A new tunable topological platform with terahertz band gap: Pb1-xSnxSe

被引：1

作者：

Krizman, G. ^{[1
]}

Assaf, B. A. ^{[1
,2
]}

Bauer, G. ^{[3
]}

Springholz, G. ^{[3
]}

Ferreira, R. ^{[1
]}

Bastard, G. ^{[1
]}

de Vaulchier, L-A ^{[1
]}

Guldner, Y. ^{[1
]}

机构：

[1] Sorbonne Univ, CNRS, Univ PSL, Lab Phys,Ecole Normale Super,ENS, 24 Rue Lhomond, F-75005 Paris, France

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[3] Johannes Kepler Univ Linz, Inst Halbeiter & Festkorperphys, Altenberger Str 69, A-4040 Linz, Austria

来源：

2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2019年

关键词：

D O I：

10.1109/irmmw-thz.2019.8873784

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：

In topological insulator thin films, new states of matter can be generated by hybridizing the massless Dirac states that occur at the topological insulator surface. In this work, we experimentally introduce a platform where this hybridization can be continuously tuned: the PbSnSe topological superlattice. Using magnetooptical transmission spectroscopy on high quality molecular beam epitaxy grown PbSnSe/ PbEuSe superlattices, we demonstrate that the energy gap emerging from this hybridization can be tuned with temperature from 1 to 10 THz. The engineering of topological states is a promising road to achieve photo detection and/or photoemission in the terahertz range.

引用

页数：2

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