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

  • Zhiming M. Wang1Email author,

    Affiliated with

    • Kyland Holmes1,

      Affiliated with

      • Yuriy I. Mazur1,

        Affiliated with

        • Kimberly A. Ramsey1 and

          Affiliated with

          • Gregory J. Salamo1

            Affiliated with

            Nanoscale Research Letters20061:57

            DOI: 10.1007/s11671-006-9002-z

            Published: 25 July 2006


            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.


            Quantum dots Droplet epitaxy




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

            Authors’ Affiliations

            Department of Physics, University of Arkansas


            1. Bimberg D, Grundmann M, Ledentsov NN: Quantum Dot Heterostructures. Wiley, Chichester; 1999.
            2. Leonard D, Krishnamurthy M, Reaves CM, DenBaars SP, Petroff PM: Appl. Phys. Lett.. 1993, 63: 3203. COI number [1:CAS:528:DyaK2cXht1WrtbY%3D] 10.1063/1.110199View Article
            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] 10.1063/1.111502View Article
            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.37.7158View Article
            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.L79View Article
            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+View Article
            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.200510031View Article
            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.191373698View Article
            9. Lee H, Johnson JA, He MY, Speck JS, Petroff PM: Appl. Phys. Lett.. 2001, 78: 105. COI number [1:CAS:528:DC%2BD3MXmvVCm] 10.1063/1.1336554View Article
            10. Lee SC, Dawson LR, Malloy KJ, Brueck SR: Appl. Phys. Lett.. 2001, 79: 2630. COI number [1:CAS:528:DC%2BD3MXnsFWltbg%3D] 10.1063/1.1409947View Article
            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] 10.1063/1.1326842View Article
            12. Liang J, Luo H, Beresford R, Xu J: Appl. Phys. Lett.. 2004, 85: 5974. COI number [1:CAS:528:DC%2BD2cXhtVKqtr%2FI] 10.1063/1.1834987View Article
            13. Song HZ, Usuki T, Hiros S, Takemoto K, Nakata Y, Yokoyama N, Sakuma Y: Appl. Phys. Lett.. 2005, 86: 113118. 10.1063/1.1887826View Article
            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] 10.1063/1.1544065View Article
            15. Tersoff J, Teichert C, Lagally MG: Phys. Rev. Lett.. 1996, 76: 1675. COI number [1:CAS:528:DyaK28XhtlGnt7k%3D] 10.1103/PhysRevLett.76.1675View Article
            16. Schmidbauer M, Hanke M, Kohler R: Phys. Rev. B. 2005, 71: 115323. 10.1103/PhysRevB.71.115323View Article
            17. Songmuang R, Kiravittaya S, Schmidt OG: Appl. Phys. Lett.. 2003, 82: 2892. COI number [1:CAS:528:DC%2BD3sXjtlSisrw%3D] 10.1063/1.1569992View Article
            18. Wang ZM, Holmes K, Yu. Mazur I, Salamo GJ: Appl. Phys. Lett.. 2003, 84: 1931. 10.1063/1.1669064View Article
            19. Wang ZhM, Seydmohamadi Sh, Lee JH, Salamo GJ: Appl. Phys. Lett.. 2004, 85: 5031. COI number [1:CAS:528:DC%2BD2cXhtValtbjJ] 10.1063/1.1823590View Article
            20. Heller EJ, Zhang ZY, Lagally MG: Phys. Rev. Lett.. 1993, 71: 743. COI number [1:CAS:528:DyaK3sXlsVOhsL0%3D] 10.1103/PhysRevLett.71.743View Article


            © to the authors 2006