"Collective Excitations and the Surface Modifications of the Silver Surfaces", Geunseop Lee, Ph. D Thesis, University of Pennsylvania (1995)

41. "Defect-induced perturbation on Si(111)4x1-In: Period-doubling modulation and its origin", Geunseop Lee, Sang-Yong Yu, Hanchul Kim, and Ja-Yong Koo, Phys. Rev. B 70, 121304 (2003).

40. "Facile fabrication of 2-dimensional arrays of sub-10 nm single crystalline Si nanopillars using nanoparticle masks", Young-Kyu Hong, Jae Ho Bahng, Geunseop Lee, Hanchul Kim, Wondong Kim, Sekyung Lee, Ja-Yong Koo, Jong-Il Park, Woo-ram Lee and Jinwoo Cheon, Chem. Commun. 2003, 3034 (2003).

39. "Atomic structure determination of the Ba/Si(111)-3x2 surface using STM and first-principle calculation", Geunseop Lee, Suklyun Hong, Hanchul Kim, and Ja-Yong Koo, Phys. Rev. B 68, 115314 (2003).

38. "Empty-state scanning tunneling microscopy image of C2H2 on Si(001)-new evidence for paired end-bridge di-σ configuration", Wondong Kim, Hanchul Kim, Geunseop Lee, Young-Kyu Hong, Sekyung Lee, and Ja-Yong Koo, Surf. Sci. 538, L477 (2003).

37."The 3x2 reconstruction of Sm/Si(111) interface", Frank Palmino, Eric Ehret, Louay Mansour, Jean Claude Labrune, Geunseop Lee, and Hanchul Kim, Phys. Rev. B 67, 195413 (2003).

36. "Reactivity towardes O2 and H2O of the alkali-metal induced Ge(111)-(3x1) surfaces: contrasting adsorption rates for different alkali-metals" Geunseop Lee, Junyeong Lee, Sehun Kim, and E. -J. Cho, Surf. Sci. 532-535, 764 (2003).

35. "Absolute In coverage and bias-dependent STM images of the Si(111)4x1-In surface", Geunseop Lee, Sang-Yong You, Hanchul Kim, Ja-Yong Koo, Hyung-Ik Lee, and Dae Won Moon, Phys. Rev. B 67, 035327 (2003).

34. "First-principles study of atomic and electronic structure Ba/Si(111)-3×2", Suklyun Hong, Hanchul Kim, Geunseop Lee, Ja-Yong Koo, and Hongsuk Yi Journ. of Phys. Soc. of Japan, 71, 2761 (2002).

33. "Formation of atomically flat Si(001) surface with incorporated carbon", Wondong Kim, Hanchul Kim, Geunseop Lee, Sang-Yong You, Young-Kyu Hong, and Ja-Yong Koo, Surf. Sci. 516, L553 (2002).

32. "Initial stage of carbon incorporation into Si(001) and one-dimensional ordering of embedded carbon", Wondong Kim, Hanchul Kim, Geunseop Lee, and Ja-Yong Koo, Phys. Rev. Lett. 89, 106102 (2002).

31. "Acetylene molecules on the Si(100) surface: room temperature adsorption and structural modification upon annealing", Wondong Kim, Hanchul Kim, Geunseop Lee, Jaegwan Chung, Sang-Yong You, Young-Kyu Hong, and Ja-Yong Koo, Surf. Sci. 514, 376 (2002).

30. "Surface reactivity of the alkali-metal-induced Ge(111)-3x1 surface under ultra-high vacuum", Geunseop Lee, E.-J. Cho, Y. Park, S. Cho, H.-G. Lee, Surf. Sci. 501, L177 (2002).

29. "High-resolution electron energy loss spectroscopy study on chemisorption of H on Cu(111)", Geunseop Lee and E. W. Plummer, Surf. Sci. 498, 229 (2002).

28. "Controlled two-dimensional distribution of nanoparticles by spin-coating method", Young-Kyu Hong, Hanchul Kim, Geunseop Lee, Wondong Kim, Jong-Il Pa, Jinwoo Cheon, and Ja-yong Koo, Appl. Phys. Lett. 80, 844 (2002).

27. "Initial Adsorption Configurations of Acetylene Molecules on Si(001) Surface", Wondong Kim, Hanchul Kim, Geunseop Lee, Young-Kyu Hong, Kidong Lee, Chanyong Hwang, Dal-Hyun Kim, and Ja-Yong Koo, Phys. Rev. B 64, 193313 (2001).

26. "Structure of the Ba-induced Si(111)-3×2 reconstruction", Geunseop Lee, Suklyun Hong, Hanchul Kim, Dongsoo Shin, Ja-Yong Koo, Hyung-Ik Lee, Dae Won Moon, Phys. Rev. Lett. 87, 056104 (2001).

25. "Scanning tunneling micrography study on the Li-induced Ge(111)3x1 reconstruction", Geunseop Lee, H. Mai, and R. F. Willis, Phys. Rev. B 63, 085323 (2001).

24. "Effect of Strain on the Chemisorption of CO on Ultrathin Ni Films on Cu(001)", E.-K. Whang, J. Oh, S.-K. Kim, J.-S. Kim, and Geunseop Lee, Phys. Rev. B 63, 075401 (2001).

23. "STM study of the charged defects on the Ge(111)-c(2x8) surface and the effect of density of states on defect-induced perturbation", Geunseop Lee, H. Mai, I. Chizhov and R. F. Willis, App. Surf. Sci. 160, 295 (2000).

