Modification of electron density in surface states: Standing wave observation on Pd overlayers by STM

Y. Hasegawa; Takayuki Suzuki; T. Sakurai

doi:10.1016/S0039-6028(02)01611-4

Modification of electron density in surface states: Standing wave observation on Pd overlayers by STM

Y. Hasegawa, Takayuki Suzuki, T. Sakurai

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Our recent attempts for modifying electron density in the surface states of Au(1 1 1) and Cu(1 1 1) surfaces are presented. Using a low-temperature scanning tunneling microscopy electronic standing wave patterns are observed on monolayer-high Pd layer deposited on those surfaces. Longer wave length of the oscillatory structure on the Pd layer than that of the substrates indicates upward shift of an energy level of the surface states and reduced electron density in the states on the overlayer. The observed energy level variation is explained with the phase shift analysis.

Original language	English
Pages (from-to)	84-88
Number of pages	5
Journal	Surface Science
Volume	514
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(02)01611-4
Publication status	Published - 2002 Aug 10
Externally published	Yes

Keywords

Copper
Gold
Metallic films
Palladium
Scanning tunneling microscopy
Surface electronic phenomena (work function, surface potential, surface states, etc.)
Surface waves

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0039-6028(02)01611-4

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title = "Modification of electron density in surface states: Standing wave observation on Pd overlayers by STM",

abstract = "Our recent attempts for modifying electron density in the surface states of Au(1 1 1) and Cu(1 1 1) surfaces are presented. Using a low-temperature scanning tunneling microscopy electronic standing wave patterns are observed on monolayer-high Pd layer deposited on those surfaces. Longer wave length of the oscillatory structure on the Pd layer than that of the substrates indicates upward shift of an energy level of the surface states and reduced electron density in the states on the overlayer. The observed energy level variation is explained with the phase shift analysis.",

keywords = "Copper, Gold, Metallic films, Palladium, Scanning tunneling microscopy, Surface electronic phenomena (work function, surface potential, surface states, etc.), Surface waves",

author = "Y. Hasegawa and Takayuki Suzuki and T. Sakurai",

note = "Funding Information: The authors thank Z.Q. Li, K. Ohno and Y. Kawazoe, IMR, Tohoku University for their theoretical calculation. Y.H. and T. Suzuki acknowledge T. Eguchi and M. Ono for fruitful discussion and image processing. This work was partly supported by a Grant-in-Aid for Scientific Research (No. 12450020) and for Creative Scientific Research (No. 13NP0201); from the Ministry of Education, Science, Sports, and Culture of Japan.",

year = "2002",

month = aug,

day = "10",

doi = "10.1016/S0039-6028(02)01611-4",

language = "English",

volume = "514",

pages = "84--88",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

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TY - JOUR

T1 - Modification of electron density in surface states

T2 - Standing wave observation on Pd overlayers by STM

AU - Hasegawa, Y.

AU - Suzuki, Takayuki

AU - Sakurai, T.

N1 - Funding Information: The authors thank Z.Q. Li, K. Ohno and Y. Kawazoe, IMR, Tohoku University for their theoretical calculation. Y.H. and T. Suzuki acknowledge T. Eguchi and M. Ono for fruitful discussion and image processing. This work was partly supported by a Grant-in-Aid for Scientific Research (No. 12450020) and for Creative Scientific Research (No. 13NP0201); from the Ministry of Education, Science, Sports, and Culture of Japan.

PY - 2002/8/10

Y1 - 2002/8/10

N2 - Our recent attempts for modifying electron density in the surface states of Au(1 1 1) and Cu(1 1 1) surfaces are presented. Using a low-temperature scanning tunneling microscopy electronic standing wave patterns are observed on monolayer-high Pd layer deposited on those surfaces. Longer wave length of the oscillatory structure on the Pd layer than that of the substrates indicates upward shift of an energy level of the surface states and reduced electron density in the states on the overlayer. The observed energy level variation is explained with the phase shift analysis.

AB - Our recent attempts for modifying electron density in the surface states of Au(1 1 1) and Cu(1 1 1) surfaces are presented. Using a low-temperature scanning tunneling microscopy electronic standing wave patterns are observed on monolayer-high Pd layer deposited on those surfaces. Longer wave length of the oscillatory structure on the Pd layer than that of the substrates indicates upward shift of an energy level of the surface states and reduced electron density in the states on the overlayer. The observed energy level variation is explained with the phase shift analysis.

KW - Copper

KW - Gold

KW - Metallic films

KW - Palladium

KW - Scanning tunneling microscopy

KW - Surface electronic phenomena (work function, surface potential, surface states, etc.)

KW - Surface waves

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UR - http://www.scopus.com/inward/citedby.url?scp=0037055543&partnerID=8YFLogxK

U2 - 10.1016/S0039-6028(02)01611-4

DO - 10.1016/S0039-6028(02)01611-4

M3 - Article

AN - SCOPUS:0037055543

VL - 514

SP - 84

EP - 88

JO - Surface Science

JF - Surface Science

SN - 0039-6028

IS - 1-3

ER -

Modification of electron density in surface states: Standing wave observation on Pd overlayers by STM

Abstract

Keywords

ASJC Scopus subject areas

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