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Title: Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn 2 As 2 and BaMn 2 Sb 2

Journal Article · · Physical Review B
 [1];  [2];  [3];  [1];  [4];  [5];  [6];  [1];  [1];  [1];  [1];  [7];  [8];  [7];  [9];  [10];  [2]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China); Univ. Paris-Saclay, Palaiseau (France); CEA, LITEN, Grenoble (France)
  4. Chinese Academy of Sciences (CAS), Beijing (China); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  5. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Tokyo, Chiba (Japan)
  6. Chinese Academy of Sciences (CAS), Beijing (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  7. Chinese Academy of Sciences (CAS), Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  8. Chinese Academy of Sciences (CAS), Beijing (China); Princeton Univ., Princeton, NJ (United States)
  9. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  10. Univ. Paris-Saclay, Palaiseau (France); College de France, Paris (France); European Theoretical Synchrotron Facility (France)

Here, we performed an angle-resolved photoemission spectroscopy study of BaMn2As2 and BaMn 2 Sb 2 , which are isostructural to the parent compound BaFe2As2 of the 122 family of ferropnictide superconductors. We also show the existence of a strongly kz -dependent band gap with a minimum at the Brillouin zone center, in agreement with their semiconducting properties. Despite the half filling of the electronic 3d shell, we show that the band structure in these materials is almost not renormalized from the Kohn-Sham bands of density functional theory. Finally, our photon-energy-dependent study provides evidence for Mn-pnictide hybridization, which may play a role in tuning the electronic correlations in these compounds.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC00112704
OSTI ID:
1339406
Alternate ID(s):
OSTI ID: 1330481; OSTI ID: 1345749
Report Number(s):
BNL-113593-2017-JA; PRBMDO
Journal Information:
Physical Review B, Vol. 94, Issue 15; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (1)

Magnetic hexadecapole order and magnetopiezoelectric metal state in Ba 1 x K x Mn 2 As 2 journal August 2017