Fast spin relaxation in InGaN/GaN multiple quantum wells

J. Brown; J. P.R. Wells; S. A. Hashemizadeh; P. J. Parbrook; T. Wang; A. M. Fox; D. J. Mowbray; M. S. Skolnick

doi:10.1002/pssb.200565271

Fast spin relaxation in InGaN/GaN multiple quantum wells

J. Brown
, J. P.R. Wells
, S. A. Hashemizadeh
, P. J. Parbrook
, T. Wang
, A. M. Fox
, D. J. Mowbray
, M. S. Skolnick

University of Sheffield

Research output: Contribution to journal › Article › peer-review

Abstract

We report measurements of a fast spin relaxation in InGaN multi-quantum wells (MQW) using femtosecond circularly polarised pump-probe spectroscopy. These reveal quantum beats in the spin polarisation arising from a 1.6 meV fine structure splitting of the excitonic levels. We attribute this splitting to exchange interactions in the narrow quantum wells studied. The 5 K spin coherence time was measured to be 450 fs, a value which decreases by a factor of approximately two by 50 K.

Original language	English
Pages (from-to)	1643-1646
Number of pages	4
Journal	Physica Status Solidi (B): Basic Research
Volume	243
Issue number	7
DOIs	https://doi.org/10.1002/pssb.200565271
Publication status	Published - Jun 2006
Externally published	Yes

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title = "Fast spin relaxation in InGaN/GaN multiple quantum wells",

abstract = "We report measurements of a fast spin relaxation in InGaN multi-quantum wells (MQW) using femtosecond circularly polarised pump-probe spectroscopy. These reveal quantum beats in the spin polarisation arising from a 1.6 meV fine structure splitting of the excitonic levels. We attribute this splitting to exchange interactions in the narrow quantum wells studied. The 5 K spin coherence time was measured to be 450 fs, a value which decreases by a factor of approximately two by 50 K.",

author = "J. Brown and Wells, \{J. P.R.\} and Hashemizadeh, \{S. A.\} and Parbrook, \{P. J.\} and T. Wang and Fox, \{A. M.\} and Mowbray, \{D. J.\} and Skolnick, \{M. S.\}",

year = "2006",

month = jun,

doi = "10.1002/pssb.200565271",

language = "English",

volume = "243",

pages = "1643--1646",

journal = "Physica Status Solidi (B): Basic Research",

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publisher = "John Wiley and Sons Inc",

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T1 - Fast spin relaxation in InGaN/GaN multiple quantum wells

AU - Brown, J.

AU - Wells, J. P.R.

AU - Hashemizadeh, S. A.

AU - Parbrook, P. J.

AU - Wang, T.

AU - Fox, A. M.

AU - Mowbray, D. J.

AU - Skolnick, M. S.

PY - 2006/6

Y1 - 2006/6

N2 - We report measurements of a fast spin relaxation in InGaN multi-quantum wells (MQW) using femtosecond circularly polarised pump-probe spectroscopy. These reveal quantum beats in the spin polarisation arising from a 1.6 meV fine structure splitting of the excitonic levels. We attribute this splitting to exchange interactions in the narrow quantum wells studied. The 5 K spin coherence time was measured to be 450 fs, a value which decreases by a factor of approximately two by 50 K.

AB - We report measurements of a fast spin relaxation in InGaN multi-quantum wells (MQW) using femtosecond circularly polarised pump-probe spectroscopy. These reveal quantum beats in the spin polarisation arising from a 1.6 meV fine structure splitting of the excitonic levels. We attribute this splitting to exchange interactions in the narrow quantum wells studied. The 5 K spin coherence time was measured to be 450 fs, a value which decreases by a factor of approximately two by 50 K.

UR - https://www.scopus.com/pages/publications/33745751953

U2 - 10.1002/pssb.200565271

DO - 10.1002/pssb.200565271

M3 - Article

AN - SCOPUS:33745751953

SN - 0370-1972

VL - 243

SP - 1643

EP - 1646

JO - Physica Status Solidi (B): Basic Research

JF - Physica Status Solidi (B): Basic Research

IS - 7

ER -

Fast spin relaxation in InGaN/GaN multiple quantum wells

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