2010 Fiscal Year Final Research Report
Charge and orbital ordering and the dynamics of layered manganite films
| Project/Area Number |
21760017
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
TAKAHASHI Kei The Institute of Physical and Chemical Research, 交差相関超構造研究チーム, 副チームリーダー (90469932)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 強相関エレクトロニクス / スピンエレクトロニクス / 酸化物薄膜 / 電荷軌道秩序 / 酸化物金属電極 |
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| Research Abstract |
In order to control the charge and orbital ordered pattern by epitaxial strain, Nd_<0.25>Sr_<1.75>MnO_4 thin films were fabricated on the (100) surface of LaSrGaO_4 and LaSrAlO_4 substrates. Due to the anisotropic strain in the MnO_2 plane, the orientation-controlled films were stabilized. Measurements of highly anisotropic optical spectra indicate that the direction of the ferroic ordering of d_<3x2-r2> orbitals can be controlled by external uniaxial pressure, implying a potential for a switching device combined with piezoelectric crystals.
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