Unusual nodal behaviors of the superconducting gap in the iron-based superconductor Ba(Fe0.65Ru0.35)2As2 : Effects of spin-orbit coupling

Liu, L.; Okazaki, K.; Yoshida, T.; Suzuki, H.; Horio, M.; Ambolode, L. C.  C.; Xu, J.; Ideta, S.; Hashimoto, M.; Lu, D. H.; Shen, Z. -X.; Ota, Y.; Shin, S.; Nakajima, M.; Ishida, S.; Kihou, K.; Lee, C. H.; Iyo, A.; Eisaki, H.; Mikami, T.; Kakeshita, T.; Yamakawa, Y.; Kontani, H.; Uchida, S.; Fujimori, A.

doi:10.1103/PhysRevB.95.104504

Title: Unusual nodal behaviors of the superconducting gap in the iron-based superconductor $Ba (F e_{0.65} R u_{0.35})_{2} A s_{2}$ : Effects of spin-orbit coupling

Journal Article · Mon Mar 06 00:00:00 EST 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.95.104504· OSTI ID:1353209

Liu, L. ^[1]; Okazaki, K. ^[2]; Yoshida, T. ^[3]; Suzuki, H. ^[1]; Horio, M. ^[1]; Ambolode, L. C. C. ^[1]; Xu, J. ^[1]; Ideta, S. ^[1]; Hashimoto, M. ^[4]; Lu, D. H. ^[4]; Shen, Z. -X. ^[4]; Ota, Y. ^[5]; Shin, S. ^[5]; Nakajima, M. ^[6]; Ishida, S. ^[6]; Kihou, K. ^[7]; Lee, C. H. ^[7]; Iyo, A. ^[6]; Eisaki, H. ^[6]; Mikami, T. ^[1] more »

Univ. of Tokyo (Japan). Dept. of Physics
Univ. of Tokyo (Japan). Dept. of Physics; Univ. of Tokyo, Kashiwa (Japan). Inst. for Solid State Physics (ISSP)
Kyoto Univ. (Japan). Graduate School of Human and Environmental Studies
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Univ. of Tokyo, Kashiwa (Japan). Inst. for Solid State Physics (ISSP)
National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan). Electronics and Photonics Research Inst.
National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan). Research Inst. for Energy Conservation
Nagoya Univ. (Japan). Dept. of Physics

Here we have investigated the superconducting (SC) gap on hole Fermi surfaces (FSs) of optimally substituted Ba (Fe_0.65 Ru_0.35)₂ As₂ by angle-resolved photoemission spectroscopy (APRES) using bulk-sensitive 7 eV laser and synchrotron radiation. It was found that, whereas the gap is isotropic in the k_x - k_y plane, the gap magnitudes of two resolved hole FSs show similar k_z dependences and decrease as k_z approaches ~ 2 π/c (i.e., around the Z point), unlike the other Fe-based superconductors reported so far, where the SC gap of only one hole FS shows a strong k z dependence. This unique gap structure can be understood in the scenario that the d_z₂ orbital character is mixed into both hole FSs due to finite spin-orbit coupling (SOC) and is reproduced by calculation within the random phase approximation including the SOC.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology (MEXT)

Grant/Contract Number:: JP15H02109; JP25220707; JP26610095; AC02-76SF00515

OSTI ID:: 1353209

Journal Information:: Physical Review B, Vol. 95, Issue 10; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

References (22)

