Download or read book Ultrafast Studies of Electron Dynamics at Metal dielectric Interfaces written by Nien-Hui Ge and published by . This book was released on 1998 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Studies of Electron Dynamics at Metal dielectric Interfaces written by and published by . This book was released on 1998 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Femtosecond time- and angle-resolved two-photon photoemission spectroscopy has been used to study fundamental aspects of excited electron dynamics at metal-dielectric interfaces, including layer-by-layer evolution of electronic structure and two-dimensional electron localization. On bare Ag(111), the lifetimes of image states are dominated by their position with respect to the projected bulk band structure. The n = 2 state has a shorter lifetime than the n = 1 state due to degeneracy with the bulk conduction band. As the parallel momentum of the n = 1 image electron increases, the lifetime decreases. With decreasing temperatures, the n = 1 image electrons, with zero or nonzero parallel momentum, all become longer lived. Adsorption of one to three layers of n-heptane results in an approximately exponential increase in lifetime as a function of layer thickness. This results from the formation of a tunneling barrier through which the interfacial electrons must decay, consistent with the repulsive bulk electron affinity of n-alkanes. The lifetimes of the higher quantum states indicate that the presence of the monolayer significantly reduces coupling of the image states to the bulk band structure. These results are compared with predictions of a dielectric continuum model. The study of electron lateral motion shows that optical excitation creates interfacial electrons in quasifree states for motion parallel to the n-heptane/Ag(111) interface. These initially delocalized electrons decay into a localized state within a few hundred femtoseconds. The localized electrons then decay back to the metal by tunneling through the adlayer potential barrier. The localization time depends strongly on the electron's initial parallel momentum and exhibits a non-Arrhenius temperature dependence. The experimental findings are consistent with a 2-D self-trapping process in which electrons become localized by interacting with the topmost plane of the alkane layer. The energy dependence of the self-trapping rate has been modeled with an electron transfer theory. This analysis shows that self-trapping involves inter- and intramolecular vibrational modes of the overlayer and the non-Arrhenius temperature dependence is a result of a strong quantum contribution from the intramolecular modes. These results for a model interface contribute to the fundamental understanding of electron behavior at the interface between metals and molecular solids.

Download or read book Ultrafast Electron Dynamics at Dielectric metal Interfaces written by Sean Alexander Garrett-Roe and published by . This book was released on 2005 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Femtosecond Studies of Interband and Intraband Electron Dynamics at Dielectric metal Interfaces written by Chung-Ming Wong and published by . This book was released on 2000 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Dynamics of Electrons at Interfaces written by Jason Douglas McNeill and published by . This book was released on 1999 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Femtosecond Studies of Electron Dynamics and Structure at Metal molecular Interfaces written by André David Miller and published by . This book was released on 2002 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Phenomena XI written by Thomas Elsässer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the Eleventh International Conference on Ultrafast Phenomena held at Garmisch-Partenkirchen, Germany, from July 12 to 17, 1998. The biannual Ultrafast Phenomena Conferences provide a forum for dis cussion of the latest advances in ultrafast optics and their applications in science and engineering. The Garmisch conference brought together a multidisciplinary group of 440 participants from 27 countries, including 127 students. The enthu siasm of this large number of Participants, the high quality of the papers they presented and the magnificent conference site resulted in a successful and pleasant conference. Progress was reported in the technology of generating ultrashort pulses, in cluding new techniques for improving laser-pulse duration, tunability over broad wavelength ranges, output power and peak intensity. Ultrafast spectroscopy con tinues to provide new insight into fundamental processes in physics, chemistry, biology, and engineering. In addition to analyzing ultrafast phenomena, control of ultrafast dynamics now represents an important topic. Ultrafast concepts and tech niques are being applied in imaging and microscopy, high speed optoelectronics, mat~rial diagnostics and processing, reflecting the maturing of the field. Acknowledgements. Many people contributed to the success of the conference.

Download or read book Ultrafast Phenomena XII written by T. Elsaesser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest advances in ultrafast science, including ultrafast laser and measurement technology, and studies of ultrafast phenomena. It summarizes the results presented at the 12th Ultrafast Phenomena Conference and reviews the state of the art of this important and rapidly advancing field.

