PUBLICATIONS

G. P. Zhang

1. Resolving dd transitions in NaV$_2$O$_5$ using angular resolved
     resonant inelastic x-ray scattering at the V L-edge, G. P. Zhang
     and T. A. Callcott, Phys. Rev. B (accepted for publication, 2006).
   
2. Normal-mode selectivity in ultrafast Raman excitations in C60,  G. P. Zhang and T. F. George, Phys. Rev. B, 73, 035422 (2006)
   
3. High Harmonic Generations in $\rm C_{60}$
   G. P. Zhang, Phys. Rev. Lett.  95,  047401 (2005)
   

4. Controlling vibrational excitations in $\rm C_{60}$ by laser pulse durations
   G. P. Zhang and Thomas F. George, Phys. Rev. Lett. 93, 147401 (2004).

5. Extended Hellmann-Feynman theorem for degenerate eigenstates
   G. P. Zhang and Thomas F. George, Phys. Rev. B 69, 167102 (2004).

6. Hartree-Fock dynamical electron-correlation effects in $\rm C_{60}$ after laser excitation
   G. P. Zhang, Phys. Rev. Lett. 91, 176801 (2003).

7. Electron Correlation Effects in Resonant Inelastic X-ray Scattering of $\rm NaV_2O_5$.
   G. P. Zhang, T. A. Callcott, G. T. Woods, L. Lin, Brian Sales, D. Mandrus and J. He, Phys. Rev. Lett. 88, 077401 (2002); 88, 189902 (2002, Erratum).

8. Origin of giant optical nonlinearity in Charge-transfer Mott insulators: A new paradigm for nonlinear optics
   G. P. Zhang, Phys. Rev. Lett. 86, 2086-2089 (2001).

9. Laser-induced ultrafast demagnetization in ferromagnetic metals
   G. P. Zhang and W. Hübner, Phys. Rev. Lett. 85, 3025 (2000).

10. Laser-induced ultrafast dynamics in $\rm C_{60}$
    G. P. Zhang, X. Sun and T. F. George, Phys. Rev. B , 68, 165410 (2003).

11. Accurate ground-state phase diagram of the one-dimensional extended Hubbard model at half filling
    G. P. Zhang, Phys. Rev. B , 68, 153101 (2003).

12. An angle-resolved soft x-ray spectroscopy study of the electronic states of single crystal $\rm MgB_2$
    G. P. Zhang, G. S. Chang, T. A. Callcott, D. L. Ederer, W. N. Kang, Eun-Mi Choi, Hyeong-Jin Kim, and Sung-Ik Lee, Phys. Rev. B 67, 174519 (2003).

13. Physical Theory, Origin of Flight, and A Synthesis Proposed for Birds
    C. A. Long, G. P. Zhang, T. F. George and C. F. Long, Journal of Theoretical Biology 224, 9 (2003).

14. Breakdown of the Hellmann-Feynman theorem: Degeneracy is the key
    G. P. Zhang and Thomas F. George, Phys. Rev. B 66, 033110 (2002).

15. Orbital-resolved Soft X-Ray Spectroscopy in $\rm NaV_2O_5$
    G. P. Zhang, G. T. Woods, Eric L. Shirley, T. A. Callcott, L. Lin, G. S. Chang, B. C. Sales, D. Mandrus, and J. He Phys. Rev. B 65, 165107 (2002).

16. Site selected oxygen-2p densities of states in $\mathrm{NaV_{2}O_{5}}$ determined from angular dependent x-ray emission and absorption spectra at the O-K edge
    G. D. Woods, G. P. Zhang, and T. A. Callcott, L. Lin, G. S. Chang, B. Sales, D. Mandrus, and J. He, Phys. Rev. B 65 165108 (2002).

17. Laser-induced Ultrafast Demagnetization: Femtomagnetism, A New Frontier?
    G. P. Zhang, W. Hübner, E. Beaurepaire and J.-Y. Bigot, Topics Appl. Phys. 83, 245-289 (2002).

18. Huge enhancement of optical nonlinearity in conjugated polyenes
    G. P. Zhang and T. F. George, Phys. Rev. B 63, 113107 (2001).

