Excitations of Intercalated Metal Monolayers in Transition Metal Dichalcogenides

被引：22

作者：

Fan, Shiyu ^{[1
]}

Neal, Sabine ^{[2
]}

Won, Choongjae ^{[3
,4
]}

Kim, Jaewook ^{[5
,6
,7
]}

Sapkota, Deepak ^{[1
]}

Huang, Feiting ^{[5
,6
]}

Yang, Junjie ^{[8
]}

Mandrus, David G. ^{[9
,10
]}

Cheong, Sang-Wook ^{[3
,4
,5
,6
]}

Haraldsen, Jason T. ^{[11
]}

Musfeldt, Janice L. ^{[1
,2
]}

机构：

[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[2] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[3] Pohang Univ Sci & Technol, Lab Pohang Emergent Mat, Pohang 790784, South Korea

[4] Pohang Univ Sci & Technol, Max Plank POSTECH Ctr Complex Phase Mat, Pohang 790784, South Korea

[5] Rutgers State Univ, Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA

[6] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[7] Korea Atom Energy Res Inst, Daejeon 34057, South Korea

[8] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA

[9] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[10] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[11] Univ North Florida, Dept Phys, Jacksonville, FL 32224 USA

来源：

NANO LETTERS | 2021年 / 21卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

intercalated transition metal dichalcogenides; excitations of intercalated metal monolayers; structure-property relations involving metal monolayer excitations; MAGNETIC-PROPERTIES; SUPERCONDUCTIVITY; 2H-TAS2; MOS2;

D O I：

10.1021/acs.nanolett.0c03292

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We combine Raman scattering spectroscopy and lattice dynamics calculations to reveal the fundamental excitations of the intercalated metal monolayers in the FexTaS2 (x = 1/4, 1/3) family of materials. Both in- and out-of-plane modes are identified, each of which has trends that depend upon the metal-metal distance, the size of the van der Waals gap, and the metal-to-chalcogenide slab mass ratio. We test these trends against the response of similar systems, including Cr-intercalated NbS2 and RbFe(SO4)(2), and demonstrate that the metal monolayer excitations are both coherent and tunable. We discuss the consequences of intercalated metal monolayer excitations for material properties and developing applications.

引用

页码：99 / 106

页数：8

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