Optical detection of folded mini-zone-edge coherent acoustic modes in a doped GaAs/AlAs superlattice

被引：6

作者：

Beardsley, R. ^{[1
]}

Akimov, A. V. ^{[1
]}

Glavin, B. A. ^{[2
]}

Maryam, W. ^{[1
]}

Henini, M. ^{[1
]}

Kent, A. J. ^{[1
]}

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[2] VE Lashkarev Inst Semicond Phys, UA-03028 Kiev, Ukraine

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

MULTIPLE-QUANTUM-WELLS; PIEZOELECTRIC FIELDS; PHONONS; SPECTROSCOPY; SCATTERING;

D O I：

10.1103/PhysRevB.82.041302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A coherent phonon mode with frequency corresponding to the first mini Brillouin-zone edge stop gap is observed in ultrafast pump-probe measurements on a doped semiconductor superlattice structure. It is proposed that the optical detection of the mode is facilitated by interactions with the free carriers present in the superlattice.

引用

页数：4

共 19 条

[1] Coherent zone-folded longitudinal acoustic phonons in semiconductor superlattices:: Excitation and detection [J].

Bartels, A ;

Dekorsy, T ;

Kurz, K ;

Köhler, K .

PHYSICAL REVIEW LETTERS, 1999, 82 (05) :1044-1047

[2]

Challis L., 2003, ELECT PHONON INTERAC

[3] PICOSECOND ULTRASONIC STUDY OF LOCALIZED PHONON SURFACE-MODES IN AL/AG SUPERLATTICES [J].

CHEN, W ;

LU, Y ;

MARIS, HJ ;

XIAO, G .

PHYSICAL REVIEW B, 1994, 50 (19) :14506-14515

[4] OBSERVATION OF FOLDED ACOUSTIC PHONONS IN A SEMICONDUCTOR SUPER-LATTICE [J].

COLVARD, C ;

MERLIN, R ;

KLEIN, MV ;

GOSSARD, AC .

PHYSICAL REVIEW LETTERS, 1980, 45 (04) :298-301

[5] OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION [J].

FINKELSTEIN, G ;

SHTRIKMAN, H ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1995, 74 (06) :976-979

[6]

Grahn H.T., 1995, SEMICONDUCTOR SUPERL

[7] Coherent acoustic phonons in phonon cavities investigated by asynchronous optical sampling [J].

Hudert, F. ;

Bartels, A. ;

Janke, C. ;

Dekorsy, T. ;

Koehler, K. .

12TH INTERNATIONAL CONFERENCE ON PHONON SCATTERING IN CONDENSED MATTER (PHONONS 2007), 2007, 92

[8]

JUSSERAND B, 1989, TOP APPL PHYS, V66, P49

[9] Coherent generation of 100 GHz acoustic phonons by dynamic screening of piezoelectric fields in AlGaN/GaN multilayers [J].

Makarona, E ;

Daly, B ;

Im, JS ;

Maris, H ;

Nurmikko, A ;

Han, J .

APPLIED PHYSICS LETTERS, 2002, 81 (15) :2791-2793

[10] Observation of coherent folded acoustic phonons propagating in a GaAs/AlAs superlattice by two-color pump-probe spectroscopy [J].

Mizoguchi, K ;

Hase, M ;

Nakashima, S ;

Nakayama, M .

PHYSICAL REVIEW B, 1999, 60 (11) :8262-8266

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