Local Electronic Structure and Dynamics of Muon-Polaron Complexes in Fe2O3

被引：10

作者：

Dehn, M. H. ^{[1
,2
,3
]}

Shenton, J. K. ^{[4
]}

Arseneau, D. J. ^{[3
]}

MacFarlane, W. A. ^{[2
,3
,5
]}

Morris, G. D. ^{[3
]}

Maigne, A. ^{[2
]}

Spaldin, N. A. ^{[4
]}

Kiefl, R. F. ^{[1
,2
,3
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[2] Univ British Columbia, Stewart Blusson Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

[3] TRIUMF, Vancouver, BC V6T 2A3, Canada

[4] Swiss Fed Inst Technol, Dept Mat, CH-8093 Zurich, Switzerland

[5] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 03期

基金：

欧洲研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

INITIO MOLECULAR-DYNAMICS; ELECTRICAL-ACTIVITY; SPIN ROTATION; OXIDE MUONICS; ALPHA-FE2O3; HYDROGEN; TRANSPORT; SR; SEMICONDUCTORS; DEFECTS;

D O I：

10.1103/PhysRevLett.126.037202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform detailed muon spin rotation (mu SR) measurements in the classic antiferromagnet Fe2O3 and explain the spectra by considering dynamic population and dissociation of charge-neutral muon-polaron complexes. We show that charge-neutral muon states in Fe2O3, despite lacking the signatures typical of charge-neutral muonium centers in nonmagnetic materials, have a significant impact on the measured mu SR frequencies and relaxation rates. Our identification of such polaronic muon centers in Fe2O3 suggests that isolated hydrogen (H) impurities form analogous complexes, and that H interstitials may be a source of charge carrier density in Fe2O3

引用

页数：6

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