Plasmonic evolution of atomically size-selected Au clusters by electron energy loss spectrum

被引：5

作者：

Lu, Siqi ^{[1
,2
]}

Xie, Lin ^{[3
]}

Lai, Kang ^{[4
]}

Chen, Runkun ^{[5
,6
,7
]}

Cao, Lu ^{[1
,2
]}

Hu, Kuojuei ^{[1
,2
]}

Wang, Xuefeng ^{[8
,9
]}

Han, Jinsen ^{[4
]}

Wan, Xiangang ^{[1
,2
]}

Wan, Jianguo ^{[1
,2
]}

Dai, Qing ^{[11
]}

Song, Fengqi ^{[1
,2
]}

He, Jiaqing ^{[3
]}

Dai, Jiayu ^{[4
]}

Chen, Jianing ^{[5
,6
,7
,10
]}

Wang, Zhenlin ^{[1
,2
]}

Wang, Guanghou ^{[1
,2
]}

机构：

[1] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China

[3] Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

[4] Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China

[5] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[6] Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[7] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[8] Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China

[9] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

[10] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China

[11] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, Div Nanophoton, Beijing 100190, Peoples R China

来源：

NATIONAL SCIENCE REVIEW | 2021年 / 8卷 / 12期

基金：

中国国家自然科学基金;

关键词：

atomically precise; gold cluster; plasmonic response; electron energy loss spectroscopy; full-scale evolution; OPTICAL-ABSORPTION; SURFACE-PLASMONS; METAL-CLUSTERS; GOLD; RESONANCE; TRANSITIONS; RANGE;

D O I：

10.1093/nsr/nwaa282

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The plasmonic response of gold clusters with atom number (N) = 100-70 000 was investigated using scanning transmission electron microscopy-electron energy loss spectroscopy. For decreasing N, the bulk plasmon remains unchanged above N = 887 but then disappears, while the surface plasmon firstly redshifts from 2.4 to 2.3 eV above N = 887 before blueshifting towards 2.6 eV down to N = 300, and finally splitting into three fine features. The surface plasmon's excitation ratio is found to follow N-0.669, which is essentially R-2. An atomically precise evolution picture of plasmon physics is thus demonstrated according to three regimes: classical plasmon (N = 887-70 000), quantum confinement corrected plasmon (N = 300-887) and molecule related plasmon (N < 300).

引用

页数：9

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