Dimensionality and doping effect on the Core-level X-ray photoemission satellites in layered ruthenates.

11:15 AM–2:15 PM, Thursday, March 19, 2009
Room: 334

Sponsoring Units: DMP GMAG
Chair: Zhiqiang Mao, Tulane University

Abstract ID: BAPS.2009.MAR.W30.10

Abstract: W30.00010 : Dimensionality and doping effect on the Core-level X-ray photoemission satellites in layered ruthenates.*

1:27 PM–1:39 PM

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Authors:

Haizhong Guo
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

Yi Li
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

Biao Hu
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

Rongying Jin
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

E.W. Plummer
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

Jiandi Zhang
(Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA)

D. Urbina
(Department of Physics, FIU, Miami, FL 33199, USA)

Tijiang Liu
(Physics Department, Tulane University, New Orleans, LA 70118, USA)

David Fobes
(Physics Department, Tulane University, New Orleans, LA 70118, USA)

Zhiqiang Mao
(Physics Department, Tulane University, New Orleans, LA 70118, USA)

Core-level photoelectron spectra of the layered perovskite crystal Sr$_{n+1}$Ru$_{n}$O$_{3n+1}$ (n = 1, 2, and 3) and Mn-doped Sr$_{3}$Ru$_{2}$O$_{7}$ are investigated by x-ray photoemission spectroscopy (XPS) techniques. The Sr 3$d$ and Ru 3$d$ core-level spectra exhibit a two-peak structure, screened and unscreened peaks, indicating strong correlation effects among Ru 4$d$ electrons. However, there are little changes of the core-level satellite features with n, suggesting the electron-electron correlation is mainly confined in the RuO$_{2}$ plane. On the other hand, doping of Mn will drastically affect the core-level spectral weight, reflecting the doping-induced metal-to-insulator transition in the doped system. The position of Ru-core levels remain the same, thus, indicating no doping-induced change of Ru valence.

*The work was supported by NSF-DMR0346826 and DOD AMO-W911NF-07-0532.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.MAR.W30.10

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Bulletin of the American Physical Society

2009 APS March Meeting

Volume 54, Number 1

Monday–Friday, March 16–20, 2009; Pittsburgh, Pennsylvania

Session W30: Focus Session: Ruthenates

Abstract: W30.00010 : Dimensionality and doping effect on the Core-level X-ray photoemission satellites in layered ruthenates.*

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