Direct observation of a Γ - X energy spectrum transition in narrow AlAs quantum wells

被引：13

作者：

Khisameeva, A. R. ^{[1
,2
]}

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

Muravev, V. M. ^{[1
]}

Gubarev, S. I. ^{[1
]}

Frolov, D. D. ^{[1
]}

Nefyodov, Yu. A. ^{[1
]}

Kukushkin, I. V. ^{[1
,3
]}

Reichl, C. ^{[4
]}

Tiemann, L. ^{[4
]}

Dietsche, W. ^{[4
]}

Wegscheider, W. ^{[4
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia

[3] Natl Res Univ Higher Sch Econ, Lab Condensed Matter Phys, Moscow 101000, Russia

[4] Swiss Fed Inst Technol, Solid State Phys Lab, Otto Stern Weg 1, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 11期

基金：

俄罗斯科学基金会;

关键词：

2-DIMENSIONAL ELECTRON-GAS; CYCLOTRON-RESONANCE; OPTICAL-DETECTION; PARAMETERS; VALLEYS; SILICON; SYSTEM; GAAS;

D O I：

10.1103/PhysRevB.97.115308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spectra of magnetoplasma excitations have been investigated in two-dimensional electron systems in AlAs quantum wells (QWs) of different widths. The magnetoplasma spectrum has been found to change profoundly when the quantum well width becomes thinner than 5.5 nm, indicating a drastic change in the conduction electron energy spectrum. The transformation can be interpreted in terms of transition from the in-plane strongly anisotropic X-x - X-y valley occupation to the out-of-plane isotropic X-z valley in the QW plane. Strong enhancement of the cyclotron effective mass over the band value in narrow AlAs QWs is reported.

引用

页数：4

共 29 条

[1] GAAS, ALAS, AND ALXGA1-XAS - MATERIAL PARAMETERS FOR USE IN RESEARCH AND DEVICE APPLICATIONS
ADACHI, S
[J]. JOURNAL OF APPLIED PHYSICS, 1985, 58 (03) : R1 - R29
[2] OBSERVATION OF 2-DIMENSIONAL PLASMON IN SILICON INVERSION LAYERS
ALLEN, SJ
TSUI, DC
LOGAN, RA
[J]. PHYSICAL REVIEW LETTERS, 1977, 38 (17) : 980 - 983
[3] DIMENSIONAL RESONANCE OF THE TWO-DIMENSIONAL ELECTRON-GAS IN SELECTIVELY DOPED GAAS/ALGAAS HETEROSTRUCTURES
ALLEN, SJ
STORMER, HL
HWANG, JCM
[J]. PHYSICAL REVIEW B, 1983, 28 (08) : 4875 - 4877
[4] Chaplik A. V., 1972, Soviet Physics - JETP, V35, P395
[5] Design rules for modulation-doped AlAs quantum wells
Chung, Yoon Jang
Baldwin, K. W.
West, K. W.
Kamburov, D.
Shayegan, M.
Pfeiffer, L. N.
[J]. PHYSICAL REVIEW MATERIALS, 2017, 1 (02):
[6] Interface contributions to the spin-orbit interaction parameters of electrons at the (001) GaAs/AlGaAs interface
Devizorova, Zh. A.
Shchepetilnikov, A. V.
Nefyodov, Yu. A.
Volkov, V. A.
Kukushkin, I. V.
[J]. JETP LETTERS, 2014, 100 (02) : 102 - 109
[7] CYCLOTRON RESONANCE OF ELECTRONS AND HOLES IN SILICON AND GERMANIUM CRYSTALS
DRESSELHAUS, G
KIP, AF
KITTEL, C
[J]. PHYSICAL REVIEW, 1955, 98 (02): : 368 - 384
[8] Effective mass suppression upon complete spin-polarization in an isotropic two-dimensional electron system
Gokmen, T.
Padmanabhan, Medini
Vakili, K.
Tutuc, E.
Shayegan, M.
[J]. PHYSICAL REVIEW B, 2009, 79 (19):
[9] CYCLOTRON-RESONANCE STUDY OF NONPARABOLICITY AND SCREENING IN GAAS-GA1-XALXAS HETEROJUNCTIONS
HOPKINS, MA
NICHOLAS, RJ
BRUMMELL, MA
HARRIS, JJ
FOXON, CT
[J]. PHYSICAL REVIEW B, 1987, 36 (09): : 4789 - 4795
[10] Optical detection of magnetoplasma resonances in indirect-gap AlAs/AlGaAs quantum wells
Khisameeva, A. R.
Gubarev, S. I.
Murav'ev, V. M.
Kukushkin, I. V.
[J]. JETP LETTERS, 2017, 106 (01) : 26 - 29

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