Phys. Rev. Lett. 84, 2710–2713 (2000)Pressure Tuning of Magnetic Interactions in Layered (La0.6Nd0.4)1.2Sr1.8Mn2O7 ManganiteReceived 24 November 1999; published in the issue dated 20 March 2000 The effect of pressure of up to 9 GPa on the magnetic and structural properties of layered (La0.6Nd0.4)1.2Sr1.8Mn2O7 manganite has been investigated. Pressure shifts the Mn atoms from the center of each bilayer towards the adjacent bilayer. The observed shift of the Mn atoms involves mainly a charge redistribution within the d3z2-r2 axial orbital. The decrease in the interbilayer spacing and the shift of the Mn atoms away from the center of each bilayer result in increased magnetic and electronic coupling between the adjacent bilayers along the c axis. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.2710
DOI:
10.1103/PhysRevLett.84.2710
PACS:
75.30.Vn, 61.50.Ks, 62.50.+p
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