
Proceedings Paper
The perspectives of femtosecond imaging and spectroscopy of complex materials using electronsFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
The coexistence of various electronic and structural phases that are close in free-energy is a hallmark in strongly
correlated electron systems with emergent properties, such as metal-insulator transition, colossal magnetoresistance, and
high-temperature superconductivity. The cooperative phase transitions from one functional state to another can involve
entanglements between the electronically and structurally ordered states, hence deciphering the fundamental mechanisms
is generally difficult and remains very active in condensed matter physics and functional materials research. We outline
the recent ultrafast characterizations of 2D charge-density wave materials, including the nonequilibrium electron
dynamics unveiled by ultrafast optical spectroscopy-based techniques sensitive to the electronic order parameter. We
also describe the most recent findings from ultrafast electron crystallography, which provide structural aspects to
correlate lattice dynamics with electronic evolutions to address the two sides of a coin in the ultrafast switching of a
cooperative state. Combining these results brings forth new perspectives and a fuller picture in understanding lightmatter
interactions and various switching mechanisms in cooperative systems with many potential applications. We also
discuss the prospects of implementing new ultrafast electron imaging as a local probe incorporated with femtosecond
select-area diffraction, imaging and spectroscopy to provide a full scope of resolution to tackle the more challenging
complex phase transitions on the femtosecond-nanometer scale all at once based on a recent understanding of the spacespace-
charge-driven emittance limitation on the ultimate performance of these devices. The projection shows promising
parameter space for conducting ultrafast electron micordiffraction at close to single-shot level, which is supported by the
latest experimental characterization of such a system.
Paper Details
Date Published: 5 September 2014
PDF: 9 pages
Proc. SPIE 9198, Ultrafast Nonlinear Imaging and Spectroscopy II, 91980Q (5 September 2014); doi: 10.1117/12.2062257
Published in SPIE Proceedings Vol. 9198:
Ultrafast Nonlinear Imaging and Spectroscopy II
Zhiwen Liu, Editor(s)
PDF: 9 pages
Proc. SPIE 9198, Ultrafast Nonlinear Imaging and Spectroscopy II, 91980Q (5 September 2014); doi: 10.1117/12.2062257
Show Author Affiliations
Chong-Yu Ruan, Michigan State Univ. (United States)
Phiilp M. Duxbury, Michigan State Univ. (United States)
Phiilp M. Duxbury, Michigan State Univ. (United States)
Martin Berz, Michigan State Univ. (United States)
Published in SPIE Proceedings Vol. 9198:
Ultrafast Nonlinear Imaging and Spectroscopy II
Zhiwen Liu, Editor(s)
© SPIE. Terms of Use
