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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The classical electron band theory is a powerful tool to describe the electronic structures of solids. However, the band theory and corresponding density functional theory become inappropriate if a system comprises localized electrons in a scenario wherein strong electron correlations cannot be neglected. SrRuO3 is one such system, and the partially localized d-band electrons exhibit some interesting behaviors such as enhanced effective mass, spectral incoherency, and oppression of ferromagnetism and itinerancy. In particular, a Metal–Insulator transition occurs when the thickness of SrRuO3 approaches approximately four unit cells. In the computational studies, irrespective of the inclusion of on-site Hubbard repulsion and Hund’s coupling parameters, correctly depicting the correlation effects is difficult. Because the oxygen atoms and the symmetry of octahedra are known to play important roles in the system, scrutinizing both the electronic band structure and the lattice system of SrRuO3 is required to find the origin of the correlated behaviors. Transmission electron microscopy is a promising solution to this problem because of its integrated functionalities, which include atomic-resolution imaging and electron energy loss spectroscopy.
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참고문헌 (27)
참고문헌 신청
Ahn J S / 1999 / Spectral Evolution in (Ca, Sr)RuO3 near the Mott-Hubbard Transition / Phys. Rev. Lett 82 : 5321 ~ 5324
Autieri C / 2016 / Antiferromagnetic and xy ferro-orbital order in insulating SrRuO3 thin films with SrO termination / J. Phys.: Condens. Matter 28 : 42 ~
Bern F / 2013 / Structural, magnetic and electrical properties of SrRuO3 films and SrRuO3/SrTiO3 superlattices / J. Phys.: Condens. Matter 25 : 49 ~
Chang S H / 2011 / Thickness-dependent structural phase transition of strained SrRuO3 ultrathin films: the role of octahedral tilt / Phys. Rev. B 84 : 10 ~
Chang Y J / 2009 / Fundamental thickness limit of itinerant ferromagnetic SrRuO3 thin films / Phys. Rev. Lett 103 : 5 ~
Autieri C / 2016 / Antiferromagnetic and xy ferro-orbital order in insulating SrRuO3 thin films with SrO termination / J. Phys.: Condens. Matter 28 : 42 ~
Bern F / 2013 / Structural, magnetic and electrical properties of SrRuO3 films and SrRuO3/SrTiO3 superlattices / J. Phys.: Condens. Matter 25 : 49 ~
Chang S H / 2011 / Thickness-dependent structural phase transition of strained SrRuO3 ultrathin films: the role of octahedral tilt / Phys. Rev. B 84 : 10 ~
Chang Y J / 2009 / Fundamental thickness limit of itinerant ferromagnetic SrRuO3 thin films / Phys. Rev. Lett 103 : 5 ~
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