19. Soft X-ray Spectroscopy Measurements of the p-like Density of States of B in $\rm MgB_{2}$ and evidence for surface boron oxides on exposed surfaces.
    T. A. Callcott, L. Lin, G. T. Woods, G. P. Zhang, J. R. Thompson, M. Paranthaman, and D. L. Ederer, Phys. Rev. B 64, 132504 (2001)

20. Final-state effects in inelastic x-ray scattering: Resonant and Non-resonant
    E. L. Shirley, J. A. Soininen, G. P. Zhang, J. A. Carlisle, T. A. Callcott, D. L. Ederer, L. J. Terminello and R. C. C. Perera, J. El. Spectr. & Rel. phenomena 114-116, 939 (2001).

21. Laser-control of ferro- and antiferromagnetism
    M. Trzeciecki, O. Ney, G. P. Zhang and W. Hübner, Advances in Solid State Physics 41, 547-555 (2001).

22. Physical and evolutionary problems in take-off runs of bipedal winged vertebrates
    C. A. Long, G. P. Zhang and T. F. George, Archaeopteryx, 20, 63-71 (2002).

23. Origin of 0.89 eV peak in $\chi^{(3)}(-3\omega;\omega,\omega,\omega)$ of polyacetylene: Electron correlation effect
    G. P. Zhang, Phys. Rev. B 61, 4377 (2000).

24. Frequency-dependence of scaling exponents of hyperpolarizability in polyenes, A density-matrix renormalization-group approach
    G. P. Zhang, Phys. Rev. B 60, 11 482 (1999).

25. Ultrafast spin dynamics in ferromagnetic Nickel
    W. Hübner and G. P. Zhang, Phys. Rev. B 58, R5920 (1998).

26. Ground-state phase diagram of the one-dimensional extended Hubbard model: A density-matrix renormalization-group approach
    G. P. Zhang, Phys. Rev. B 56, 9189 (1997).

27. Relaxation process of self-trapping exciton in $\rm C_{60}$
    X. Sun, G. P. Zhang, Y. S. Ma, K. H. Lee, T. Y. Park, T. F. George and L. Pandey, Phys. Rev. B 53, 15 481 (1996).

28. Pairing in $\rm C_{60}$: A Gutzwiller approach
    G. P. Zhang, Y. S. Ma, X. Sun, K. H. Lee and T. Y. Park, Phys. Rev. B 52, 6081 (1995).

29. Relaxation process of charge transfer in $\rm C_{60}$
    G. P. Zhang, R. T. Fu, X. Sun, D. L. Lin and Thomas F. George, Phys. Rev. B 50, 11976 (1994).

30. Angular Rotation of Magnetic Hysteresis of Ion-Irradiated Ferromagnetic Thin Films
    G. S. Chang, T. A. Callcott, G. P. Zhang, G. T. Woods, S. H. Kim, S. W. Shin, K. Jeong, C. N. Whang, and A. Moewes, Appl. Phys. Lett. 81, 3016 (2002).

31. Kinetic energy-based normal mode analysis of electronic processes in $\rm C_{60}$
    G. P. Zhang, X. Sun and Thomas F. George, Croatica Chemica Acta 73, 1077-1085 (2000)

32. Femtosecond electron and spin dynamics probed by nonlinear optics
    G. P. Zhang and W. Hübner, Appl. Phys. B -Lasers and Optics 68, 495 (1999).

33. Femtosecond spin dynamics in the time domain
    G. P. Zhang and W. Hübner, J. Appl. Phys. 85, 5657 (1999).

34. Effects of electron interactions on the oscillator strengths in one-dimensional systems: A density-matrix renormalization-group approach
    G. P. Zhang and X. F. Zong, Chem. Phys. Lett. 308/3-4, 289 (1999).

35. Charge transfer and electron pairing in fullerenes
    R. T. Fu, G. P. Zhang, X. Sun and T. F. George, J. Cluster Science 276, 155 (1999).

36. Optical origin of efficient and selective trans $\leftrightarrow$ cis isomerization in photoexcited polyenes. An $ab~initio$ calculation
    G. P. Zhang, X. F. Zong and T. F. George, J. Chem. Phys. 110, 9765 (1999).

37. Femtosecond spin dynamics probed by linear and nonlinear magneto-optics
    W. Hübner and G. P. Zhang, J. of Magn. Magn. Mater. 189, 101 (1998).

