Synthesis of semimetal A(3)Bi (A = Na, K) thin films by molecular beam epitaxy

Wen Jing; Guo Hua; Yan Chen-Hui; Wang Zhen-Yu; Chang Kai; Deng Peng; Zhang Teng; Zhang Zhi-Dong; Ji Shuai-Hua; Wang Li-Li; He Ke; Ma Xu-Cun; Chen Xi; Xue Qi-Kun

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Synthesis of semimetal A(3)Bi (A = Na, K) thin films by molecular beam epitaxy

机译：分子束外延法合成半金属A（3）Bi（A = Na，K）薄膜

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Three-dimensional (3D) Dirac cones are predicted to reside in semimetals A(3)Bi (A = Na, K). By using molecular beam epitaxy (MBE) and scanning tunneling microscopy (STM), we have successfully established the growth conditions for Na3Bi thin films on Si(1 1 1)-7 x 7, and determined that the lattice of Na3Bi is rotated by 30 degree with respect to that of Si(1 1 1)-7 x 7. The Na3Bi/Si( 1 1 1)-7 x 7 thin film was further used as the substrate for the growth of K3Bi. The 3D Dirac-cone-like electronic band structures of Na3Bi and K3Bi have been clearly revealed by angle resolved photoelectron spectroscopy (ARPES). (C) 2014 Elsevier B.V. All rights reserved.

机译：预计三维（3D）狄拉克锥位于半金属A（3）Bi（A = Na，K）中。通过使用分子束外延（MBE）和扫描隧道显微镜（STM），我们成功建立了Si（1 1 1）-7 x 7上Na3Bi薄膜的生长条件，并确定Na3Bi的晶格旋转了30相对于Si（1 1 1）-7 x 7的角度，Na 3 Bi / Si（1 1 1）-7 x 7薄膜进一步用作K3Bi生长的衬底。 Na3Bi和K3Bi的3D Dirac-锥状电子能带结构已通过角度分辨光电子能谱（ARPES）清楚地揭示出来。（C）2014 Elsevier B.V.保留所有权利。

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来源
《Applied Surface Science》 |2015年第1期|213-217|共5页
作者
Wen Jing; Guo Hua; Yan Chen-Hui; Wang Zhen-Yu; Chang Kai; Deng Peng; Zhang Teng; Zhang Zhi-Dong; Ji Shuai-Hua; Wang Li-Li; He Ke; Ma Xu-Cun; Chen Xi; Xue Qi-Kun;
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Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China|Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

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正文语种 eng
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关键词
Na3Bi; K3Bi; STM; ARPES; MBE;

机译：Na3Bi;K3Bi;STM;ARPES;MBE;

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Synthesis of semimetal A(3)Bi (A = Na, K) thin films by molecular beam epitaxy

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