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Advances in Ultrafast Control and Probing of Correlated-Electron Materials

DOI: 10.1109/JSTQE.2011.2105465 DOI Help

Authors: Simon Wall (University of Oxford) , Matteo Rini (Lawrence Berkeley National Laboratory, Berkeley) , Sarnjeet Dhesi (Diamond Light Source) , Robert W. Schoenlein (Lawrence Berkeley National Laboratory, Berkeley) , Andrea Cavalleri (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Selected Topics In Quantum Electronics, Ieee Journal Of , VOL 99 , PAGES 1-11

State: Published (Approved)
Published: February 2011

Abstract: In this paper, we present recent results on ultrafast control and probing of strongly correlated-electron materials. We focus on magnetoresistive manganites, applying excitation and probing wavelengths that cover the mid-IR to the soft X-rays. In analogy with near-equilibrium “filling” and “bandwidth” control of phase transitions, our approach uses both visible and mid-IR pulses to stimulate the dynamics by exciting either charges across electronic bandgaps or specific vibrational resonances. X-rays are used to unambiguously measure the microscopic electronic, orbital, and structural dynamics. Our experiments dissect and separate the nonequilibrium physics of these compounds, revealing the complex interplay and evolution of spin, lattice, charge, and orbital degrees of freedoms in the time domain.

Journal Keywords: Manganites ; Photoinduced Phase Transitions ; Ultrafast Spectroscopy ; Vibrational Excitation

Subject Areas: Physics

Instruments: I06-Nanoscience

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