Document Detail

Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor.
MedLine Citation:
PMID:  20366619     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at approximately 85 K, followed by superconductivity at approximately 28 K. We find the emergence of a normal-state order that suppresses SDW at a temperature T{*} approximately 60 K and argue that this normal-state order is a precursor to superconductivity.
Elbert E M Chia; D Talbayev; Jian-Xin Zhu; H Q Yuan; T Park; J D Thompson; C Panagopoulos; G F Chen; J L Luo; N L Wang; A J Taylor
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Publication Detail:
Type:  Journal Article     Date:  2010-01-13
Journal Detail:
Title:  Physical review letters     Volume:  104     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-04-06     Completed Date:  2010-06-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  027003     Citation Subset:  -    
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
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