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Volumn 69, Issue 20, 2004, Pages

Competing mechanisms for singlet-triplet transition in artificial molecules

Author keywords

[No Author keywords available]

Indexed keywords

ACCELERATION; ARTICLE; ELECTRON; ENERGY TRANSFER; MAGNETIC FIELD; MOLECULAR DYNAMICS;

EID: 37649029534     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.69.201308     Document Type: Article
Times cited : (34)

References (35)
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    • J.J. Palacios and P. Hawrylak, Phys. Rev. B 51, 1769 (1995); J.H. Oh, K.J. Chang, G. Ihm, and S.J. Lee, ibid. 53, R13264 (1996); M. Rontani, F. Rossi, F. Manghi, and E. Molinari, Solid State Commun. 112, 151 (1999); Y. Tokura, D.G. Austing, and S. Tarucha, J. Phys.: Condens. Matter 11, 6023 (1999); B. Partoens and F.M. Peeters, Phys. Rev. Lett. 84, 4433 (2000); L. Martin-Moreno, L. Brey, and C. Tejedor, Phys. Rev. B 62, R10633 (2000); M. Pi, A. Emperador, M. Barranco, F. Garcias, K. Muraki, S. Tarucha, and D.G. Austing, Phys. Rev. Lett. 87, 066801 (2001); M. Rontani, G. Goldoni, and E. Molinari, in New directions in mesoscopic physics (towards nanoscience), edited by R. Fazio, V. F. Gantmakher, and Y. Imry, NATO ASI series B, Vol. 125 (Kluwer, Dordrecht, 2003), p. 361; cond-mat/0212626.
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    • J.J. Palacios and P. Hawrylak, Phys. Rev. B 51, 1769 (1995); J.H. Oh, K.J. Chang, G. Ihm, and S.J. Lee, ibid. 53, R13264 (1996); M. Rontani, F. Rossi, F. Manghi, and E. Molinari, Solid State Commun. 112, 151 (1999); Y. Tokura, D.G. Austing, and S. Tarucha, J. Phys.: Condens. Matter 11, 6023 (1999); B. Partoens and F.M. Peeters, Phys. Rev. Lett. 84, 4433 (2000); L. Martin-Moreno, L. Brey, and C. Tejedor, Phys. Rev. B 62, R10633 (2000); M. Pi, A. Emperador, M. Barranco, F. Garcias, K. Muraki, S. Tarucha, and D.G. Austing, Phys. Rev. Lett. 87, 066801 (2001); M. Rontani, G. Goldoni, and E. Molinari, in New directions in mesoscopic physics (towards nanoscience), edited by R. Fazio, V. F. Gantmakher, and Y. Imry, NATO ASI series B, Vol. 125 (Kluwer, Dordrecht, 2003), p. 361; cond-mat/0212626.
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    • edited by R. Fazio, V. F. Gantmakher, and Y. Imry, NATO ASI series B,(Kluwer, Dordrecht); cond-mat/0212626
    • J.J. Palacios and P. Hawrylak, Phys. Rev. B 51, 1769 (1995); J.H. Oh, K.J. Chang, G. Ihm, and S.J. Lee, ibid. 53, R13264 (1996); M. Rontani, F. Rossi, F. Manghi, and E. Molinari, Solid State Commun. 112, 151 (1999); Y. Tokura, D.G. Austing, and S. Tarucha, J. Phys.: Condens. Matter 11, 6023 (1999); B. Partoens and F.M. Peeters, Phys. Rev. Lett. 84, 4433 (2000); L. Martin-Moreno, L. Brey, and C. Tejedor, Phys. Rev. B 62, R10633 (2000); M. Pi, A. Emperador, M. Barranco, F. Garcias, K. Muraki, S. Tarucha, and D.G. Austing, Phys. Rev. Lett. 87, 066801 (2001); M. Rontani, G. Goldoni, and E. Molinari, in New directions in mesoscopic physics (towards nanoscience), edited by R. Fazio, V. F. Gantmakher, and Y. Imry, NATO ASI series B, Vol. 125 (Kluwer, Dordrecht, 2003), p. 361; cond-mat/0212626.
    • (2003) New Directions in Mesoscopic Physics (Towards Nanoscience) , vol.125 , pp. 361
    • Rontani, M.1    Goldoni, G.2    Molinari, E.3
  • 24
    • 33646669841 scopus 로고    scopus 로고
    • note
    • The exchange energy J(B⊥,B∥) results from both single-particle and Coulomb contributions. The term exchange interaction, as used in the paper, indicates only the Coulomb term depending on the symmetry of the two-electron spatial wave function.
  • 26
    • 33646665857 scopus 로고    scopus 로고
    • note
    • 0 = 0.067, ε* = 12.9, g* = -0.44.
  • 27
    • 33646660541 scopus 로고    scopus 로고
    • note
    • Typical calculations are performed on a (100×100×40) nm grid with (64×64×128) points along directions (x,y,z), respectively; the Coulomb interaction is represented on a single-particle basis set consisting of 12 states.
  • 29
    • 33646664557 scopus 로고    scopus 로고
    • note
    • Here the S/AS labeling is used for brevity. Obviously, for a general field direction with respect to the tunneling direction, wave functions do not have a well defined S/AS symmetry. See Bellucci et al. (Ref. 25).
  • 30
    • 33646643217 scopus 로고    scopus 로고
    • note
    • g) molecular orbitals, respectively. See Rontani et al. (Ref. 7).
  • 32
    • 33646669476 scopus 로고    scopus 로고
    • note
    • Eventually, as the field is further increased, electron localize in a confined counterpart of a Wigner crystal. See Rontani et al. (Ref. 9).
  • 35
    • 33646666265 scopus 로고    scopus 로고
    • note
    • Scattering of calculated points is related to the finiteness of the space grids. These inaccuracies are more significant for nonsymmetric field directions.


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