Optical Intersubband Transitions and Femtosecond Dynamics in Ag <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>/</mi></math></span>Fe(100) Quantum Wells

S. Ogawa; H. Nagano; H. Petek

doi:10.1103/PhysRevLett.88.116801

Optical Intersubband Transitions and Femtosecond Dynamics in Ag $/$ Fe(100) Quantum Wells

S. Ogawa, H. Nagano, and H. Petek

Phys. Rev. Lett. 88, 116801 – Published 28 February 2002

Abstract

The optical intersubband transitions and femtosecond dynamics of electrons in quantum well states in $Ag / Fe (100)$ are investigated by interferometric time-resolved two-photon photoemission. The quantum well wave functions and transition probabilities are evaluated from the two-photon photoemission resonance energies and intensities using an extended phase accumulation model. Direct femtosecond pump-probe correlation measurements elucidate the importance of interfaces in confined structures.

Received 25 October 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.116801

Authors & Affiliations

S. Ogawa^1,2, H. Nagano¹, and H. Petek³

¹Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-0395, Japan
²PRESTO, Japan Science and Technology Cooperation, Tokyo 102-0074, Japan
³Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260