Determination of the Verdet constant in the topological insulator Bi1.1Sb0.9Te2S

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-03-01 DOI:10.1016/j.matlet.2025.138325

Yulia E. Kovalenko , Michael V. Yakushev , Vladimir I. Grebennikov , Milan Orlita , Konstantin A. Kokh , Oleg E. Tereshchenko , Tatyana V. Kuznetsova

引用次数: 0

Abstract

The electronic properties of thin single crystals of the topological insulator Bi_1.1Sb_0.9Te₂S were studied by magneto-optical spectroscopy. A sharp edge of the absorption band and Fabry-Perot oscillations in the transmission spectra measured at a temperature of 4.2 K made it possible to estimate the band gap as 0.31 eV and the refractive index 6. The application of magnetic fields up to 11 T induced a decrease in the amplitude of the oscillations attributed to the Faraday effect with an average (over the spectral range from 0.05 to 0.31 eV) Verdet constant of 2.5·10³ degrees/cm/T.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive