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Title: Unconventional electronic reconstruction in undoped ( Ba , Sr ) Fe 2 As 2 across the spin density wave transition

Abstract

Through a systematic high-resolution angle-resolved photoemission study of the iron pnictide compounds ( Ba , Sr ) Fe 2 As 2 , we show that the electronic structures of these compounds are significantly reconstructed across the spin density wave transition, which cannot be described by a simple folding scenario of conventional density wave ordering. Furthermore, we find that LDA calculations with an incorporated suppressed magnetic moment of 0.5μ B can match well the details in the reconstructed electronic structure, suggesting that the nature of magnetism in the pnictides is more migratory than local, while the origin of suppressed magnetic moment remains an important issue for future investigations.

Authors:
 [1];  [2];  [1];  [1];  [3];  [1];  [3];  [2];  [4];  [5];  [3];  [1];  [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Naval Research Lab. (NRL), Washington, DC (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1443062
Report Number(s):
SLAC-PUB-14053
Journal ID: ISSN 1098-0121; PRBMDO
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 80; Journal Issue: 17; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yi, M., Lu, D. H., Analytis, J. G., Chu, J. -H., Mo, S. -K., He, R. -H., Hashimoto, M., Moore, R. G., Mazin, I. I., Singh, D. J., Hussain, Z., Fisher, I. R., and Shen, Z. -X. Unconventional electronic reconstruction in undoped (Ba,Sr)Fe2As2 across the spin density wave transition. United States: N. p., 2009. Web. doi:10.1103/PhysRevB.80.174510.
Yi, M., Lu, D. H., Analytis, J. G., Chu, J. -H., Mo, S. -K., He, R. -H., Hashimoto, M., Moore, R. G., Mazin, I. I., Singh, D. J., Hussain, Z., Fisher, I. R., & Shen, Z. -X. Unconventional electronic reconstruction in undoped (Ba,Sr)Fe2As2 across the spin density wave transition. United States. doi:10.1103/PhysRevB.80.174510.
Yi, M., Lu, D. H., Analytis, J. G., Chu, J. -H., Mo, S. -K., He, R. -H., Hashimoto, M., Moore, R. G., Mazin, I. I., Singh, D. J., Hussain, Z., Fisher, I. R., and Shen, Z. -X. Mon . "Unconventional electronic reconstruction in undoped (Ba,Sr)Fe2As2 across the spin density wave transition". United States. doi:10.1103/PhysRevB.80.174510. https://www.osti.gov/servlets/purl/1443062.
@article{osti_1443062,
title = {Unconventional electronic reconstruction in undoped (Ba,Sr)Fe2As2 across the spin density wave transition},
author = {Yi, M. and Lu, D. H. and Analytis, J. G. and Chu, J. -H. and Mo, S. -K. and He, R. -H. and Hashimoto, M. and Moore, R. G. and Mazin, I. I. and Singh, D. J. and Hussain, Z. and Fisher, I. R. and Shen, Z. -X.},
abstractNote = {Through a systematic high-resolution angle-resolved photoemission study of the iron pnictide compounds (Ba,Sr)Fe2As2, we show that the electronic structures of these compounds are significantly reconstructed across the spin density wave transition, which cannot be described by a simple folding scenario of conventional density wave ordering. Furthermore, we find that LDA calculations with an incorporated suppressed magnetic moment of 0.5μB can match well the details in the reconstructed electronic structure, suggesting that the nature of magnetism in the pnictides is more migratory than local, while the origin of suppressed magnetic moment remains an important issue for future investigations.},
doi = {10.1103/PhysRevB.80.174510},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 80,
place = {United States},
year = {2009},
month = {11}
}

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