Anisotropic exchange

R. Skomski; A. Kashyap; J. Zhou; D. J. Sellmyer

doi:10.1063/1.1850401

Anisotropic exchange

R. Skomski, A. Kashyap, J. Zhou, D. J. Sellmyer

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

21 Scopus citations

Abstract

The origin and physical nature anisotropic exchange interactions is investigated. Emphasis is on nonrelativistic exchange anisotropies, as encountered, for example, in intermetallics with layered crystal structures. The summation of site-resolved exchange interactions is analyzed, and it is shown that Ruderman-Kittel-type long-range exchange yield converging exchange-stiffness expressions down to atomic length scales. In general, the resulting exchange stiffness is anisotropic, even if the interaction is mediated by an isotropic free electron gas. The determination of the mean-field Curie temperature from pair-exchange interactions requires the diagonalization of an interaction matrix, as opposed to simple site averaging.

Original language	English (US)
Article number	10B302
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1850401
State	Published - May 15 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.1850401

Cite this

@article{cc7584971829421c998f000fda3aae34,

title = "Anisotropic exchange",

abstract = "The origin and physical nature anisotropic exchange interactions is investigated. Emphasis is on nonrelativistic exchange anisotropies, as encountered, for example, in intermetallics with layered crystal structures. The summation of site-resolved exchange interactions is analyzed, and it is shown that Ruderman-Kittel-type long-range exchange yield converging exchange-stiffness expressions down to atomic length scales. In general, the resulting exchange stiffness is anisotropic, even if the interaction is mediated by an isotropic free electron gas. The determination of the mean-field Curie temperature from pair-exchange interactions requires the diagonalization of an interaction matrix, as opposed to simple site averaging.",

author = "R. Skomski and A. Kashyap and J. Zhou and Sellmyer, {D. J.}",

note = "Funding Information: This work is supported by AFOSR, DOE, NSF-MRSEC, the W. M. Keck Foundation, and CMRA.",

year = "2005",

month = may,

day = "15",

doi = "10.1063/1.1850401",

language = "English (US)",

volume = "97",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "10",

}

TY - JOUR

T1 - Anisotropic exchange

AU - Skomski, R.

AU - Kashyap, A.

AU - Zhou, J.

AU - Sellmyer, D. J.

N1 - Funding Information: This work is supported by AFOSR, DOE, NSF-MRSEC, the W. M. Keck Foundation, and CMRA.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - The origin and physical nature anisotropic exchange interactions is investigated. Emphasis is on nonrelativistic exchange anisotropies, as encountered, for example, in intermetallics with layered crystal structures. The summation of site-resolved exchange interactions is analyzed, and it is shown that Ruderman-Kittel-type long-range exchange yield converging exchange-stiffness expressions down to atomic length scales. In general, the resulting exchange stiffness is anisotropic, even if the interaction is mediated by an isotropic free electron gas. The determination of the mean-field Curie temperature from pair-exchange interactions requires the diagonalization of an interaction matrix, as opposed to simple site averaging.

AB - The origin and physical nature anisotropic exchange interactions is investigated. Emphasis is on nonrelativistic exchange anisotropies, as encountered, for example, in intermetallics with layered crystal structures. The summation of site-resolved exchange interactions is analyzed, and it is shown that Ruderman-Kittel-type long-range exchange yield converging exchange-stiffness expressions down to atomic length scales. In general, the resulting exchange stiffness is anisotropic, even if the interaction is mediated by an isotropic free electron gas. The determination of the mean-field Curie temperature from pair-exchange interactions requires the diagonalization of an interaction matrix, as opposed to simple site averaging.

UR - http://www.scopus.com/inward/record.url?scp=21044451171&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21044451171&partnerID=8YFLogxK

U2 - 10.1063/1.1850401

DO - 10.1063/1.1850401

M3 - Article

AN - SCOPUS:21044451171

SN - 0021-8979

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 10

M1 - 10B302

ER -

Anisotropic exchange

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this