Engineering Plasmonic Waves

in 2D Electron Systems 

Kitty Yeung

Harvard University

April 27th, 2015

Thesis advisor: Donhee Ham

Plasmonic waves in 2D

• Surface Plasmon Polariton

• 2D Plasmon

AlGaAs/GaAs 2DEG

Graphene

Nano Letters, 14, 2479 (2014)

Donhee Ham

Jingyee Chee

Nano Letters, 15, 5001 (2015)

Acknowledgement

Donhee Ham

Hosang Yoon

Jingyee Chee

William Andress

Ling Qin

Guangyu Xu

Jeffrey Abbott

Evelyn Hu

Marko Loncar

Amir Yacoby

David Clarke

Jing Kong (MIT)

Yi Song (MIT)

Loren Pfeiffer (Princeton)

Ken West (Princeton)

National Science Foundation

Air Force Office of Scientific Research

Office of Naval Research

Guixiong Zhong

Tim McClure

Plasmons in Different Dimensions

• Bulk
• Surface Plasmon Polariton
• 2D Plasmon

Plasmons in Different Dimensions

• Bulk

F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)

E

Plasmons in Different Dimensions

• Surface Plasmon Polariton

F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)

Penetration Depth

TM mode E

Plasmons in Different Dimensions

• 2D Plasmon

F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)

Transmission Line Model 

• Ungated

Staffaroni et al., Phot. Nano. Fund. Appl. 10, 166 (2012) (ArXiv:1006.3126)

Transmission Line Model

• Gated

Staffaroni et al., Phot. Nano. Fund. Appl. 10, 166 (2012); A. Eguiluz et at., Phys. Rev. B, 11, 4989 (1975);

W. F. Andress et al., Nano Letters, 12, 2272 (2012)

2D Plasmonic Interferometer

K. Yeung et al., App. Phy. Lett. 102, 021104 (2013)

2D Plasmonic Interferometer

2D Plasmonic Interferometer

2D Plasmonic Interferometer

2D Plasmonic Interferometer

2D Plasmonic Interferometer

Temperature dependence

2D Plasmonic Interferometer

Temperature dependence

2D Plasmonic Materials

2DEG

Graphene

Das Sarma et al., Rev. Mod. Phys. 83, 407 (2011)

Graphene Plasmonics

Ju et al. Nat. Nanotech. (2011)                            Yan el al. New J. Phys. & Nat. Nanotech. (2012) 

Graphene Plasmonic Crystals

Microscope

SEM

K. Yeung, J. Chee et al. Nano Letters, 14, 2479 (2014)

Graphene Plasmonic Crystals

• Band Structure

Graphene Plasmonic Crystals

Graphene Plasmonic Crystals

C6v  point group symmetry

Graphene Plasmonic Crystals

Graphene Plasmonic Crystals

Graphene Plasmonic Crystals

Graphene Plasmonic Crystals

Band Structure Engineering

• Carrier concentration
• Lattice dimensions
• Aperture shape
• Lattice symmetry

Band Structure Engineering

• Carrier concentration

Band Structure Engineering

• Lattice dimensions

graphene

quartz

Band Structure Engineering

• Lattice dimensions

Submitted (2015) 

Band Structure Engineering

• Lattice dimensions

graphene

quartz

Band Structure Engineering

• Aperture shape

Band Structure Engineering

• Lattice symmetry

circular apertures

elliptical apertures

C6v  

C4v  

C2v  

Band Structure Engineering

• Square lattices symmetry variation

circular apertures

elliptical apertures

Band Structure Engineering

• Hexagonal lattices symmetry variation

circular apertures

elliptical apertures

Band Structure Engineering

• Hexagonal lattices symmetry variation

Band Structure Engineering

• Hexagonal lattices symmetry variation

Research papers

Kitty Y. M. Yeung, Hosang Yoon, William Andress, Ken West, Loren Pfeiffer and Donhee Ham, Two-Path Solid-State Interferometry Using Ultra-Subwavelength 2D Plasmonic Waves,

App. Phys. Lett. 102, 021104 (2013)

William Andress, Hosang Yoon, Kitty Y. M. Yeung, Ling Qin, Ken West, Loren Pfeiffer and Donhee Ham, Ultra-Subwavelength Two-Dimensional Plasmonic Circuits,

Nano Lett. 12, 2272 (2012)

Hosang Yoon, Kitty Y. M. Yeung, V. Umansky and Donhee Ham, A Newtonian Approach to Negative Refraction, Nature, 488, 65 (2012)

Engineering Plasmonic Waves in 2D Electron Systems 

Research papers

Kitty Y. M. Yeung, Jingyee Chee, Hosang Yoon, Yi Song, Jing Kong and Donhee Ham, Far-Infrared Graphene Plasmonic Crystals for Plasmonis Band Engineering,

Nano Letters, 14, 2479 (2014)

Engineering Plasmonic Waves in 2D Electron Systems 

Kitty Y. M. Yeung, Jingyee Chee, Yi Song, Jing Kong and Donhee Ham,

Symmetry Engineering of Graphene Plasmonic Crystals,

Nano Letters, 15, 5001 (2015) 

Acknowledgement

Donhee Ham

Hosang Yoon

Jingyee Chee

William Andress

Ling Qin

Guangyu Xu

Jeffrey Abbott

Evelyn Hu

Marko Loncar

Amir Yacoby

David Clarke

Jing Kong (MIT)

Yi Song (MIT)

Loren Pfeiffer (Princeton)

Ken West (Princeton)

National Science Foundation

Air Force Office of Scientific Research

Office of Naval Research

Guixiong Zhong

Tim McClure

Acknowledgement

Ian Frank

Shota Kita

Hu Group

Kasey Russell

Jonathan Lee

Michael Moebius

Mikhail Kats

Nathalie de Leon

Marsela Jorgolli

Nuno Peres (Minho)

Yuliy Bludov (Minho)

Jiangdong Deng

Jason Tresback

Ling Xie

Mike Donohoe

Acknowledgement

Acknowledgement

My family

Engineering Plasmonic Waves

in 2D Electron Systems 

Kitty Yeung

Harvard University

April 27th, 2015

Thesis advisor: Donhee Ham