38. A new scheme to calculate dipole-allowed singlets in conjugated polymers
    G. P. Zhang, Thomas F. George and Lakshmi N. Pandey, J. Chem. Phys. 109, 2562 (1998); (or mpi-pks/9704001).

39. Modified explicitly restarted Lanczos algorithm
    G. P. Zhang, Comp. Phys. Commun. 109, 27 (1998) or mpi-pks/9612003.

40. Normal mode analysis for a comparative study of relaxation processes of charge transfer and photo-excitation in $\rm C_{60}$
    G. P. Zhang, X. Sun, T. F. George and L. N. Pandey, J. Chem. Phys. 106, 6398 (1997).

41. Dynamical process of exciton trapping in fullerene
    G. P. Zhang, H. Zhao, X. Sun, T. F. George, and L. N. Pandey, Synth. Met. 86, 2375 (1997).

42. Relaxation process of charge transfer in $\rm C_{60}$, A normal mode analysis
    G. P. Zhang, X. Sun, X. F. Zong, L. Pandey, T. F. George, Phys. Lett. A 220, 275 (1996).

43. Essential states of optical nonlinearities in a finite polyene
    Chang Qin Wu, G. P. Zhang and Huiming Qiu, Acta Physica Sinica Vol. 44, 64 (1995).

44. Photoinduced charge transfer in excited $\rm {C_{60}}$
    G. P. Zhang, R. T. Fu, X. Sun, K. H. Lee and T. Y. Park, J. Phys. Chem. 99, 12 301 (1995).

45. Pairing energy of hole doped $\rm C_{60}$
    G. P. Zhang, R. T. Fu, X. Sun, T. Y. Park and K. H. Lee, Phys. Lett. A, 199, 391 (1995).
46. Site-pairing of electron in doped $\rm C_{60}$
    G. P. Zhang, R. T. Fu, X. Sun and Y. Takahashi, Chin. Phys. Lett. 12, 453 (1995).

47. Dynamics of charge transfer and bond distortion in $\rm C_{60}$
    T. Y. Park, K. H. Lee, G. P. Zhang, R. T. Fu, X. Sun, R. L. Fu and H. J. Ye, Solid State Commun. 93, 507 (1995).

48. Self-trapping process of exciton in $\rm C_{60}$
    G. P. Zhang, Y. S. Ma, X. Sun, Y. Takahashi, Chin. Phys. Lett. 12, 665 (1995).

Book Chapters and Conference proceedings

1. Degenerate-four-wave mixing (DFWM) Study of fullerene derivatives
   G. P. Zhang, Jian Chen, Song Jie, Qian Shixiong, International Conference on Nonlinear Optical Physics and, Applications. Sept. 6-10, 1993, Nanjing, China.

2. Towards higher-temperature superconductivy in ${\rm C_{60}}$
   G. P. Zhang, X. Sun and T. F. George, Modern Topics in Chemical Physics, edited by T. F. George, X. Sun and G. P. Zhang, Research Signpost (2002).

3. Modern paradigms for nonlinear optics in polymers and nanostructured materials,
   G. P. Zhang, X. Sun and T. F. George, Modern Topics in Chemical Physics, edited by T. F. George, X. Sun and G. P. Zhang, Research Signpost (2002).

4. Modern Topics in Chemical Physics
   Edited by T. F. George, X. Sun and G. P. Zhang, Published by Research Signpost (2002).

5. Relaxations of charge transfers and photoexcitation in $\rm C_{60}$ and polymers
   X. Sun, G. P. Zhang, T. F. George, and R. T. Fu, pages 152-173, Computational studies of new materials, edited T. F. George and D. A. Jelski, World Scientific, (1999).

6. Ab initio calculation of ground and excited states in rhodopsin
   G. P. Zhang and T. F. George, Bulletin of the American Physical Society, Volume 43, No. 1, page 327 (1998).

7. Exciton relaxation and electron pairing in fullerene
   X. Sun, G. P. Zhang, K. H. Lee, T. Y. Park, R. T. Fu and D. L. Lin, Relaxation of excited states and photo-induced structural phase transitions, edited by K. Nasu, Springer Series in Solid-State Science, Vol. 124, Page 248, (Springer-Verlag Berlin Heidelberg, 1997).