Excitations and magnetization density distribution in the dilute ferromagnetic semiconductor Yb14MnSb11

M. B. Stone; V. O. Garlea; B. Gillon; A. Cousson; A. D. Christianson; M. D. Lumsden; S. E. Nagler; D. Mandrus; B. C. Sales

doi:10.1103/PhysRevB.95.020412

Excitations and magnetization density distribution in the dilute ferromagnetic semiconductor Yb14MnSb11

M. B. Stone, V. O. Garlea, B. Gillon, A. Cousson, A. D. Christianson, M. D. Lumsden, S. E. Nagler, D. Mandrus, B. C. Sales

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5 Scopus citations

Abstract

Yb14MnSb11 is a rare example of a Kondo lattice compound with ferromagnetic dominated RKKY interactions. As a ferromagnetic semiconductor with Tc≈53 K, it is also a potential compound for exploration of spintronic devices. Here we describe measurements which answer remaining questions regarding the energy scales of the exchange interactions, the valence, and the magnetization density distribution in this system. We find that the system consists of RKKY exchange coupled Mn2+ sites with nearest and next nearest exchange interactions dominating the magnetic spectrum with no significant magnetization density localized on other atomic sites. The extended spread of a negative magnetization around each of the Mn ions supports a Kondo screening cloud scenario for Yb14MnSb11.

Original language	English
Article number	020412
Journal	Physical Review B
Volume	95
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.95.020412
State	Published - Jan 23 2017

Funding

A portion of this research at ORNL's High Flux Isotope Reactor and Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. B.C.S. and D.M. were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Funders	Funder number
Office of Basic Energy Sciences
Scientific User Facilities Division
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Division of Materials Sciences and Engineering

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10.1103/PhysRevB.95.020412

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title = "Excitations and magnetization density distribution in the dilute ferromagnetic semiconductor Yb14MnSb11",

abstract = "Yb14MnSb11 is a rare example of a Kondo lattice compound with ferromagnetic dominated RKKY interactions. As a ferromagnetic semiconductor with Tc≈53 K, it is also a potential compound for exploration of spintronic devices. Here we describe measurements which answer remaining questions regarding the energy scales of the exchange interactions, the valence, and the magnetization density distribution in this system. We find that the system consists of RKKY exchange coupled Mn2+ sites with nearest and next nearest exchange interactions dominating the magnetic spectrum with no significant magnetization density localized on other atomic sites. The extended spread of a negative magnetization around each of the Mn ions supports a Kondo screening cloud scenario for Yb14MnSb11.",

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AU - Stone, M. B.

AU - Garlea, V. O.

AU - Gillon, B.

AU - Cousson, A.

AU - Christianson, A. D.

AU - Lumsden, M. D.

AU - Nagler, S. E.

AU - Mandrus, D.

AU - Sales, B. C.

PY - 2017/1/23

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AB - Yb14MnSb11 is a rare example of a Kondo lattice compound with ferromagnetic dominated RKKY interactions. As a ferromagnetic semiconductor with Tc≈53 K, it is also a potential compound for exploration of spintronic devices. Here we describe measurements which answer remaining questions regarding the energy scales of the exchange interactions, the valence, and the magnetization density distribution in this system. We find that the system consists of RKKY exchange coupled Mn2+ sites with nearest and next nearest exchange interactions dominating the magnetic spectrum with no significant magnetization density localized on other atomic sites. The extended spread of a negative magnetization around each of the Mn ions supports a Kondo screening cloud scenario for Yb14MnSb11.

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Excitations and magnetization density distribution in the dilute ferromagnetic semiconductor Yb14MnSb11

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