Jpn. J. Appl. Phys. 28 (1989) pp. 645-648  |Next Article|  |Table of Contents|
|Full Text PDF (644K)| |Buy This Article|

Dimensional Crossover of Electron-Electron Scattering in GaAs-AlGaAs Wires

Yukihiko Takagaki, Koji Ishibashi, Shuichi Ishida¹, Sadao Takaoka², Kenji Gamo, Kazuo Murase² and Susumu Namba

(Received December 15, 1988; accepted for publication February 25, 1989)

We report a size effect on the phase coherence length (L_i) in narrow GaAs-AlGaAs wires, deduced from the negative magnetoresistance due to weak localization. The temperature dependence of L_i changes as the channel width becomes narrower than the thermal diffusion length. We interpret the change as a dimensional crossover of the electron-electron scattering. The deduced L_i can reasonably explain the amplitude of Aharonov-Bohm magnetoconductance oscillations observed in a ring fabricated from the same wafer.

URL: http://jjap.jsap.jp/link?JJAP/28/645/
DOI: 10.1143/JJAP.28.645

References | Citing Articles (6)

1. G. Bergmann: Phys. Rep. 107 (1984) 1[CrossRef].
2. Y. Takagaki, F. Wakaya, Y. Kusumi, Y. Yuba, K. Gamo, S. Namba, S. Takaoka and K. Murase: to be published in Proc. 14th Int. Conf. Microlithography Microcircuit Engineering, Vienna 1988 (Elsevier Science Publishers, Amsterdam, 1989).
3. R. G. Wheeler, K. K. Choi, A. Goel, R. Wisnieff and D. E. Prober: Phys. Rev. Lett. 49 (1981) 1674[APS].
4. B. L. Altshuler and A. G. Aronov: Pis'ma Zh. Eksp. Teor. Fiz. 33 (1981) 515 [JETP Lett. 33 (1981) 499].
5. P. A. Lee and A. D. Stone: Phys. Rev. Lett. 55 (1985) 1622[APS].
6. P. A. Lee and T. V. Ramakrishnan: Rev. Mod. Phys. 57 (1985) 287[APS].
7. B. L. Altshuler, D. Khmelnitzkii, A. I. Larkin and P. A. Lee: Phys. Rev. B22 (1980) 5142[APS].
8. H. Z. Zheng, H. P. Wei, D. C. Tsui and G. Weimann: Phys. Rev. B34 (1986) 5635[APS].
9. Y. Takagaki, K. Ishibashi, K. Gamo, S. Namba, S. Takaoka, K. Murase, S. Ishida and Y. Aoyagi: to be published in Proc. 1st Int. Conf. Electronic Materials, Tokyo, 1988 (Materials Research Society, Pennsylvania, 1989).
10. B. L. Altshuler, A. G. Aronov and D. E. Khmelnitskii: J. Phys. C15 (1982) 7367[IoP STACKS].
11. S. Wind, M. J. Rooks, V. Chandrasekhar and D. E. Prober: Phys. Rev. Lett. 57 (1986) 633[APS].
12. D. E. Beutler and N. Giordano: Phys. Rev. B36 (1987) 7705[APS].
13. K. F. Berggren, T. J. Thornton, D. J. Newson and M. Pepper: Phys. Rev. Lett. 57 (1986) 1769[APS].
14. K. K. Choi, D. C. Tsui and K. Alavi: Phys. Rev. B36 (1987) 7751[APS].
15. T. Hiramoto, K. Hirakawa, Y. lye and T. Ikoma: to be published in Proc. 1st Int. Conf. Electronic Materials, Tokyo, 1988 (Materials Research Society, Pennsylvania, 1989).
16. A. P. Heraud, S. P. Beaumont, C. D. W. Wilkinson, P. C. Main, J. R. O. Bradley and L. Eaves: J. Phys. C20 (1987) L249[IoP STACKS].
17. C. W. J. Beenakker and H. van Houten: Phys. Rev. B38 (1988) 3232[APS].
18. H. van Houten, C. W. J. Beenakker, B. J. van Wees and J. E. Mooij: Surf. Sci. 196 (1988) 144.
19. K. Ishibashi, Y. Takagaki, K. Gamo, S. Namba, S. Ishida, K. Murase, Y. Aoyagi and M. Kawabe: Solid State Commun. 64 (1987) 573[CrossRef].
20. F. P. Milliken, S. Washburn, C. P. Umbach, R. B. Laibowitz and R. A. Webb: Phys. Rev. B36 (1987) 4465[APS].