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List of Publications

 

Ken Ahn

 

Total number of citations: 767 (updated on 6/27/2008)

H-index: 12

 

Publications in Nature / Phys. Rev. Lett. / Phys. Rev. B / Appl. Phy. Lett.

 

21.  Dynamics and spectral weights of shake-up valence excitations in transition metal K-edge resonant inelastic x-ray scattering

K. H. Ahn, A. J. Fedro, and M. van Veenendaal, Phys. Rev. B 79, 045103 (2009).

 

20.  Infrared-active excitations related to Ho3+ ligand-field splitting at the commensurate-incommensurate magnetic phase transition in HoMn2O5
A. A. Sirenko, S. M. O¡¯Malley, K. H. Ahn, S. Park, G. L. Carr, and S-W. Cheong, Phys. Rev. B 78, 174405 (2008).

 

19. Epitaxial checkerboard arrangement of nanorods in ZnMnGaO4 films studied by x-ray diffraction

S. M. O'Malley, P. L. Bonanno, K. H. Ahn, A. A. Sirenko, A. Kazimirov, S. Park, and S-W. Cheong, Phys. Rev. B 78, 165424 (2008).

 

18. Nematic domains and resistivity in an itinerant metamagnet coupled to phonons

      H. Doh, Y. B. Kim, and K. H. Ahn, Phys. Rev. Lett. 98, 126407 (2007).

 

17. Observation of strain and temperature induced changes in the band structure of thin La0.8MaO3-d films

      T. A. Tyson, Q. Qing, M. A. DeLeon, C. Dubourdieu, L. Fratila, Y. Q. Cai, and K. H. Ahn, Appl. Phys. Lett. 90, 101915 (2007)

 

16.  Electronic properties of structural twin and antiphase boundaries in materials with strong electron-lattice couplings

K. H. Ahn, T. Lookman, A. Saxena and A. R. Bishop, Phys. Rev. B 71, 212102 (2005).

 
15.  Coherent optical and acoustic phonon generation correlated to charge ordering phase transition in La1-xCaxMnO3

D. Lim, V. K. Thorsm©ªlle, R. D. Averitt, Q. X. Jia, K. H. Ahn, M. J. Graf , S. A. Trugman and A. J. Taylor, Phys. Rev. B 71, 134403 (2005).

 

14.  Strain-induced metal-insulator phase coexistence in perovskite manganites

K. H. Ahn, T. Lookman and A. R. Bishop, Nature 428, 401 (2004). [pdf file]. (Number of citations >150)

[Featured as ¡°News & Views¡± in Nature Materials 3, 207 (2004) [pdf file] by N. Mathur and P. Littlewood, and in the Los Alamos News Bulletin. Invited for 2005 APS March Meeting and 2005 Magnetism and Magentic Materials Conference.]

 

13.  Ultrafast quasiparticle relaxation dynamics in normal metals and heavy fermion materials

K. H. Ahn, M. J. Graf, S. A. Trugman, J. Demsar, R. D. Averitt, J. L. Sarrao and A. J. Taylor, Phys. Rev. B 69, 045114 (2004).

[Included in Virtual Journal of Ultrafast Science 3, Issue 2 (2004)]

 

12.  Strain selection of charge and orbital ordering patterns in half-doped manganites

M. J. Calderón, A. J. Millis and K. H. Ahn, Phys. Rev. B 68 - Rapid Comm., 100401 (2003).

 

11.  Atomic scale lattice distortions and domain wall profiles

K. H. Ahn, T. Lookman, A. Saxena and A. R. Bishop, Phys. Rev. B 68, 092101 (2003).

 

10.  Elasticity-driven nanoscale electronic structure in superconductors

J.-X. Zhu, K. H. Ahn, Z. Nussinov, T. Lookman, A. V. Balatsky and A. R. Bishop, Phys. Rev. Lett. 91, 057004 (2003).

 

 9.  Quasiparticle relaxation dynamics in heavy fermion compounds

J. Demsar, R. D. Averitt, K. H. Ahn, M. J. Graf, S. A. Trugman, V. V. Kabanov, J. L. Sarrao and A. J. Taylor, Phys. Rev. Lett. 91, 027401 (2003).

