Femtosecond spectroscopy and new possibilities for a correlated electron system study

Yurii E. Lozovik; S. A. Kovalenko; A. L. Dobryakov; D. V. Lisin; V. M. Farztdinov; Yu. A. Matveets; S. P. Merkulova

doi:10.1117/12.341453

5 March 1999 Femtosecond spectroscopy and new possibilities for a correlated electron system study

Yurii E. Lozovik, S. A. Kovalenko, A. L. Dobryakov, D. V. Lisin, V. M. Farztdinov, Yu. A. Matveets, S. P. Merkulova

Proceedings Volume 3735, ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics; (1999) https://doi.org/10.1117/12.341453
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

The new method of investigation of Fermi surface and Fermi liquid (FL) versus non-Fermi liquid (NFL) behavior in strongly correlated electron systems by femtosecond laser spectroscopy is discussed. The method consists in the study of spectral dependence of nonequilibrium charge carriers relaxation time by femtosecond pump-supercontinuum probe technique. The usefulness of this method is demonstrated on weakly correlated electron systems in Au and Cu and strongly correlated electron system in high T_c oxide-superconductor YBa₂Cu₃O_7-(delta ) by studying the temporary changes of optical density of thin metal films in wide spectral region of probing $HBAR(omega) _probe equals 1.6 - 3.2 eV. The relaxation rate of charge carriers sharply slows down in the spectral area, related to the optical transitions into the vicinity of the Fermi level. The position of this peak gives the location of the Fermi surface (FS). The form of peak gives a unique information on the damping rate of quasiparticles near FS and thus on the FL vs NFL behavior.

Citation Download Citation

Yurii E. Lozovik, S. A. Kovalenko, A. L. Dobryakov, D. V. Lisin, V. M. Farztdinov, Yu. A. Matveets, and S. P. Merkulova "Femtosecond spectroscopy and new possibilities for a correlated electron system study", Proc. SPIE 3735, ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics, (5 March 1999); https://doi.org/10.1117/12.341453

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available