Study of the e{sub g} Orbitals in the Bilayer Manganite La{sub 2{minus}2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} by Using Magnetic Compton-Profile Measurement
Journal Article
·
· Physical Review Letters
From the magnetic Compton-profile (MCP) measurement, we have directly differentiated for the first time the populations in two e{sub g} -type orbitals (x{sup 2}{minus}y{sup 2} and 3z{sup 2}{minus}r{sup 2} ) in a manganite. The experimental MCP{close_quote}s along the [001] direction for La{sub 2{minus}2x} Sr{sub 1+2x} Mn{sub 2}O {sub 7} at x=0.35 and 0.42 are fitted by the theoretical profiles obtained from the (MnO{sub 6} ){sup 8{minus}} ab initio calculations. The calculation confirms that the MCP clearly detects the oxygen hybridization in the e{sub g} orbitals. The e{sub g} state is dominated by the x{sup 2}{minus}y{sup 2} -type orbital with almost constant population, while the population in the 3z{sup 2}{minus}r{sup 2} -type orbital decreases with increasing the hole concentration x .
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204644
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 86; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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