Submitted on: 05 November 2012.
Revised on: 25 January 2013.
Accepted on: 17 February 2013.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
Submitted on: 27 January 2021.
Revised on: 18 May 2021.
Accepted on: 07 June 2021.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
Submitted on: 07 November 2010.
Revised on: 03 January 2011.
Accepted on: 14 January 2011.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
Submitted on: 10 December 2013.
Revised on: 17 January 2014.
Accepted on: 12 March 2014.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
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Submitted on: 03 July 2020.
Revised on: 26 July 2020.
Accepted on: 17 August 2020.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
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Submitted on: 17 May 2007.
Revised on: 07 June 2007.
Accepted on: 01 August 2007.
___________________APPLIED PHYSICS LETTERS---AIP PUBLISHING
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