http://reply.papertrans.cn/3/234/23333/23333-21.png
Submitted on: 29 July 2002.
Revised on: 04 September 2002.
Accepted on: 19 September 2002.
npj Quantum Materials---NATURE PORTFOLIO
http://reply.papertrans.cn/3/234/23333/23333-23.png
http://reply.papertrans.cn/3/234/23333/23333-24.png
http://reply.papertrans.cn/3/234/23333/23333-25.png
Submitted on: 07 October 2007.
Revised on: 04 November 2007.
Accepted on: 18 November 2007.
npj Quantum Materials
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http://reply.papertrans.cn/3/234/23333/23333-28.png
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Submitted on: 17 February 2008.
Revised on: 05 March 2008.
Accepted on: 19 March 2008.
npj Quantum Materials---NATURE PORTFOLIO