[Included in Virtual Journal of Ultrafast Science 2, Issue 8 (2003)]

 

 8.  Superconductivity in magnetically ordered CeTe1.82

M. H. Jung, A. Alsmadi, H. C. Kim, Y. Bang, K. H. Ahn, K. Umeo, A. H. Lacerda, H. Nakotte, H. C. Ri and T. Takabatake, Phys. Rev. B 67, 212504 (2003).

 

 7. Ground state properties of ferromagnetic metal/conjugated polymer interfaces

S. J. Xie, K. H. Ahn, D. L. Smith, A. R. Bishop and A. Saxena, Phys. Rev. B 67, 125202 (2003).

 

 6. Effects of the uniaxial strain in LaMnO3

K. H. Ahn and A. J. Millis, Phys. Rev. B 64, 115103 (2001).

 

 5. Effects of magnetic ordering on the anisotropy and temperature dependence of the optical conductivity in LaMnO3: a tight binding approach

K. H. Ahn and A. J. Millis, Phys. Rev. B 61, 13545 (2000). (Number of citations > 30)

 

 4. Optical conductivity of manganites: Crossover from Jahn-Teller small polaron to coherent transport in the ferromagnetic state

M. Quijada, J. Černe, J. R. Simpson, H. D. Drew, K. H. Ahn, A. J. Millis, R. Shreekala, R. Ramesh, M. Rajeswari and T. Venkatesan, Phys. Rev. B 58, 16093 (1998). (Number of citations > 110)

 

 3. Interplay of charge and orbital ordering in manganese perovskites

K. H. Ahn and A. J. Millis, Phys. Rev. B 58, 3697 (1998). (Number of citations > 30)

 

 2. Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe

K. H. Ahn, X. W. Wu, K. Liu and C. L. Chien, Phys. Rev. B 54, 15299 (1996). (Number of citations > 160)

 

 1. Charge ordering and magnetoresistance in Nd1-xCaxMnO3 due to reduced double exchange

K. Liu, X. W. Wu, K. H. Ahn, T. Sulchek, C. L. Chien and J. Q. Xiao, Phys. Rev. B 54, 3007 (1996). (Number of citations > 70)

 

Papers Submitted

 

2. Origin of the non-linear pressure effects in perovskite manganites: Buckling of Mn-O-Mn bonds and Jahn-Teller distortion of the MnO6 octahedra induced by pressure

Z. Chen, T. A. Tyson, K. H. Ahn, Z. Zhong, and J. Hu (arXiv:0708.1963)

 

1. Symmetry-based atomic scale description of lattice dynamics and its applications for phonon mode analysis

Jichan Moon, Tsezar F. Seman, and K. H. Ahn (arXiv:0707.1921)

 

Conference Proceedings and Book Chapters

 

8.   Model for strain-induced metal-insulator phase coexistence in colossal magnetoresistive perovskite manganites (Invited)

K. H. Ahn, T. Lookman, and A. R. Bishop, J. Appl. Phys. 99, 08A703 (2006).

 

 7.  Basic properties of spin injection and transport in ferromagnetic/polymer systems

S. J. Xie, J. F. Ren, J. Y. Fu, K. H. Ahn, D. L. Smith, A. R. Bishop and A. Saxena, a book chapter in Progress in Ferromagnetism Research, Nova Science Publisher (2005).

 

 6.  Atomic scale elastic textures coupled to electrons in superconductors

K. H. Ahn, J.-X. Zhu, Z. Nussinov, T. Lookman, A. Saxena, A. V. Balatsky and A. R. Bishop, J. Superconductivity 17, 7 (2004).

 

 5.  Effects of in-plane strain on magnetism in LaMnO3 thin films

K. H. Ahn and A. J. Millis, Int. J. of Modern Physics 16, 3281 (2002).

 

 4.  Effects of in-plane strain on orbital ordering and magnetism in LaMnO3 thin film

K. H. Ahn and A. J. Millis, Physica B 312-313, 766 (2002).

 

 3.  Effects of in-plane strain on magnetism in LaMnO3 thin films

K. H. Ahn and A. J. Millis, Proceedings of Physical Phenomena at High Magnetic Fields – IV, 389 (2001).

 

 2.  Optical and magnetic property of LaMnO3

K. H. Ahn and A. J. Millis, J. Appl. Phys. 87, 5013 (2000).

 

 1.  Effects of Fe doping in the colossal magnetoresistive La1-xCaxMnO3

K. H. Ahn, X. W. Wu, K. Liu and C. L. Chien, J. Appl. Phys. 81, 5505 (1997). (Number of citations > 40)