Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals

I. Sarkar; M. K. Sanyal; S. Takeyama; S. Kar; H. Hirayama; H. Mino; F. Komori; S. Biswas

doi:10.1103/PhysRevB.79.054410

Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals

I. Sarkar
, M. K. Sanyal
, S. Takeyama
, S. Kar
, H. Hirayama
, H. Mino
, F. Komori
, S. Biswas

Saha Institute of Nuclear Physics
The University of Tokyo
Indian Association for the Cultivation of Science
Chiba University

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

Abstract

Magnetic ordering can tune optical properties of photoluminescent dilute magnetic semiconductors. The results of a magnetic field dependent photoluminescence (PL) up to 50 T above and below ferromagnetic transition temperature TC in Mn-doped ZnS nanocrystals have been reported here. The PL intensity corresponding to internal transition between states of Mn significantly decreases with application of magnetic field below TC but no such suppression was observed above TC even at 50 T. The zero-field PL intensity also exhibits continuous suppression with decreasing temperature in the ferromagnetic state. The PL intensity profiles could be fitted consistently using a model of magnetic-ordering-induced spin-sensitive energy transfer to Mn states below TC.

Original language	English
Article number	054410
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.79.054410
Publication status	Published - 11 Feb 2009
Externally published	Yes

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10.1103/PhysRevB.79.054410

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title = "Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals",

abstract = "Magnetic ordering can tune optical properties of photoluminescent dilute magnetic semiconductors. The results of a magnetic field dependent photoluminescence (PL) up to 50 T above and below ferromagnetic transition temperature TC in Mn-doped ZnS nanocrystals have been reported here. The PL intensity corresponding to internal transition between states of Mn significantly decreases with application of magnetic field below TC but no such suppression was observed above TC even at 50 T. The zero-field PL intensity also exhibits continuous suppression with decreasing temperature in the ferromagnetic state. The PL intensity profiles could be fitted consistently using a model of magnetic-ordering-induced spin-sensitive energy transfer to Mn states below TC.",

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doi = "10.1103/PhysRevB.79.054410",

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T1 - Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals

AU - Sarkar, I.

AU - Sanyal, M. K.

AU - Takeyama, S.

AU - Kar, S.

AU - Hirayama, H.

AU - Mino, H.

AU - Komori, F.

AU - Biswas, S.

PY - 2009/2/11

Y1 - 2009/2/11

N2 - Magnetic ordering can tune optical properties of photoluminescent dilute magnetic semiconductors. The results of a magnetic field dependent photoluminescence (PL) up to 50 T above and below ferromagnetic transition temperature TC in Mn-doped ZnS nanocrystals have been reported here. The PL intensity corresponding to internal transition between states of Mn significantly decreases with application of magnetic field below TC but no such suppression was observed above TC even at 50 T. The zero-field PL intensity also exhibits continuous suppression with decreasing temperature in the ferromagnetic state. The PL intensity profiles could be fitted consistently using a model of magnetic-ordering-induced spin-sensitive energy transfer to Mn states below TC.

AB - Magnetic ordering can tune optical properties of photoluminescent dilute magnetic semiconductors. The results of a magnetic field dependent photoluminescence (PL) up to 50 T above and below ferromagnetic transition temperature TC in Mn-doped ZnS nanocrystals have been reported here. The PL intensity corresponding to internal transition between states of Mn significantly decreases with application of magnetic field below TC but no such suppression was observed above TC even at 50 T. The zero-field PL intensity also exhibits continuous suppression with decreasing temperature in the ferromagnetic state. The PL intensity profiles could be fitted consistently using a model of magnetic-ordering-induced spin-sensitive energy transfer to Mn states below TC.

UR - https://www.scopus.com/pages/publications/62549095903

U2 - 10.1103/PhysRevB.79.054410

DO - 10.1103/PhysRevB.79.054410

M3 - Article

AN - SCOPUS:62549095903

SN - 1098-0121

VL - 79

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 054410

ER -

Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals

Abstract

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