Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots

Gen Long; Biplob Barman; Savas Delikanli; Yu Tsung Tsai; Peihong Zhang; Athos Petrou; Hao Zeng

doi:10.1063/1.4743010

Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots

Gen Long
, Biplob Barman
, Savas Delikanli
, Yu Tsung Tsai
, Peihong Zhang
, Athos Petrou
, Hao Zeng

Physics

SUNY Buffalo

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

33 Scopus citations

Abstract

Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots were studied by circularly polarized magneto-photoluminescence. Mn substitutional doping leads to paramagnetic behavior down to 5 K. While undoped quantum dots show negative circular polarization, Mn doping changes its sign to positive. A circular polarization value of 40 was achieved at T 7 K and B 7 tesla. The results are interpreted in terms of Zeeman splitting of the band edge states in the presence of carrier-dopant exchange interactions that are qualitatively different from the s,p-d exchange interactions in II-VI systems.

Original language	English
Article number	062410
Journal	Applied Physics Letters
Volume	101
Issue number	6
DOIs	https://doi.org/10.1063/1.4743010
State	Published - Aug 6 2012

Access to Document

10.1063/1.4743010

Cite this

@article{d57e3504b2b74194a372dcd99c9d52cf,

title = "Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots",

abstract = "Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots were studied by circularly polarized magneto-photoluminescence. Mn substitutional doping leads to paramagnetic behavior down to 5 K. While undoped quantum dots show negative circular polarization, Mn doping changes its sign to positive. A circular polarization value of 40 was achieved at T 7 K and B 7 tesla. The results are interpreted in terms of Zeeman splitting of the band edge states in the presence of carrier-dopant exchange interactions that are qualitatively different from the s,p-d exchange interactions in II-VI systems.",

author = "Gen Long and Biplob Barman and Savas Delikanli and \{Tsung Tsai\}, Yu and Peihong Zhang and Athos Petrou and Hao Zeng",

year = "2012",

month = aug,

day = "6",

doi = "10.1063/1.4743010",

language = "English",

volume = "101",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "6",

}

TY - JOUR

T1 - Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots

AU - Long, Gen

AU - Barman, Biplob

AU - Delikanli, Savas

AU - Tsung Tsai, Yu

AU - Zhang, Peihong

AU - Petrou, Athos

AU - Zeng, Hao

PY - 2012/8/6

Y1 - 2012/8/6

N2 - Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots were studied by circularly polarized magneto-photoluminescence. Mn substitutional doping leads to paramagnetic behavior down to 5 K. While undoped quantum dots show negative circular polarization, Mn doping changes its sign to positive. A circular polarization value of 40 was achieved at T 7 K and B 7 tesla. The results are interpreted in terms of Zeeman splitting of the band edge states in the presence of carrier-dopant exchange interactions that are qualitatively different from the s,p-d exchange interactions in II-VI systems.

AB - Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots were studied by circularly polarized magneto-photoluminescence. Mn substitutional doping leads to paramagnetic behavior down to 5 K. While undoped quantum dots show negative circular polarization, Mn doping changes its sign to positive. A circular polarization value of 40 was achieved at T 7 K and B 7 tesla. The results are interpreted in terms of Zeeman splitting of the band edge states in the presence of carrier-dopant exchange interactions that are qualitatively different from the s,p-d exchange interactions in II-VI systems.

UR - https://www.scopus.com/pages/publications/84865146346

U2 - 10.1063/1.4743010

DO - 10.1063/1.4743010

M3 - Article

AN - SCOPUS:84865146346

SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 062410

ER -

Carrier-dopant exchange interactions in Mn-doped PbS colloidal quantum dots

Abstract

Access to Document

Other files and links

Fingerprint

Cite this