RT Journal Article T1 Electron transport across a Gaussian superlattice A1 Gomez, I. A1 Domínguez-Adame Acosta, Francisco A1 Díez, E. A1 Bellani, V. AB We study the electron transmission probability in semiconductor superlattices where the height of the barriers is modulated by a Gaussian profile. Such structures act as efficient energy band-pass filters and, contrary to previous designs, it is expected to present a lower number of unintentional defects and, consequently, better performance. The j-V characteristic presents negative differential resistance with peak-to-valley ratios much greater than in conventional semiconductor superlattices. PB American Institute of Physics SN 0021-8979 YR 1999 FD 1999-04-01 LK https://hdl.handle.net/20.500.14352/59361 UL https://hdl.handle.net/20.500.14352/59361 LA eng NO 1. L. Esaki and R. Tsu, IBM J. Res. Dev. 14, 61 (1970). 2. R. Tsu and L. Esaki, Appl. Phys. Lett. 22, 562 (1973). 3. H.-H. Tung and C.-P. Lee, IEEE J. Quantum Electron. 32, 507 (1996). 4. K. A. Mäder and A. Zunger, Europhys. Lett. 31, 107 (1995). 5. J. H. Luscombe, Nanotechnology 4, 1 (1993). 6. F. Domínguez-Adame, A. Sánchez, and E. Diez, Phys. Rev. 50, 17736 (1994). 7. C. B. Duke, Tunneling in Solids (Academic, New York, 1969). 8. T. B. Boykin, Phys. Rev. B 51, 4289 (1995). 9. F. Domínguez-Adame, B. Méndez, and E. Maciá, Semicond. Sci. Technol. 9, 263 (1994). 10. C. Rauch, G. Strasser, K. Unterrainer, W. Boxleitner, and G. Gornik, Phys. Rev. Lett. 81, 3495 (1998). NO © 1999 American Institute of Physics.Work at Madrid has been supported by CAM (Spain) under Project No. 07N/0034/1998. NO CAM DS Docta Complutense RD 30 abr 2024