Hrvoje Petek (born January 13, 1958) is a Croatian-born American physicist and the Richard King Mellon Professor of Physics and Astronomy,[1] at the University of Pittsburgh, where he is also a professor of chemistry.[2]
Petek has developed coherent photoelectron spectroscopy[5][6] and microscopy[7] as methods for studying the dephasing and spatial propagation of polarization fields in solid state materials and nanostructure. He is developing methods for multidimensional multiphoton-photoemission spectroscopy.[8] Together with Taketoshi Minato, Yousoo Kim, Maki Kawai, Jin Zhao, Jinlong Yang and Jianguo Hou, Petek discovered a delocalized electronic structure created by oxygen vacancy on titanium dioxide surface.[9] Together with Jin Zhao, Ken Jordan and Ken Onda, Petek also discovered wet electron states, where electrons are partially solvated by water and other protic solvents at molecule vacuum interfaces.[10] Together with Min Feng and Jin Zhao, Petek discovered atom-like superatom states of C60, and similar hollow molecules.[11] Petek's research of metal plasmon excitations with semiconductor substrates, unrevealed the charge injection from optically active plasmonic modes into semiconductor substrates.[12]
Petek is editor-in-chief of Progress in Surface Science[13] and has organized conferences such as the 11th International Symposium of Ultrafast Surface Dynamics, held in Qiandao Lake, China.[14] Petek has been (2015-2019) a member of the National Research and Development Agency Committee for the National Institute for Materials Science and is currently a senior scientific advisor to the Institute for Molecular Science in Japan.[15]
^Ogawa, S.; Nagano, H.; Petek, H.; Heberle, A.P. (17 Feb 1997). "Optical Dephasing in Cu(111) Measured by Interferometric Two-Photon Time-Resolved Photoemission". Phys. Rev. Lett. 78 (7): 1339–1342. Bibcode:1997PhRvL..78.1339O. doi:10.1103/PhysRevLett.78.1339.
^Petek, H.; Ogawa, S. (30 Dec 1997). "Femtosecond time-resolved two-photon photoemission studies of electron dynamics in metals". Progress in Surface Science. 56 (4): 239–310. Bibcode:1997PrSS...56..239P. doi:10.1016/S0079-6816(98)00002-1.
^Dąbrowski, Maciej; Dai, Yanan; Petek, Hrvoje (30 August 2017). "Ultrafast Microscopy: Imaging Light with Photoelectrons on the Nano–Femto Scale". J. Phys. Chem. Lett. 8 (18): 4446–4455. doi:10.1021/acs.jpclett.7b00904. PMID28853892.
