Optical absorption measurements of electron quantum confinement in Si(111)-2x1 surface chains

被引：3

作者：

Bussetti, G. ^{[1
,2
]}

Violante, A. ^{[1
,2
]}

Bonanni, B. ^{[1
,2
]}

Cirilli, S. ^{[1
,2
]}

Goletti, C. ^{[1
,2
]}

Chiaradia, P. ^{[1
,2
]}

Chiarotti, G. ^{[1
,2
]}

Rohlfing, M. ^{[3
]}

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, NAST, I-00173 Rome, Italy

[2] Univ Roma Tor Vergata, CNISM, I-00173 Rome, Italy

[3] Univ Osnabruck, Fachbereich Phys, D-4500 Osnabruck, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 15期

关键词：

EXCITONS; OXYGEN;

D O I：

10.1103/PhysRevB.82.153304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical experiments on the Si(111)-2x1 surface show that the absorption peak due to dangling-bond transitions exhibits a blueshift upon oxygen exposure. The effect is interpreted as due to quantum confinement of surface electrons in pi-bonded chains of atoms, whose length decreases with oxygen uptake (a particle-in-a-box effect, the box being one dimensional). This conclusion is supported by numerical simulation of the optical spectra.

引用

页数：4

共 50 条

[31] ELECTRONIC STATES AND ELECTRON-PHONON COUPLING AT THE 2X1 RECONSTRUCTED SI(111) SURFACE
SELLONI, A
CASULA, F
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1981, 26 (03): : 351 - 351
[32] ULTRAFAST ELECTRON DYNAMICS AT THE GE(111)2X1 SURFACE
BAEUMLER, M
HAIGHT, R
PHYSICAL REVIEW LETTERS, 1991, 67 (09) : 1153 - 1156
[33] ELECTRONIC STATES AND ELECTRON-PHONON COUPLING AT THE 2X1 RECONSTRUCTED SI(111) SURFACE
CASULA, F
SELLONI, A
SOLID STATE COMMUNICATIONS, 1981, 37 (06) : 495 - 499
[34] ELECTRON-PHONON COUPLING AND SURFACE-STATE POLARONS ON SI(111)2X1
CHEN, CD
SELLONI, A
TOSATTI, E
PHYSICAL REVIEW B, 1984, 30 (12): : 7067 - 7091
[35] Anisotropic optical response of the diamond (111)-2X1 surface
Noguez, C
Ulloa, SE
PHYSICAL REVIEW B, 1996, 53 (19): : 13138 - 13145
[36] Geometric, electronic, and optical properties of the Si(111)2x1 surface: Positive and negative buckling
Violante, C.
Conte, A. Mosca
Bechstedt, F.
Pulci, O.
PHYSICAL REVIEW B, 2012, 86 (24)
[37] SOFT SURFACE PHONONS AND (2X1) SURFACE RECONSTRUCTION ON SI-(111)
TRULLINGER, SE
CUNNINGHAM, SL
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1975, 20 (03): : 406 - 406
[38] Atomic and electronic properties of P/Si(111)-(2x1) surface
Aydugan, Z.
Kaderoglu, C.
Alkan, B.
Cakmak, M.
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, 2011, 56 (03):
[39] ELECTRONIC SURFACE-STATES AT STEPS IN SI(111)2X1
CHIARADIA, P
CHIAROTTI, G
SELCI, S
ZHU, ZJ
SURFACE SCIENCE, 1983, 132 (1-3) : 62 - 67
[40] UNOCCUPIED SURFACE-STATE BAND ON SI(111) 2X1
PERFETTI, P
NICHOLLS, JM
REIHL, B
PHYSICAL REVIEW B, 1987, 36 (11): : 6160 - 6163

← 1 2 3 4 5 →