Download or read book Electronic Structure and Ultrafast Dynamics in Molecular Films on Metal Surfaces written by Gregory John Dutton and published by . This book was released on 2006 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Electron Dynamics of Ultrathin Films of Electrochemical Solvents Adsorbed on an Ag 111 Substrate written by Matthew Lee Strader and published by . This book was released on 2008 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Phenomena X written by Paul F. Barbara and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the Tenth International Conference on Ultrafast Phenomena held at Del Coronado, California, from May 28 to June 1, 1996. The biannual Ultrafast Phenomena Conferences provide a forum for the discussion of the latest advances in ultrafast optics and their applications in science and engineering. The Ultrafast Phenomena Conference maintains a broad international representation with 391 participants from 18 countries, including 94 students attending the conference. The multidisciplinary character of this meeting provides a cross-fertilization of ultrafast concepts and techniques among various scientific and engineering disciplines. The enthusiasm of the paticipants, the originality and quality of the papers that they presented, and the beautiful conference site combined to produce a very successful and enjoyable meeting. Progress was reported in the technology of generating ultrashort pulses, in cluding new techniques for improving laser-pulse duration, output power, wave length range, and compactness. Ultrafast spectroscopy continues to impact on and expand the knowledge base of fundamental processes in physics, chemistry, biol ogy and engineering. In addition ultrafast phenomena now extends to real-world applications in biology, high-speed communication, and material diagnostics. The Tenth Ultrafast Phenomena Conference was highlighted by a 'special event' in which the developments of the previous conferences were reviewed in a panel discussion by G. Mourou, E. Ippen, A. Migus, A. Laubereau and R. Hochstrasser.

Download or read book Dynamics at Solid State Surfaces and Interfaces Volume 2 written by Uwe Bovensiepen and published by John Wiley & Sons. This book was released on 2012-04-16 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume work covers ultrafast structural and electronic dynamics of elementary processes at solid surfaces and interfaces, presenting the current status of photoinduced processes. Providing valuable introductory information for newcomers to this booming field of research, it investigates concepts and experiments, femtosecond and attosecond time-resolved methods, as well as frequency domain techniques. The whole is rounded off by a look at future developments.

Download or read book Attosecond Nanophysics written by Peter Hommelhoff and published by John Wiley & Sons. This book was released on 2015-03-09 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Autoren geben einen tiefen wie auch umfassenden Überblick über die aktuelle Forschung im Bereich der Attosekunden-Nanophysik, d.h. einem Gebiet der nanoskaligen Festkörpersysteme und der natürlichen Zeitskala von Elektronenbewegungen.

Download or read book Dynamics at Solid State Surfaces and Interfaces Volume 1 written by Uwe Bovensiepen and published by John Wiley & Sons. This book was released on 2010-11-29 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume work covers ultrafast structural and electronic dynamics of elementary processes at solid surfaces and interfaces, presenting the current status of photoinduced processes. Providing valuable introductory information for newcomers to this booming field of research, it investigates concepts and experiments, femtosecond and attosecond time-resolved methods, as well as frequency domain techniques. The whole is rounded off by a look at future developments.

Download or read book Dynamics of Electrons Photoinjected Into Organic Semiconductors at Aromatic metal Interfaces written by Kelly Joseph Gaffney and published by . This book was released on 2001 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrafast Electron Lattice and Spin Dynamics in Metals written by Julius Hohlfeld and published by . This book was released on 1998 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics written by and published by Elsevier. This book was released on 2008-10-09 with total page 1037 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of the Handbook of Surface Science covers all aspects of the dynamics of surface processes. Two dozen world leading experts in this field address the subjects of energy exchange in gas atoms, surface collisions, the rules governing dissociative adsorption on surfaces, the formation of nanostructures on surfaces by self-assembly, and the study of surface phenomena using ultra-fast lasers. The chapters are written for both newcomers to the field as well as researchers. • Covers all aspects of the dynamics of surface processes • Provides understanding of this unique field utilizing a multitude of accurate experiments and advanced microscopic theory that allows quantum-level comparisons • Presents the concepts and tools relevant beyond surface science for catalysis, nanotechnology, biology, medicine, and materials