Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Probing the magnetic ground state of the DX- center in Cd1-xMnxTe : In using muon spin relaxation

Giblin, Sean, Terry, I., Read, Daniel, Hillier, A. D. and Becla, P. 2006. Probing the magnetic ground state of the DX- center in Cd1-xMnxTe : In using muon spin relaxation. Physical Review B: Condensed Matter and Materials Physics 73 (5) , 054421. 10.1103/PhysRevB.73.054421

[img]
Preview
PDF
Download (405kB) | Preview

Abstract

Muon spin relaxation (μSR) measurements have been made on Cd0.85Mn0.15Te:In and Cd0.86Mn0.14Te:Al. The spin glass transition region has been studied using μSR and low-temperature magnetic susceptibility measurements. Persistent photoconductivity (PPC) has been shown to exist only in the In-doped sample, the effect of PPC on the spin glass transition temperature using bulk magnetic susceptibility has also been studied, indicating the presence of bound magnetic polarons. μSR on the Al-doped sample clearly shows the spin glass transition, however, the presence of the DX center, which causes PPC when doping with In donors, perturbs the muon response. Particular attention is paid to the possibility of the DX center trapping muonium, preventing the detection of the spin glass transition. PPC does not induce a change in the muon response, however, we find continuous illumination of the sample allows the observation of the spin glass transition. We suggest that these results can be explained by assuming the presence of multiple DX centers. The muon acting as a local magnetic probe of the DX center also suggests the ground state is diamagnetic.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 1098-0121
Last Modified: 02 Jun 2019 22:44
URI: http://orca.cf.ac.uk/id/eprint/7216

Citation Data

Cited 2 times in Scopus. View in Scopus. Powered By Scopus® Data

Cited 2 times in Web of Science. View in Web of Science.

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics