1 [cond-mat.mtrl-sci], p., 2011.Google Scholar