Infrared spectroscopic ellipsometry and optical spectroscopy of plasmons in classic 3D topological insulators

被引：7

作者：

Mamedov, Nazim T. ^{[1
]}

Alizade, Elvin H. ^{[1
]}

Jahangirli, Zakir A. ^{[1
,2
]}

Aliev, Ziya S. ^{[1
,3
]}

Abdullayev, Nadir A. ^{[1
]}

Mammadov, Samir N. ^{[4
]}

Amiraslanov, Imamaddin R. ^{[1
,5
]}

Shim, Yong-Gu ^{[6
]}

Wakita, Kazuki ^{[7
]}

Ragimov, Sadiyar S. ^{[1
]}

Bayramov, Ayaz I. ^{[1
]}

Babanly, Mahammad B. ^{[8
]}

Shikin, Alexander M. ^{[9
]}

Chulkov, Evgueni V. ^{[9
,10
,11
,12
]}

机构：

[1] Azerbaijan Natl Acad Sci, Inst Phys, AZ-1143 Baku, Azerbaijan

[2] Azerbaijan Tech Univ, Dept Phys, H Javid Ave 25, AZ-1073 Baku, Azerbaijan

[3] Azerbaijan State Oil & Ind Univ, Nanomat & Nanotechnol Ctr, AZ-1010 Baku, Azerbaijan

[4] SPECS Surface Nano Anal GmbH, Voltastr 5, D-13355 Berlin, Germany

[5] Baku State Univ, Inst Phys Problems, Zahid Xalilov St 23, AZ-1148 Baku, Azerbaijan

[6] Osaka Prefecture Univ, Grad Sch Engn, Gakuen Cho 1-1, Sakai, Osaka 5998531, Japan

[7] Chiba Inst Technol, 2-17-1 Tsudanuma, Narashino, Chiba 2750016, Japan

[8] Azerbaijan Natl Acad Sci, Inst Catalysis & Inorgan Chem, AZ-1143 Baku, Azerbaijan

[9] St Petersburg State Univ, Dept Solid State Elect, St Petersburg 198504, Russia

[10] Univ Basque Country, CSIC, Ctr Mixto, CFM,MPC, Donostia San Sebastian 20018, Basque Country, Spain

[11] Univ Basque Country, Dept Fis Mat, Donostia San Sebastian 20080, Basque Country, Spain

[12] DIPC, Donostia San Sebastian 20018, Basque Country, Spain

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2019年 / 37卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

ELECTRONIC BAND-STRUCTURE; REFINEMENT;

D O I：

10.1116/1.5122776

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Narrow bandgap Bi2Se3, Bi2Te3, and Sb2Te3, commonly referred to as classic 3D topological insulators, were studied at room temperature by spectroscopic ellipsometry and optical reflection spectroscopy over the mid-IR-near-infrared photon energy range. Complementarily, Hall measurements were performed. Plasmons in optical loss function and reflection coefficient were identified. The conventional approach based on the high frequency dielectric constant was shown to work well in the description of plasmons in Bi2Se3 and Sb2Te3 and to fail in the case of a similar compound, Bi2Te3. The obtained results are discussed in terms of single- and multivalley approaches to the studied samples with taking the details of the calculated band structure into account. Published by the AVS.

引用

页数：6

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