Observation of coherent acoustic phonons in Fibonacci superlattices

被引：35

作者：

Mizoguchi, K

Matsutani, K

Nakashima, S

Dekorsy, T

Kurz, H

Nakayama, M

机构：

[1] RHEIN WESTFAL TH AACHEN,INST HALBLEITERTECH,D-52056 AACHEN,GERMANY

[2] OSAKA CITY UNIV,DEPT APPL PHYS,SUMIYOSHI KU,OSAKA 558,JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.55.9336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coherent acoustic phonons are observed in the femtosecond time-resolved reflectivity of GaAs/AlAs Fibonacci superlattices. The time-domain data reveal a complicated superposition of many folded acoustic modes induced by the quasiperiodicity of the Fibonacci sequence. We discuss the phonon spectra from the viewpoint of the polarizability modulation due to the acoustic phonons on the basis of a photoelastic model. In addition, we demonstrate that the resonance of the heavy-hole exciton transition remarkably modifies the oscillation amplitude of the coherent phonons.

引用

收藏

页码：9336 / 9339

页数：4

相关论文

共 16 条

[1] RAMAN-SCATTERING BY ACOUSTIC PHONONS IN FIBONACCI GAAS-ALAS SUPERLATTICES [J].

BAJEMA, K ;

MERLIN, R .

PHYSICAL REVIEW B, 1987, 36 (08) :4555-4557

[2] SUBPICOSECOND TIME-RESOLVED COHERENT-PHONON OSCILLATIONS IN GAAS [J].

CHO, GC ;

KUTT, W ;

KURZ, H .

PHYSICAL REVIEW LETTERS, 1990, 65 (06) :764-766

[3] FOLDED ACOUSTIC AND QUANTIZED OPTIC PHONONS IN (GAAL)AS SUPERLATTICES [J].

COLVARD, C ;

GANT, TA ;

KLEIN, MV ;

MERLIN, R ;

FISCHER, R ;

MORKOC, H ;

GOSSARD, AC .

PHYSICAL REVIEW B, 1985, 31 (04) :2080-2091

[4] Subpicosecond coherent carrier-phonon dynamics in semiconductor heterostructures [J].

Dekorsy, T ;

Kim, AMT ;

Cho, GC ;

Kurz, H ;

Kuznetsov, AV ;

Forster, A .

PHYSICAL REVIEW B, 1996, 53 (03) :1531-1538

[5] RAMAN-SCATTERING IN FIBONACCI SUPERLATTICES [J].

DHARMAWARDANA, MWC ;

MACDONALD, AH ;

LOCKWOOD, DJ ;

BARIBEAU, JM ;

HOUGHTON, DC .

PHYSICAL REVIEW LETTERS, 1987, 58 (17) :1761-1764

[6] RAMAN-SCATTERING ON PERIODIC FIBONACCI SUPERLATTICES - THE BUILDING UP OF A QUASIPERIODIC ORDER [J].

JUSSERAND, B ;

PAQUET, D ;

MOLLOT, F ;

JONCOUR, MC ;

ETIENNE, B .

PHYSICAL REVIEW B, 1989, 39 (06) :3683-3687

[7] GENERATION OF COHERENT PHONONS IN CONDENSED MEDIA [J].

KUTT, WA ;

ALBRECHT, W ;

KURZ, H .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (10) :2434-2444

[8] FIBONACCI INVARIANT AND ELECTRONIC-PROPERTIES OF GAAS/GA1-XALXAS QUASIPERIODIC SUPERLATTICES [J].

LARUELLE, F ;

ETIENNE, B .

PHYSICAL REVIEW B, 1988, 37 (09) :4816-4819

[9] IMPULSIVE LIGHT-SCATTERING BY COHERENT PHONONS IN LAALO3 - DISORDER AND BOUNDARY EFFECTS [J].

LIU, Y ;

FRENKEL, A ;

GARRETT, GA ;

WHITAKER, JF ;

FAHY, S ;

UHER, C ;

MERLIN, R .

PHYSICAL REVIEW LETTERS, 1995, 75 (02) :334-337

[10] QUASIPERIODIC GAAS-ALAS HETEROSTRUCTURES [J].

MERLIN, R ;

BAJEMA, K ;

CLARKE, R ;

JUANG, FY ;

BHATTACHARYA, PK .

PHYSICAL REVIEW LETTERS, 1985, 55 (17) :1768-1770