ESR study in lightly doped La_(1-x)Sr_(x)MnO_(3)

Details ESR study in lightly doped La_(1-x)Sr_(x)MnO_(3) ESR study in lightly doped La_(1-x)Sr_(x)MnO_(3)

1999-08-06

arxiv.org/abs/cond-mat/9908112v1

Physics

Condensed Matter

Strongly Correlated Electrons

19 pages, 7 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.61.6213

This is the first systematic ESR investigation of La_(1-x)Sr_(x)MnO_(3) single crystals for Sr concentrations x < 0.2. The rich phase diagram of this compound, which is dominated by the Jahn-Teller effect of Mn^(3+), is a matter of actual interest in connection with giant magnetoresistance phenomena. The ESR signal, which is due to both Mn^(3+) and Mn^(4+), directely probes the suppression of the Jahn-Teller distortion with increasing Sr concentration and reveals all characteristic structural and magnetic phase transitions.

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