Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T

S. A. Crooker; N. Samarth

doi:10.1063/1.2711370

Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T

S. A. Crooker, N. Samarth

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

9 Scopus citations

Abstract

Alloy disorder in II-VI diluted magnetic semiconductors (DMS) is typically reduced when the local magnetic spins align in an applied magnetic field. An important and untested expectation of current models of alloy disorder, however, is that alloy fluctuations in many DMS compounds should increase again in very large magnetic fields of the order of 100 T. Here the authors measure the disorder potential in a Zn0.70 Cd0.22 Mn0.08 Se quantum well via the low temperature photoluminescence linewidth using a pulsed magnet system to ∼89 T. Above 70 T, the linewidth is observed to increase again, in accord with a simple model of alloy disorder.

Original language	English (US)
Article number	102109
Journal	Applied Physics Letters
Volume	90
Issue number	10
DOIs	https://doi.org/10.1063/1.2711370
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2711370

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title = "Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T",

abstract = "Alloy disorder in II-VI diluted magnetic semiconductors (DMS) is typically reduced when the local magnetic spins align in an applied magnetic field. An important and untested expectation of current models of alloy disorder, however, is that alloy fluctuations in many DMS compounds should increase again in very large magnetic fields of the order of 100 T. Here the authors measure the disorder potential in a Zn0.70 Cd0.22 Mn0.08 Se quantum well via the low temperature photoluminescence linewidth using a pulsed magnet system to ∼89 T. Above 70 T, the linewidth is observed to increase again, in accord with a simple model of alloy disorder.",

author = "Crooker, {S. A.} and N. Samarth",

note = "Funding Information: The authors gratefully acknowledge J. Sims and the magnet design group, and the 100 T commissioning team: C. Swenson, E. Serna, J. Schillig, P. Ruminer, D. Roybal, D. Rickel, A. Paris, M. Pacheco, J. Michel, J. Martin, M. Gordon, and J. Betts. This work was supported by NSF, DOE, and the State of Florida. ",

year = "2007",

doi = "10.1063/1.2711370",

language = "English (US)",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "10",

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TY - JOUR

T1 - Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T

AU - Crooker, S. A.

AU - Samarth, N.

N1 - Funding Information: The authors gratefully acknowledge J. Sims and the magnet design group, and the 100 T commissioning team: C. Swenson, E. Serna, J. Schillig, P. Ruminer, D. Roybal, D. Rickel, A. Paris, M. Pacheco, J. Michel, J. Martin, M. Gordon, and J. Betts. This work was supported by NSF, DOE, and the State of Florida.

PY - 2007

Y1 - 2007

N2 - Alloy disorder in II-VI diluted magnetic semiconductors (DMS) is typically reduced when the local magnetic spins align in an applied magnetic field. An important and untested expectation of current models of alloy disorder, however, is that alloy fluctuations in many DMS compounds should increase again in very large magnetic fields of the order of 100 T. Here the authors measure the disorder potential in a Zn0.70 Cd0.22 Mn0.08 Se quantum well via the low temperature photoluminescence linewidth using a pulsed magnet system to ∼89 T. Above 70 T, the linewidth is observed to increase again, in accord with a simple model of alloy disorder.

AB - Alloy disorder in II-VI diluted magnetic semiconductors (DMS) is typically reduced when the local magnetic spins align in an applied magnetic field. An important and untested expectation of current models of alloy disorder, however, is that alloy fluctuations in many DMS compounds should increase again in very large magnetic fields of the order of 100 T. Here the authors measure the disorder potential in a Zn0.70 Cd0.22 Mn0.08 Se quantum well via the low temperature photoluminescence linewidth using a pulsed magnet system to ∼89 T. Above 70 T, the linewidth is observed to increase again, in accord with a simple model of alloy disorder.

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VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

M1 - 102109

ER -

Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T

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