近年来,光电子谱被广泛应用于薄膜中量子阱态的研究.为解释薄膜中分立的量子阱态和薄膜的光电子谱间的关系,发展了一些理论模型.介绍了近自由电子模型、相位积累模型和电子干涉模型等关于薄膜中量子阱态的理论模型,并用它们解释了量子阱态在光电子谱中峰位和线宽.线宽由准粒子寿命的倒数Г以及电子在表面和界面反射系数的和R决定,电子波矢К以及电子在表面和界面相位移之和Ф决定了峰的位置.
参考文献
| [1] | Yu Yongqin, Huang Baibiao, et al. Quantum confinement effect on PL spectrum of InGaAs/A1GaAs multiquantum wells [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2003, 20(3): 345-349 (in Chinese). |
| [2] | Mueller M A, Miller T, Chiang T C. Determination of the bulk band structure of Ag in Ag/Cu(111) quantum-well systems [J]. Phy. Rev. B, 1990, 41: 5214. |
| [3] | Paggel J J, Miller T, Chiang T C. Quasiparticle lifetime in macroscopically uniform Ag/Fe(100) quantum wells [J]. Phys. Rev. Lett., 1998, 81: 5632. |
| [4] | Ortega J E, Himpsel F J. Quantum well states as mediators of magnetic coupling in superlattices [J]. Phys. Rev.Lett., 1992, 69: 844. |
| [5] | Bouadma N, Kazmierski C, Semo J. GaAs quantum well laser and heterojunction on bipolar transistor integration using molecular beam epitaxial regrowth [J]. Appl. Phys. Lett., 1991, 59(22): 25. |
| [6] | Gardelis S, Smith C G, Barnes C H W, et al. Spin-valve effects in a semiconductor field-effect transistor: a spintronic device [J]. Phy. Rev. B, 1999, 60: 7764. |
| [7] | Zhang Li, et al. Structures of the energy levels of the bound states in a quantum dot quantum well [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2003, 20(3): 338-344 (in Chinese). |
| [8] | Cardona M, Ley L, et al. Photoemission in Solids Ⅰ, Topics in Applied Physics [M]. Berlin: Springer, 1978. 26. |
| [9] | Cardona M, Ley L, et al. Photoemission in Solids Ⅱ, Topics in Applied Physics [M]. Berlin: Springer, 1979. 26. |
| [10] | Paggel J J, Miller T, et al. Quantum well photoemission from atomically uniform Ag films: determination of electronic band structure and quasi-particle lifetime in Ag 100 [J]. Applied Surface Science 2000, 162-163: 78-85. |
| [11] | McMahon W E, Miller T, et al. Electronic properties of the leaky quantum-well system Ag(111)/Au/Ag [J]. Phy.Rev. B, 1996, 54: 10800. |
| [12] | Smith N V. Electronic properties of the leaky quantum-well system Ag(111)/Au/Ag [J]. Phys. Rev. B, 1985, 32:3549. |
| [13] | Chiang T C. Phase analysis of image states and surface states associated with nearly-free-electron band gaps [J].Surface Science Reports, 2000, 39: 181-235, 191. |
| [14] | Huang Kun, Han Ruqi, Photoemission studies of quantum well states in thin films [J]. Solide Physics (固体物理),1988. 163 (in Chinese). |
| [15] | Smith N V, Brookes N B, Chang Y, et al. Quantum-well and tight-binding analyses of spin-polarized photoemission from Ag/Fe(001) overlayers [J]. Phys. Rev. B, 1994, 49: 332. |
| [16] | Smith N V, Chen C T. Spectroscopic constraints on the potential barrier at metal surfaces [J]. Surf. Sci., 1991,247: 133. |
| [17] | Milun M, Pervan P, et al. Quantum well structures in thin metal films: simple model physics in reality? [J]. Rep.Prog. Phys., 2002, 65: 99-141. |
| [18] | Paggel J J, Miller T, et al. Quantum-well states as Fabry-Pe'rot modes in a thin-film electron interferometer [J].Science, 1999, 283: 1709. |
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