Ultrafast spin relaxation of excitons in a self-organized quantum-well material

Junko Hayase, Y. Kato, K. Ohashi, H. Kunugita, K. Ema, T. Ban, T. Kondo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. Time-resolved photoluminescence and pump-probe spectroscopies have been employed to study the spin relaxation processes of excitons in bulk semiconductors and semiconductor quantum wells (QWs). Extensive studies have shown that the spin dynamics in QWs differs from that in the bulk. In spite of many studies on excitons with large Bohr-radius such as in GaAs-based QWs, studies on excitons with small Bohr-radius are lacking. Since spin relaxation greatly depends on the exchange interaction between electron and hole in the exciton, the spin dynamics is expected to change with the coupling strength between the electron and hole. Therefore, experiments for excitons with small Bohr-radius are desired for full understanding of spin phenomena in QWs.

Original languageEnglish
Title of host publicationTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages209-210
Number of pages2
ISBN (Print)155752663X, 9781557526632
DOIs
Publication statusPublished - 2001
Externally publishedYes
EventQuantum Electronics and Laser Science Conference, QELS 2001 - Baltimore, United States
Duration: 2001 May 62001 May 11

Other

OtherQuantum Electronics and Laser Science Conference, QELS 2001
CountryUnited States
CityBaltimore
Period01/5/601/5/11

Fingerprint

Excitons
Semiconductor quantum wells
excitons
quantum wells
Spin dynamics
spin dynamics
radii
Electrons
Exchange interactions
Relaxation processes
Photoluminescence
electrons
Pumps
Spectroscopy
pumps
Semiconductor materials
photoluminescence
probes
spectroscopy
Experiments

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation

Cite this

Hayase, J., Kato, Y., Ohashi, K., Kunugita, H., Ema, K., Ban, T., & Kondo, T. (2001). Ultrafast spin relaxation of excitons in a self-organized quantum-well material. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001 (pp. 209-210). [962078] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/QELS.2001.962078

Ultrafast spin relaxation of excitons in a self-organized quantum-well material. / Hayase, Junko; Kato, Y.; Ohashi, K.; Kunugita, H.; Ema, K.; Ban, T.; Kondo, T.

Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc., 2001. p. 209-210 962078.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hayase, J, Kato, Y, Ohashi, K, Kunugita, H, Ema, K, Ban, T & Kondo, T 2001, Ultrafast spin relaxation of excitons in a self-organized quantum-well material. in Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001., 962078, Institute of Electrical and Electronics Engineers Inc., pp. 209-210, Quantum Electronics and Laser Science Conference, QELS 2001, Baltimore, United States, 01/5/6. https://doi.org/10.1109/QELS.2001.962078
Hayase J, Kato Y, Ohashi K, Kunugita H, Ema K, Ban T et al. Ultrafast spin relaxation of excitons in a self-organized quantum-well material. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc. 2001. p. 209-210. 962078 https://doi.org/10.1109/QELS.2001.962078
Hayase, Junko ; Kato, Y. ; Ohashi, K. ; Kunugita, H. ; Ema, K. ; Ban, T. ; Kondo, T. / Ultrafast spin relaxation of excitons in a self-organized quantum-well material. Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc., 2001. pp. 209-210
@inproceedings{91f203b3998d4ac69141493c87d61a0e,
title = "Ultrafast spin relaxation of excitons in a self-organized quantum-well material",
abstract = "Summary form only given. Time-resolved photoluminescence and pump-probe spectroscopies have been employed to study the spin relaxation processes of excitons in bulk semiconductors and semiconductor quantum wells (QWs). Extensive studies have shown that the spin dynamics in QWs differs from that in the bulk. In spite of many studies on excitons with large Bohr-radius such as in GaAs-based QWs, studies on excitons with small Bohr-radius are lacking. Since spin relaxation greatly depends on the exchange interaction between electron and hole in the exciton, the spin dynamics is expected to change with the coupling strength between the electron and hole. Therefore, experiments for excitons with small Bohr-radius are desired for full understanding of spin phenomena in QWs.",
author = "Junko Hayase and Y. Kato and K. Ohashi and H. Kunugita and K. Ema and T. Ban and T. Kondo",
year = "2001",
doi = "10.1109/QELS.2001.962078",
language = "English",
isbn = "155752663X",
pages = "209--210",
booktitle = "Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - GEN

T1 - Ultrafast spin relaxation of excitons in a self-organized quantum-well material

AU - Hayase, Junko

AU - Kato, Y.

AU - Ohashi, K.

AU - Kunugita, H.

AU - Ema, K.

AU - Ban, T.

AU - Kondo, T.

PY - 2001

Y1 - 2001

N2 - Summary form only given. Time-resolved photoluminescence and pump-probe spectroscopies have been employed to study the spin relaxation processes of excitons in bulk semiconductors and semiconductor quantum wells (QWs). Extensive studies have shown that the spin dynamics in QWs differs from that in the bulk. In spite of many studies on excitons with large Bohr-radius such as in GaAs-based QWs, studies on excitons with small Bohr-radius are lacking. Since spin relaxation greatly depends on the exchange interaction between electron and hole in the exciton, the spin dynamics is expected to change with the coupling strength between the electron and hole. Therefore, experiments for excitons with small Bohr-radius are desired for full understanding of spin phenomena in QWs.

AB - Summary form only given. Time-resolved photoluminescence and pump-probe spectroscopies have been employed to study the spin relaxation processes of excitons in bulk semiconductors and semiconductor quantum wells (QWs). Extensive studies have shown that the spin dynamics in QWs differs from that in the bulk. In spite of many studies on excitons with large Bohr-radius such as in GaAs-based QWs, studies on excitons with small Bohr-radius are lacking. Since spin relaxation greatly depends on the exchange interaction between electron and hole in the exciton, the spin dynamics is expected to change with the coupling strength between the electron and hole. Therefore, experiments for excitons with small Bohr-radius are desired for full understanding of spin phenomena in QWs.

UR - http://www.scopus.com/inward/record.url?scp=84958256611&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958256611&partnerID=8YFLogxK

U2 - 10.1109/QELS.2001.962078

DO - 10.1109/QELS.2001.962078

M3 - Conference contribution

SN - 155752663X

SN - 9781557526632

SP - 209

EP - 210

BT - Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001

PB - Institute of Electrical and Electronics Engineers Inc.

ER -