Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

February 2005

Comments

Copyright American Physical Society. Reprinted from Physical Review B, Volume 71, Issue 7, Article 075117, February 2005, 5 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevB.71.075117

Abstract

Pump-probe Kerr spectroscopy reveals evidence for transient photoinduced magnetization (PIM) near Tc in the colossally magnetoresistive manganite La0.7Ca0.3MnO3. For temperatures above Tc, the PIM signature reaches full strength at the field-driven magnetic phase transition, while below Tc it exhibits a magnetic activation threshold of ~0.5 T. We compare the temperature dependence of the effect with diffuse spin scattering previously measured with neutrons and discuss these findings in the context of phase separation near Tc.

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Date Posted: 29 November 2005

This document has been peer reviewed.