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Self-organization of quantum-dot pairs by high-temperature droplet epitaxy


The spontaneously formation of epitaxial GaAs quantum-dot pairs was demonstrated on an AlGaAs surface using Ga droplets as a Ga nano-source. The dot pair formation was attributed to the anisotropy of surface diffusion during high-temperature droplet epitaxy.



  1. Bimberg D, Grundmann M, Ledentsov NN: Quantum Dot Heterostructures. Wiley, Chichester; 1999.

    Google Scholar 

  2. Leonard D, Krishnamurthy M, Reaves CM, DenBaars SP, Petroff PM: Appl. Phys. Lett.. 1993, 63: 3203. COI number [1:CAS:528:DyaK2cXht1WrtbY%3D] 10.1063/1.110199

    Article  Google Scholar 

  3. Moison JM, Houzay F, Barthe F, Leprince L, Andre E, Vatel O: Appl. Phys. Lett.. 1994, 64: 196. COI number [1:CAS:528:DyaK2cXitVGksb0%3D] 10.1063/1.111502

    Article  Google Scholar 

  4. Lee CD, Park C, Lee HJ, Lee KS, Park SJ, Park CG, Noh SK, Koguchi N: Jpn. J. Appl. Phys.. 1998, 37: 7158. COI number [1:CAS:528:DyaK1MXns1ClsQ%3D%3D] 10.1143/JJAP.37.7158

    Article  Google Scholar 

  5. Watanabe K, Koguchi N, Gotoh Y: Jpn. J. Appl. Phys.. 2000, 39: L79. COI number [1:CAS:528:DC%2BD3cXhtlSqt7w%3D] 10.1143/JJAP.39.L79

    Article  Google Scholar 

  6. Mano T, Kuroda T, Sanguinetti S, Ochiai T, Tateno T, Kim J, Noda T, Kawabe M, Sakoda K, Kido G, Koguchi N: Nano Lett.. 2005, 5: 425. COI number [1:CAS:528:DC%2BD2MXhtVKlur8%3D] 10.1021/nl048192+

    Article  Google Scholar 

  7. Wang ZhM, Holmes K, Shultz JL, Salamo GJ: Phys. Stat. Sol. (a). 2005, 202: R85. COI number [1:CAS:528:DC%2BD2MXmtVegu7w%3D] 10.1002/pssa.200510031

    Article  Google Scholar 

  8. Li SS, Xia JB, Liu JL, Yang FH, Niu ZC, Feng SL, Zheng HZ: Pro. Natl. Acad. Sci.. 2001, 98: 11847. COI number [1:CAS:528:DC%2BD3MXns1equrw%3D] 10.1073/pnas.191373698

    Article  Google Scholar 

  9. Lee H, Johnson JA, He MY, Speck JS, Petroff PM: Appl. Phys. Lett.. 2001, 78: 105. COI number [1:CAS:528:DC%2BD3MXmvVCm] 10.1063/1.1336554

    Article  Google Scholar 

  10. Lee SC, Dawson LR, Malloy KJ, Brueck SR: Appl. Phys. Lett.. 2001, 79: 2630. COI number [1:CAS:528:DC%2BD3MXnsFWltbg%3D] 10.1063/1.1409947

    Article  Google Scholar 

  11. Schmidt OG, Jin-Phillipp NY, Lange C, Denker U, Eberl K, Schreiner R, Grabeldinger H, Schweizer H: Appl. Phys. Lett.. 2000, 77: 4139. COI number [1:CAS:528:DC%2BD3cXovVKiu7o%3D] 10.1063/1.1326842

    Article  Google Scholar 

  12. Liang J, Luo H, Beresford R, Xu J: Appl. Phys. Lett.. 2004, 85: 5974. COI number [1:CAS:528:DC%2BD2cXhtVKqtr%2FI] 10.1063/1.1834987

    Article  Google Scholar 

  13. Song HZ, Usuki T, Hiros S, Takemoto K, Nakata Y, Yokoyama N, Sakuma Y: Appl. Phys. Lett.. 2005, 86: 113118. 10.1063/1.1887826

    Article  Google Scholar 

  14. Mei X, Blumin M, Sun M, Kim D, Wu ZH, Ruda HE, Guo QX: Appl. Phys. Lett.. 2003, 82: 967. COI number [1:CAS:528:DC%2BD3sXhtVGqt78%3D] 10.1063/1.1544065

    Article  Google Scholar 

  15. Tersoff J, Teichert C, Lagally MG: Phys. Rev. Lett.. 1996, 76: 1675. COI number [1:CAS:528:DyaK28XhtlGnt7k%3D] 10.1103/PhysRevLett.76.1675

    Article  Google Scholar 

  16. Schmidbauer M, Hanke M, Kohler R: Phys. Rev. B. 2005, 71: 115323. 10.1103/PhysRevB.71.115323

    Article  Google Scholar 

  17. Songmuang R, Kiravittaya S, Schmidt OG: Appl. Phys. Lett.. 2003, 82: 2892. COI number [1:CAS:528:DC%2BD3sXjtlSisrw%3D] 10.1063/1.1569992

    Article  Google Scholar 

  18. Wang ZM, Holmes K, Yu. Mazur I, Salamo GJ: Appl. Phys. Lett.. 2003, 84: 1931. 10.1063/1.1669064

    Article  Google Scholar 

  19. Wang ZhM, Seydmohamadi Sh, Lee JH, Salamo GJ: Appl. Phys. Lett.. 2004, 85: 5031. COI number [1:CAS:528:DC%2BD2cXhtValtbjJ] 10.1063/1.1823590

    Article  Google Scholar 

  20. Heller EJ, Zhang ZY, Lagally MG: Phys. Rev. Lett.. 1993, 71: 743. COI number [1:CAS:528:DyaK3sXlsVOhsL0%3D] 10.1103/PhysRevLett.71.743

    Article  Google Scholar 

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We thank Dr. John L. Shultz for his technical assistance regarding the MBE system.

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Correspondence to Zhiming M. Wang.

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Wang, Z.M., Holmes, K., Mazur, Y.I. et al. Self-organization of quantum-dot pairs by high-temperature droplet epitaxy. Nanoscale Res Lett 1, 57 (2006).

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  • Quantum dots
  • Droplet epitaxy