22. "Stabilizing Influence of Double-Bonds on the Si(111)-3x1 & Ge(111)-3x1 Surface Reconstruction: New Experimental Evidence", Myunggeun Yoon, H. Mai, Geunseop Lee, and R. F. Willis. Surf. Sci. 463, 183 (2000).

21. "Charged defects on Ge(111)-c(2x8): characterization using STM", Geunseop Lee, H. Mai, I. Chizhov and R. F. Willis, Surf. Sci. 463, 55 (2000).

20. "Na- and Li-induced Ge(111)3x1 reconstruction: different electronic configurations revealed by scanning tunneling microscopy images", Geunseop Lee, Jonggeol Kim, I. Chizhov, H. Mai, and R. F. Willis, J. Vac. Sci. Technol. A. 18, 1488 (2000).

19. "Covalent Interaction of H with the d-electrons at the (111) surface of Ag", Geunseop Lee, and E. W. Plummer, Phys. Rev. B 62, 1651 (2000).

18. "Absence of Double-Bond Formation on Ge(111)3x1-Na Surface studied by Scanning Tunneling Microscopy", Geunseop Lee, Jonggeol Kim, H. Mai, I. Chizhov, and R. F. Willis, Phys. Rev. B 61, 9921 (2000).

17. "Alkali-Metal-Induced 3x1 Reconstruction of the Ge(111) surface studied by Scanning Tunneling Microscopy", Geunseop Lee, Jonggeol Kim, and R. F. Willis, J. of Kor. Phys. Soc. 35, S139 (1999).

16. "Evolution of the GaAs(001) surface structure during the transition from the As-rich (2x4) to the Ga-rich (4x2) reconstruction", Ilya. Chizhov, Geunseop Lee, Roy F. Willis, Dmitry Lubyshev and David L. Miller, Surf. Sci. 419, 1 (1998).

15. "STM study of room temperature adsorption of Au on the Si(111)-7x7 surface: evidence for the reaction of Au atoms with Si rest atoms", I. Chizhov, G. Lee, and R. F. Willis Appl. Phys. A 66, S1003 (1998).

14. " Monatomic step structure on the Si(001) surface", J.-Y. Koo, J.-Y. Yi, C. Hwang, D. -H. Kim, G. Lee, S. Lee, Appl. Phys. A 66, S989 (1998).

13. " Voltage-dependent scanning tunneling microscopy images of the Ge(111)-c(2x8) surface", Geunseop Lee, H. Mai, I. Chizhov, R. F. Willis, J. Vac. Sci. Technol. A16, 1006 (1998).

12. " Basic structure of the kinked monatomic steps on the Si(001) surface", Ja-Yong Koo, Jae-Yel Yi, Chanyong Hwang, Dal-Hyun Kim, Geunseop Lee, and Sekyung Lee, Phys. Rev. B 57, 8782 (1998).

11. "Scanning tunneling microscopy study of the evolution of the GaAs(001) surface during the (2x4)-(4x2) phase transition", Ilya Chizhov, Geunseop Lee, Roy F. Willis, Dmitry Lubyshev, and David L. Miller, Appl. Surf. Sci. 123/124, 192 (1998).

10."Initial stages of Au adsorption on the Si(111)-(7x7) surface studied by scanning tunneling microscopy", Ilya Chizhov, Geunseop Lee, R. F. Willis, Phys. Rev. B 56, 12316 (1997).

9. "GaAs(001)-2x3 surface studied by scanning tunneling microscopy", Ilya Chizhov, Geunseop Lee, R. F. Willis, D. Lubyshev, and D. L. Miller, Phys. Rev. B 56, 1013 (1997).

8. "Luminescence from GaAs(100) Surface excited by a Scanning Tunneling Microscope", Ilya Chizhov, Geunseop Lee, R. F. Willis, D. Lubyshev, and D. L. Miller, J. Vac. Sci. Technol. A 15, 1432 (1997).

7. "Coverage and structure of deuterium on Cu(111)", Geunseop Lee, D. B. Poker, D. M. Zehner, and E. W. Plummer, Surf. Sci. 357/358, 717 (1996).

6. "Mercury Surface-Plasmon Dispersion: Experiment and Theory", Bong-Ok Kim, Geunseop Lee, E. W. Plummer, P. Dowben and A. Liebsch, Phys. Rev. B 52, 6057 (1995).

5. "Interaction of Hydrogen with the Ag(111) Surface", Geunseop Lee and E. W. plummer, Phys. Rev. B 51, 7250 (1995).

4. "Chemisorption of Hydrogen on the Ag(111) Surface", Geunseop Lee, P. T. Sprunger, M. Okada, D. B. Poker, D. M. Zehner, and E. W. Plummer, J. Vac. Sci. Technol. A 12, 2119 (1994).

3. "Surface Plasmon Dispersion and Damping on Ag(110)", Geunseop Lee, P. T. Sprunger, and E. W. Plummer, Surf. Sci. 286, L547 (1993).

2. Reply to Comment on "Surface-Plasmon Energy and Dispersion on Ag Single Crystals", Geunseop Lee, P. T. Sprunger, E. W. Plummer and S. Suto, Phys. Rev. Lett. 67, 3198 (1991).

1. "Electronic Structures of NiO, CoO and FeO studied by 2p Core-level X-ray Photoelectron Spectroscopy", Geunseop Lee and S.-J. Oh, Phys. Rev. B 43, 14 674 (1991).