G. H. Ahn
Hanyang University
11 Papers
22 Citations
G. H. Ahn is an academic researcher from Hanyang University. The author has contributed to research in topics: Doping & Electronic structure. The author has an hindex of 4, co-authored 8 publications.
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Papers
Tunable resistivity of correlated VO2(A) and VO2(B) via tungsten doping.
TL;DR: It is found that the resistivity ofVO2(A) and VO2(B) is widely tunable by doping them with tungsten ions, and is appealing for next-generation electronic devices.
Infrared Spectroscopic Evidences of Strong Electronic Correlations in (Sr1-xLax)3Ir2O7.
TL;DR: The experiments revealed hallmarks of strong electronic correlations in the evolution of the electronic response across the filling-controlled insulator-metal transition and the sum rule and the extended Drude model analyses indicated a large mass enhancement.
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Magnetically driven band shift and metal-insulator transition in spin-orbit-coupled S r 3 ( I r 1 − x R u x ) 2 O 7
S.Y. Song,Sang Wook Kim,G. H. Ahn,Jungyoon Seo,Julian L. Schmehr,Michael Aling,Stephen D. Wilson,Yeongkwan Kim,S. J. Moon +8 more
TL;DR: In this article, a combined infrared and angle-resolved photoemission study of the electronic response of three compounds was performed, and it was shown that the temperature-induced metal-insulator transition of the three compounds exhibits the characteristic feature of the effective total angular momentum of the antiferromagnetic Mott state.
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Sr 3 Ir 2 O 7 F 2 : Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
Christi Peterson,Michael W. Swift,Zach Porter,Raphaële J. Clément,Guang Wu,G. H. Ahn,S. J. Moon,Bryan C. Chakoumakos,Jacob Ruff,Huibo Cao,Chris G. Van de Walle,Stephen D. Wilson +11 more
TL;DR: The topochemical transformation of single crystals of the Ir metal ion into a band insulator via fluorine insertion was reported in this article, where the spin-orbit coupling inherent in the Ir ion was exploited to drive the process.
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Doping and temperature evolutions of optical response of Sr 3 (Ir 1-x Ru x ) 2 O 7
TL;DR: In this article, optical spectroscopic study of the Sr3(Ir1-xRux)2O7 system over a wide doping regime was performed and the authors found that the changes in the electronic structure occur in the limited range of the concentration of Ru ions where the insulator-metal transition occurs.
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