Evidence for resonant magnetic tunneling of rare-earth ions: from insulating to metallic matrix

被引：16
作者：
Barbara, B
Giraud, R
Wernsdorfer, W
Mailly, D
Lejay, P
Tkachuk, A
Suzuki, H
机构：
[1] CNRS, Lab Louis Neel, F-38042 Grenoble 09, France
[2] CNRS, Lab Photon & Nanostruct, Marcoussis, France
[3] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France
[4] All Russia SI Vavilov State Opt Inst, St Petersburg 199034, Russia
[5] NIMS, Nanomat Lab, Tsukuba, Ibaraki 3050047, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
quantum tunneling; entanglement; rare-earth; impurities;
D O I：
10.1016/j.jmmm.2003.12.654
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tunneling of the total angular momentum of Ho3+ in LiYF4 (insulating matrix) is demonstrated. Due to strong hyperfine interactions, electronic angular momentum and nuclear spin tunnel simultaneously (two-body entanglement) and due to weak dipolar interactions, pairs of Ho3+ ions also tunnel simultaneously (four-body entanglement). Similar results obtained with a metallic matrix (YRu2Si2) prove the persistence of tunneling in the presence of free carriers. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：1024 / 1029
页数：6
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