Skip to main content Accessibility help
×
Home
Hostname: page-component-559fc8cf4f-8sgpw Total loading time: 0.241 Render date: 2021-03-05T05:14:27.717Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

A Landau-Ginzburg Description of Sb Overlayers

Published online by Cambridge University Press:  21 March 2011

R. Skomski
Affiliation:
Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68508
T. Komesu
Affiliation:
Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68508
H.-K. Jeong
Affiliation:
Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68508
C. N. Borca
Affiliation:
Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68508
P. A. Dowben
Affiliation:
Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68508
D. Ristoiu
Affiliation:
CNRS, Laboratoire Louis Néel, Avenue des Martyrs BP 166, 38042 Grenoble, CEDEX 09, France
J. P. Nozieres
Affiliation:
CNRS, Laboratoire Louis Néel, Avenue des Martyrs BP 166, 38042 Grenoble, CEDEX 09, France
Get access

Abstract

The spin polarization of Sb overlayers on the semi-Heusler alloy NiMnSb is investigated in terms of the Landau-Ginzburg approach. The half-metallic semi-Heusler alloy NiMnSb acts as a ferromagnetic perturbation and induces a spin polarization in the semimetallic Sb overlayer. Using a Gaussian approximation, the propagation of the spin perturbation in the overlayer is calculated. The results are compared with spin-polarized inverse photoemission spectroscopy (SPIPES) results and with recent spin-dependent envelope-function approximation (SDEFA) predictions. The Landau-Ginzburg parameters are both band-structure and temperature dependent, and it is argued that thermal spin excitations lead to an injection depth decreasing as 1//T law at high temperatures.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below.

References

[1] Groot, R. A. de and Buschow, K. H. J., J. Magn. Magn. Mater. 54–57 (1986) 1377.CrossRefGoogle Scholar
[2] Liu, Y. and Allen, R. E., Phys. Rev. B 52 (1995) 1566.10.1103/PhysRevB.52.1566CrossRefGoogle ScholarPubMed
[3] Borca, C. N., Komesu, T., Jeong, H.-K., Dowben, P. A., Ristoiu, D., Hordequin, Ch., Pierre, J., and Nozières, J. P., Appl. Phys. Lett. 77 (2000) 88.CrossRefGoogle Scholar
[4] Ristoiu, D., Nozières, J. P., Borca, C. N., Borca, B., Dowben, P. A., Appl. Phys. Lett. 76 (2000) 2349.CrossRefGoogle Scholar
[5] Ristoiu, D., Nozieres, J. P., Borca, C. N., Komesu, T., Jeong, H.-K., and Dowben, P. A., Europhys. Lett. 43 (2000) 624.CrossRefGoogle Scholar
[6] Komesu, T., Borca, C. N., Jeong, H.-K., Dowben, P. A., Ristoiu, D., Nozières, J. P., Stadler, Sh., Idzerda, Y. U., Phys. Lett. A 273 (2000) 245.CrossRefGoogle Scholar
[7] Hunziker, M. and Landolt, M., Phys. Rev. Lett. 84 (2000) 4713.CrossRefGoogle Scholar
[8] Skomski, R., Komesu, T., Borca, C. N., Jeong, H.-K., Dowben, P. A., Ristoiu, D., and Nozières, J. P., J. Appl. Phys. (2001) in press.Google Scholar
[9] , García-Moliner and Flores, F., “Introduction to the Theory of Solid Surfaces”, University Press, Cambridge 1979.Google Scholar
[10] Edwards, D. M., Mathon, J., and Wohlfarth, E. P., J. Phys. F 5 (1975) 1619.CrossRefGoogle Scholar
[11] Mathon, J., J. Phys. F 16 (1986) L217.CrossRefGoogle Scholar
[12] Dowben, P. A., Hürsch, W., and Landolt, M., J. Magn. Magn. Mater. 125 (1993) 120124.CrossRefGoogle Scholar
[13] Qi, Q.-N., Skomski, R., and Coey, J. M. D., J. Phys. CM 6 (1994) 3245.Google Scholar
[14] Jones, W. and March, N. H., “Theoretical Solid State Physics I”, Wiley, London 1973.Google Scholar
[15] Skomski, R. and Coey, J. M. D., “Permanent Magnetism”, Institute of Physics, Bristol 1999.Google Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 8 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 5th March 2021. This data will be updated every 24 hours.

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

A Landau-Ginzburg Description of Sb Overlayers
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

A Landau-Ginzburg Description of Sb Overlayers
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

A Landau-Ginzburg Description of Sb Overlayers
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *