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Title: Time-resolved Studies of Phase Transition Dynamics in Strongly Correlated Manganites

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.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Materials Sciences Division
OSTI Identifier:
985367
Report Number(s):
LBNL-3667E
TRN: US201016%%1951
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: THE LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA, Osaka, Japan, 11/11/08-11/15/08
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DEGREES OF FREEDOM; EXCITATION; LATTICE VIBRATIONS; TRANSPORT; manganite, femtosecond x-ray, CMR

Citation Formats

Rini, M, Tobey, R, Dean, N, Wall, S, Ehrke, H, Zhu, Y, Tomioka, Y, Tokura, Y, Schoenlein, R W, and Cavalleri, A. Time-resolved Studies of Phase Transition Dynamics in Strongly Correlated Manganites. United States: N. p., 2008. Web.
Rini, M, Tobey, R, Dean, N, Wall, S, Ehrke, H, Zhu, Y, Tomioka, Y, Tokura, Y, Schoenlein, R W, & Cavalleri, A. Time-resolved Studies of Phase Transition Dynamics in Strongly Correlated Manganites. United States.
Rini, M, Tobey, R, Dean, N, Wall, S, Ehrke, H, Zhu, Y, Tomioka, Y, Tokura, Y, Schoenlein, R W, and Cavalleri, A. 2008. "Time-resolved Studies of Phase Transition Dynamics in Strongly Correlated Manganites". United States. https://www.osti.gov/servlets/purl/985367.
@article{osti_985367,
title = {Time-resolved Studies of Phase Transition Dynamics in Strongly Correlated Manganites},
author = {Rini, M and Tobey, R and Dean, N and Wall, S and Ehrke, H and Zhu, Y and Tomioka, Y and Tokura, Y and Schoenlein, R W and Cavalleri, A},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/985367}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 05 00:00:00 EST 2008},
month = {Fri Dec 05 00:00:00 EST 2008}
}

Conference:
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