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Title: Detailed band structure of twinned and detwinned BaFe 2 As 2 studied with angle-resolved photoemission spectroscopy

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [5];  [5];  [6];  [3];  [7]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Physics
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics
  4. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  6. North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Physics; Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics
+ Show Author Affiliations

We study the band structure of twinned and detwinned BaFe2As2 using angle-resolved photoemission spectroscopy. The combination of measurements in the ordered and normal states along four high-symmetry momentum directions Γ/Z-X/Y enables us to identify the complex reconstructed band structure in the ordered state in great detail. We clearly observe the nematic splitting of the dxz and dyz orbitals as well as folding due to magnetic order with a wave vector of (π,π,π) . We are able to assign all observed bands. In particular we suggest an assignment of the electron bands different from previous reports. The high-quality spectra allow us to achieve a comprehensive understanding of the band structure of BaFe2As2.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1493333
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 3 Vol. 99; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Effect of nematic ordering on electronic structure of FeSe text January 2016

Cited By (6)

Probing the reconstructed Fermi surface of antiferromagnetic BaFe2As2 in one domain journal July 2019
Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4 journal August 2019
Energy scale of nematic ordering in the parent iron-based superconductor BaFe 2 As 2 journal July 2019
Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba ( Fe 1 − x Co x ) 2 As 2 journal October 2019
Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors journal August 2019
Probing the reconstructed Fermi surface of antiferromagnetic $BaFe_{2}As_{2}$ in one domain text January 2019

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