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Liu WC, Chiu YH, Kung YY, Liao PY, Cheng CH, Chih YC, Tsai YW, Chu CH, Lai CH, Huang DJ, Soo YL, Chang SL. Revisiting La 0.5Sr 1.5MnO 4 lattice distortion and charge ordering with multi-beam resonant diffraction. ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES 2017; 73:46-53. [PMID: 28042803 DOI: 10.1107/s2053273316013759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/27/2016] [Indexed: 11/11/2022]
Abstract
Sinusoidal wave type distortions of La0.5Sr1.5MnO4 in the low-temperature orthorhombic phase were observed using multi-beam resonant X-ray diffraction (MRXD) with (7/4 7/4 0) fractional primary diffraction. Two four-beam diffractions with opposite asymmetry were measured at 6.5545 keV and compared with the curves simulated by the dynamical X-ray diffraction theory. This approach provides the possibility of resolving the distortion modes which are perpendicular to the momentum transfer by a single azimuthal scan. The paper also demonstrates the sensitivity of MRXD profiles versus incident X-ray energy in the vicinity of the Mn K edge to the charge disproportion between the two manganese sites, reconfirming the small charge disproportion feature.
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Affiliation(s)
- Wen Chung Liu
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yi Hua Chiu
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ying Yu Kung
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Po Yu Liao
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chih Hao Cheng
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yu Chieh Chih
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yi Wei Tsai
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chia Hung Chu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chia Hung Lai
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Di Jing Huang
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Yun Liang Soo
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Shih Lin Chang
- Department of Physics, Tsing Hua University, Hsinchu, 30013, Taiwan
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Ye F, Chi S, Fernandez-Baca JA, Moreo A, Dagotto E, Lynn JW, Mathieu R, Kaneko Y, Tokura Y, Dai P. Electronic self-organization in the single-layer manganite Pr1-xCa1+xMnO4. PHYSICAL REVIEW LETTERS 2009; 103:167202. [PMID: 19905720 DOI: 10.1103/physrevlett.103.167202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Indexed: 05/28/2023]
Abstract
We use neutron scattering to investigate the doping evolution of the magnetic correlations in the single-layer manganite Pr1-xCa1+xMnO4, away from the x=0.5 composition where the CE-type commensurate antiferromagnetic (AF) structure is stable. We find that short-range incommensurate spin correlations develop as the system is electron doped (x<0.5), which coexist with the CE-type AF order. This suggests that electron doping in this system induces an inhomogeneous electronic self-organization, where commensurate AF patches with x=0.5 are separated by electron-rich domain walls with short-range magnetic correlations. This behavior is strikingly different than for the perovskite Pr1-xCaxMnO3, where the long-range CE-type commensurate AF structure is stable over a wide range of electron or hole doping around x=0.5.
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Affiliation(s)
- F Ye
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, USA.
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