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Atomic and Laser Physics
Credit: Jack Hobhouse

Andrea Cavalleri

Professor of Physics

Sub department

  • Atomic and Laser Physics
andrea.cavalleri@physics.ox.ac.uk
Telephone: 01865 (2)72365
Clarendon Laboratory, room 316.3
  • About
  • Publications

Time-resolved studies of phase transition dynamics in strongly correlated manganites

Journal of Physics: Conference Series 148 (2009)

Authors:

M Rini, R Tobey, N Dean, S Wall, H Ehrke, Y Zhu, Y Tomioka, Y Tokura, RW Schoenlein, A Cavalleri

Abstract:

Ultrafast light pulses can be used to control electronic, magnetic and structural phases of complex solids. Here, we investigate the dynamics of insulator-metal phase transitions in colossal magnetoresistive (CMR) manganites by a combination of femtosecond visible-to-midinfrared pump-probe techniques and transport measurements. We show that an insulator-metal transition can be stimulated in CMR manganites by both above bandgap excitation and selective excitation of individual vibrational degrees of freedom. These two approaches rely on the ultrafast manipulation of parameters controlling the electronic filling and the electronic bandwidth respectively, extending the concepts of filling and bandwidth control to the ultrafast timescale. The ultrafast vibrational control of correlated-electron phases may provide new insights into the role played by lattice vibrations in determining the electronic properties of complex solids. © 2009 IOP Publishing Ltd.
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Clocking the Collapse of a Mott Gap

ULTRAFAST PHENOMENA XVI 92 (2009) 167-+

Authors:

S Wall, D Brida, HP Ehrke, A Ardavan, S Bonora, H Matsusaki, H Uemura, Y Takahashi, T Hasegawa, H Okamoto, G Cerullo, A Cavalleri
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Coherent Orbital Waves in Manganites

ULTRAFAST PHENOMENA XVI 92 (2009) 170-+

Authors:

S Wall, D Polli, M Rini, P Dharmalingam, AT Boothroyd, Y Tomioka, Y Tokura, RW Schoenlein, G Cerullo, A Cavalleri
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Nonthermal Melting of Orbital Order in La1/2Sr3/2MnO4 by Coherent Excitation of a Mn-O Stretching Mode

ULTRAFAST PHENOMENA XVI 92 (2009) 182-184

Authors:

Raanan I Tobey, Dharmalingam Prabhakaran, Andrew T Boothroyd, Andrea Cavalleri
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Time-resolved X-ray Absorption Spectroscopy of Photoinduced Insulator-Metal Transition in a Colossal Magnetoresistive Manganite

Springer Series in Chemical Physics Springer Nature 92 (2009) 191-193

Authors:

M Rini, R Tobey, S Wall, Y Zhu, Y Tomioka, Y Tokura, A Cavalleri, RW Schoenlein
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