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Updated: Jul 16, 2026

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
Published on: April 12, 2019
Charge ordering due to magnetic symmetry breaking
1Tokura Spin Superstructure Project, ERATO Japan Science and Technology Corporation, National Institute of Advanced Industrial Science and Technology, Central 4, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan. igor@issp.u-tokyo.ac.jp
Both transitions in 50% doped manganites are magnetic. The Néel temperature (T(N)) marks an order-disorder transition, while charge ordering temperature (T(CO)) affects spin coherence.
Area of Science:
- Condensed matter physics
- Materials science
- Magnetism
Background:
- Manganites exhibit complex phase transitions.
- Understanding magnetic and electronic properties is crucial.
Purpose of the Study:
- To clarify the magnetic nature of transitions in 50% doped manganites.
- To investigate the relationship between magnetic, electronic, and lattice structures.
Main Methods:
- Analysis of magnetic transitions at Néel temperature (T(N)) and charge ordering temperature (T(CO)).
- Examination of spin dynamics and anisotropy.
Main Results:
- Both T(N) and T(CO) transitions are identified as magnetic phenomena.
- T(N) involves order-disorder transition in ferromagnetic zigzag chains.
- Spin coherence is lost around T(CO), leading to anisotropic magnetic and electronic structures.
Conclusions:
- The magnetic structure below T(CO) is highly anisotropic, influenced by lattice distortion.
- This anisotropy explains the stability of the charge-orbital pattern above T(N).
- Lattice interactions dictate the type of phase transition at T(N).
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