DocumentCode :
444268
Title :
Coupled charge-spin correlations in the pyrochlore Tl2Mn2O7 probed by ultrafast mid-infrared spectroscopy
Author :
Prasankumar, R.P. ; Taylor, A.J. ; Averitt, R.D. ; Okamura, H. ; Imai, H. ; Shimakawa, Y. ; Kubo, Y.
Author_Institution :
Condensed Matter & Thermal Phys., Los Alamos Nat. Lab., NM, USA
Volume :
2
fYear :
2005
fDate :
22-27 May 2005
Firstpage :
739
Abstract :
An optical-pump, mid-infrared (IR)-probe system is used to investigate ultrafast temperature-dependent dynamics in the magnetoresistive pyrochlore Tl2Mn2O7. We observe a prolonged carrier density increase, related to a scaling of the carrier lifetime with spin correlations.
Keywords :
carrier density; carrier lifetime; high-speed optical techniques; infrared spectroscopy; magnetoresistance; manganese compounds; optical pumping; thallium compounds; Tl2Mn2O7; carrier density; coupled charge-spin correlation; magnetoresistive pyrochlore; mid-infrared-probe system; optical-pump; pyrochlore Tl2Mn2O7 probe; ultrafast mid-infrared spectroscopy; ultrafast temperature-dependent dynamics; Charge carrier density; Colossal magnetoresistance; Magnetic materials; Nonlinear optics; Optical distortion; Optical pumping; Plasma temperature; Probes; Reflectivity; Ultrafast optics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
Type :
conf
DOI :
10.1109/QELS.2005.1548922
Filename :
1548922
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=444268
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