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Electronic structure of detwinned BaFe2As2from photoemission and first principles
Kim, Yeongkwan,Oh, Hyungju,Kim, Chul,Song, Dongjoon,Jung, Wonsig,Kim, Beomyoung,Choi, Hyoung Joon,Kim, Changyoung,Lee, Bumsung,Khim, Seunghyun,Kim, Hyungjoon,Kim, Keehoon,Hong, Jongbeom,Kwon, Yongseun American Physical Society 2011 Physical review. B, Condensed matter and materials Vol.83 No.6
Interlayer-state-driven superconductivity inCaC6studied by angle-resolved photoemission spectroscopy
Kyung, Wonshik,Kim, Yeongkwan,Han, Garam,Leem, Choonshik,Kim, Chul,Koh, Yoonyoung,Kim, Beomyoung,Kim, Youngwook,Kim, Jun Sung,Kim, Keun Su,Rotenberg, Eli,Denlinger, Jonathan D.,Kim, Changyoung American Physical Society 2015 Physical review. B, Condensed matter and materials Vol.92 No.22
Spin and orbital angular momentum structure of Cu(111) and Au(111) surface states
Kim, Beomyoung,Kim, Choong H.,Kim, Panjin,Jung, Wonsig,Kim, Yeongkwan,Koh, Yoonyoung,Arita, Masashi,Shimada, Kenya,Namatame, Hirofumi,Taniguchi, Masaki,Yu, Jaejun,Kim, Changyoung American Physical Society 2012 Physical review. B, Condensed matter and materials Vol.85 No.19
Warping effects in the band and angular-momentum structures of the topological insulator Bi2Te3
Jung, Wonsig,Kim, Yeongkwan,Kim, Beomyoung,Koh, Yoonyoung,Kim, Chul,Matsunami, Masaharu,Kimura, Shin-ichi,Arita, Masashi,Shimada, Kenya,Han, Jung Hoon,Kim, Juyoung,Cho, Beongki,Kim, Changyoung American Physical Society 2011 Physical review. B, Condensed matter and materials Vol.84 No.24
Oxygen-content-dependent electronic structures of electron-doped cuprates
Song, Dongjoon,Park, Seung Ryong,Kim, Chul,Kim, Yeongkwan,Leem, Choonshik,Choi, Sungkyun,Jung, Wonsig,Koh, Yoonyoung,Han, Garam,Yoshida, Yoshiyuki,Eisaki, Hiroshi,Lu, D. H.,Shen, Z.-X.,Kim, Changyoung American Physical Society 2012 Physical review. B, Condensed matter and materials Vol.86 No.14
Experimental Observation of Hidden Berry Curvature in Inversion-Symmetric Bulk 2H−WSe2
Cho, Soohyun,Park, Jin-Hong,Hong, Jisook,Jung, Jongkeun,Kim, Beom Seo,Han, Garam,Kyung, Wonshik,Kim, Yeongkwan,Mo, S.-K.,Denlinger, J. D.,Shim, Ji Hoon,Han, Jung Hoon,Kim, Changyoung,Park, Seung Ryong American Physical Society 2018 Physical Review Letters Vol.121 No.18
ARPES study of the epitaxially grown topological crystalline insulator SnTe(111)
Zhang, Yi,Liu, Zhongkai,Zhou, Bo,Kim, Yeongkwan,Yang, Lexian,Ryu, Hyejin,Hwang, Choongyu,Chen, Yulin,Hussain, Zahid,Shen, Zhi-Xun,Mo, Sung-Kwan Elsevier 2017 Journal of electron spectroscopy and related pheno Vol.219 No.-
<P><B>Abstract</B></P> <P>SnTe is a prototypical topological crystalline insulator, in which the gapless surface state is protected by a crystal symmetry. The hallmark of the topological properties in SnTe is the Dirac cones projected to the surfaces with mirror symmetry, stemming from the band inversion near the L points of its bulk Brillouin zone, which can be measured by angle-resolved photoemission. We have obtained the (111) surface of SnTe film by molecular beam epitaxy on BaF<SUB>2</SUB>(111) substrate. Photon-energy-dependence of <I>in situ</I> angle-resolved photoemission, covering multiple Brillouin zones in the direction perpendicular to the (111) surface, demonstrate the projected Dirac cones at the Γ ¯ and M ¯ points of the surface Brillouin zone. In addition, we observe a Dirac-cone-like band structure at the Γ point of the bulk Brillouin zone, whose Dirac energy is largely different from those at the Γ ¯ and M ¯ points.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Topological crystalline insulator SnTe(111) thin film was grown on BaF<SUB>2</SUB>(111) substrate by using molecular beam epitaxy. </LI> <LI> The electronic structures of SnTe(111) with surface Dirac cones were studied by a wide-range photon-energy-dependent angle-resolved photoemission spectroscopy. </LI> <LI> A Dirac-cone-like band structure was observed at the Γ point of the bulk Brillouin zone of SnTe(111). </LI> </UL> </P>