RT Journal Article
T1 Delocalization of states in two-component superlattices with correlated disorder
A1 Hakobyan, T.
A1 Sedrakyan, D.
A1 Sedrakyan, A.
A1 Gómez, I.
A1 Domínguez-Adame Acosta, Francisco
AB Electron and phonon states in two different models of intentionally disordered superlattices are studied analytically as well as numerically. The localization length is calculated exactly and we found that it diverges for particular energies or frequencies, suggesting the existence of delocalized states for both electrons and phonons. Numerical calculations for the transmission coefficient support the existence of these delocalized states.
PB American Physical Society
SN 1098-0121
YR 2000
FD 2000-05-01
LK https://hdl.handle.net/20.500.14352/59355
UL https://hdl.handle.net/20.500.14352/59355
LA eng
NO 1. P. W. Anderson, Phys. Rev. 109, 1492 (1958); P. W. Anderson, Phys. Rev. B 23, 4828 (1981). 2. N. F. Mott and W. D. Twose, Adv. Phys. 10, 107 (1961). 3. E. Abrahams, P. W. Anderson, D. C. Licciardello, and T. V. Ramakrishnan, Phys. Rev. Lett. 42, 673 (1979). 4. J. M. Ziman, Models of Disorder (Cambridge University Press, London, 1979). 5. J. C. Flores, J. Phys.: Condens. Matter 1, 8471 (1989!. 6D. H. Dunlap, H.-L. Wu, and P. Phillips, Phys. Rev. Lett. 65, 88 (1990). 7. H.-L. Wu and P. Phillips, J. Chem. Phys. 93, 7369 (1990). 8. H.-L. Wu and P. Phillips, Phys. Rev. Lett. 66, 1366 (1991!; H.-L. Wu and P. Phillips, Science 252, 1805 (1991). 9. A. Bovier, J. Phys. A 25, 1021 (1992). 10. S. Gangopadhyay and A. K. Sen, J. Phys.: Condens. Matter 4, 9939 (1992). 11. J. C. Flores, J. Phys. A 26, L1255 (1993). 12. P. K. Datta, D. Giri, and K. Kundu, Phys. Rev. B 47, 10 727 (1993); 48, 16 347 (1993). 13. F. Domínguez-Adame, E. Maciá, and A. Sánchez, Phys. Rev. B 48, 6054 (1993). 14. A. Sánchez, E. Maciá, and F. Domínguez-Adame, Phys. Rev. B 49, 147 (1994); A. Sánchez, F. Domínguez-Adame, and E. Maciá, ibid. 51, 173 (1995). 15. E. Diez, A. Sánchez, and F. Domínguez-Adame, Phys. Rev. B 50, 14 359 (1994); F. Domínguez-Adame, A. Sánchez, and E. Diez, ibid. 50, 17 736 (1994).16. A. Sánchez, F. Domínguez-Adame, G. P. Berman, and F. Izrailev, Phys. Rev. B 51, 6769 (1994). 17. S. N. Evangelou and D. E. Katsanos, Phys. Lett. A 164, 456 (1992). 18. S. N. Evangelou and A. Z. Wang, Phys. Rev. B 47, 13 126 (1993). 19. S. N. Evangelou and E. N. Economou, J. Phys. A 26, 2803 (1993). 20. M. Hilke, J. Phys. A 27, 4773 (1994); M. Hilke and J. C. Flores, Phys. Rev. B 55, 10 625 (1997); M. Hilke, J. Phys. A 30, L367 (1997). 21. J. Heinrichs, Phys. Rev. B 51, 5699 (1995). 22. V. Bellani, E. Diez, R. Hey, L. Toni, L. Tarricone, G. B. Parravicini, F. Domínguez-Adame and R. Gómez-Alcalá, Phys. Rev. Lett. 82, 2159 (1999). 23. D. G. Sedrakyan and A. G. Sedrakyan, Phys. Rev. B 60, 10 114 (1999). 24. R. Landauer, Philos. Mag. 21, 863 (1970). 25. P. W. Anderson, D. J. Thouless, E. Abrahams, and D. S. Fisher, Phys. Rev. B 22, 3519 (1980). 26. E. Erdós and R. C. Herndon, Adv. Phys. 31, 65 (1982). 27. A. Abrikosov, Solid State Commun. 37, 997 (1981); V. Melnikov, Fiz. Tverd. Tela (Leningrad) 23, 782 819819 [Sov. Phys. Solid State 23, 444 81981)]. 28. G. G. Kozlov, V. A. Malyshev, F. Domínguez-Adame, and A. Rodríguez, Phys. Rev. B 58, 5367 (1998). 29. J. H. Luscombe, Nanotechnology 4, 1 (1993). 30. I. Gómez, F. Domínguez-Adame, E. Díez, and V. Bellani, J. Appl. Phys. 85, 3916 (1999).
NO © 2000 The American Physical Society.The work of T.H. and A.S. was supported in part by INTAS, Grant No. 96-524. Work at Madrid was supported by CAM, Grant No. 07N/0034/98.
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