Significant Reduction of Electronic Correlations upon Isovalent Ru Substitution of ${BaFe}_{2} {As}_{2}$ Brouet, V.; Rullier-Albenque, F.; Marsi, M. Physical Review Letters, Vol. 105, Issue 8 https://doi.org/10.1103/PhysRevLett.105.087001	journal	August 2010
Evidence for excluding the possibility of $d$ -wave superconducting-gap symmetry in Ba-doped KFe $_{2}$ As $_{2}$ Ota, Y.; Okazaki, K.; Kotani, Y. Physical Review B, Vol. 89, Issue 8 https://doi.org/10.1103/PhysRevB.89.081103	journal	February 2014
Two-Dimensional and Three-Dimensional Fermi Surfaces of Superconducting ${BaFe}_{2} ({As}_{1 - x} P_{x})_{2}$ and Their Nesting Properties Revealed by Angle-Resolved Photoemission Spectroscopy Yoshida, T.; Nishi, I.; Ideta, S. Physical Review Letters, Vol. 106, Issue 11 https://doi.org/10.1103/PhysRevLett.106.117001	journal	March 2011
Effects of Ru substitution on electron correlations and Fermi-surface dimensionality in Ba(Fe $_{1 - x}$ Ru $_{x}$ ) $_{2}$ As $_{2}$ Xu, N.; Qian, T.; Richard, P. Physical Review B, Vol. 86, Issue 6 https://doi.org/10.1103/PhysRevB.86.064505	journal	August 2012
Low-Temperature and High-Energy-Resolution Laser Photoemission Spectroscopy Shimojima, Takahiro; Okazaki, Kozo; Shin, Shik Journal of the Physical Society of Japan, Vol. 84, Issue 7 https://doi.org/10.7566/JPSJ.84.072001	journal	July 2015
Manifestations of multiple-carrier charge transport in the magnetostructurally ordered phase of BaFe $_{2}$ As $_{2}$ Ishida, S.; Liang, T.; Nakajima, M. Physical Review B, Vol. 84, Issue 18 https://doi.org/10.1103/PhysRevB.84.184514	journal	November 2011
Effects of Disordered Ru Substitution in ${BaFe}_{2} {As}_{2}$ : Possible Realization of Superdiffusion in Real Materials Wang, Limin; Berlijn, Tom; Wang, Yan Physical Review Letters, Vol. 110, Issue 3 https://doi.org/10.1103/PhysRevLett.110.037001	journal	January 2013
Possible Three-Dimensional Nodes in the s ± Superconducting Gap of BaFe ₂ (As _{1- x} P _x ) ₂ Suzuki, Katsuhiro; Usui, Hidetomo; Kuroki, Kazuhiko Journal of the Physical Society of Japan, Vol. 80, Issue 1 https://doi.org/10.1143/JPSJ.80.013710	journal	January 2011
Physical and magnetic properties of $Ba {({Fe}_{1 - x} {Ru}_{x})}_{2} {As}_{2}$ single crystals Thaler, A.; Ni, N.; Kracher, A. Physical Review B, Vol. 82, Issue 1 https://doi.org/10.1103/PhysRevB.82.014534	journal	July 2010
Nodal gap structure in Fe-based superconductors due to the competition between orbital and spin fluctuations Saito, Tetsuro; Onari, Seiichiro; Kontani, Hiroshi Physical Review B, Vol. 88, Issue 4 https://doi.org/10.1103/PhysRevB.88.045115	journal	July 2013
Nodal superconducting-gap structure in ferropnictide superconductor BaFe2(As0.7P0.3)2 Zhang, Y.; Ye, Z. R.; Ge, Q. Q. Nature Physics, Vol. 8, Issue 5 https://doi.org/10.1038/nphys2248	journal	March 2012
What Controls the Phase Diagram and Superconductivity in Ru-Substituted ${BaFe}_{2} {As}_{2}$ ? Dhaka, R. S.; Liu, Chang; Fernandes, R. M. Physical Review Letters, Vol. 107, Issue 26 https://doi.org/10.1103/PhysRevLett.107.267002	journal	December 2011
Anisotropy of the superconducting gap in the iron-based superconductor BaFe2(As1-xPx)2 Yoshida, T.; Ideta, S.; Shimojima, T. Scientific Reports, Vol. 4, Issue 1 https://doi.org/10.1038/srep07292	journal	December 2014
Robust Nodal Superconductivity Induced by Isovalent Doping in $Ba ({Fe}_{1 - x} {Ru}_{x})_{2} {As}_{2}$ and ${BaFe}_{2} ({As}_{1 - x} P_{x})_{2}$ Qiu, X.; Zhou, S. Y.; Zhang, H. Physical Review X, Vol. 2, Issue 1 https://doi.org/10.1103/PhysRevX.2.011010	journal	February 2012
Hole and electron contributions to the transport properties of $Ba {({Fe}_{1 - x} {Ru}_{x})}_{2} {As}_{2}$ single crystals Rullier-Albenque, F.; Colson, D.; Forget, A. Physical Review B, Vol. 81, Issue 22 https://doi.org/10.1103/PhysRevB.81.224503	journal	June 2010
Gap symmetry and structure of Fe-based superconductors Hirschfeld, P. J.; Korshunov, M. M.; Mazin, I. I. Reports on Progress in Physics, Vol. 74, Issue 12 https://doi.org/10.1088/0034-4885/74/12/124508	journal	October 2011
Evolution of transport properties of BaFe $_{2 - x}$ Ru $_{x}$ As $_{2}$ in a wide range of isovalent Ru substitution Eom, M. J.; Na, S. W.; Hoch, C. Physical Review B, Vol. 85, Issue 2 https://doi.org/10.1103/PhysRevB.85.024536	journal	January 2012
Unprecedented anisotropic metallic state in undoped iron arsenide BaFe2As2 revealed by optical spectroscopy Nakajima, M.; Liang, T.; Ishida, S. Proceedings of the National Academy of Sciences, Vol. 108, Issue 30 https://doi.org/10.1073/pnas.1100102108	journal	July 2011
Angle-resolved photoemission observation of isotropic superconducting gaps in isovalent Ru-substituted Ba(Fe $_{0.75}$ Ru $_{0.25}$ ) $_{2}$ As $_{2}$ Xu, N.; Richard, P.; Wang, X. -P. Physical Review B, Vol. 87, Issue 9 https://doi.org/10.1103/PhysRevB.87.094513	journal	March 2013
Line nodes in the energy gap of superconducting ${BaFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ single crystals as seen via penetration depth and thermal conductivity Hashimoto, K.; Yamashita, M.; Kasahara, S. Physical Review B, Vol. 81, Issue 22 https://doi.org/10.1103/PhysRevB.81.220501	journal	June 2010
Octet-Line Node Structure of Superconducting Order Parameter in KFe2As2 Okazaki, K.; Ota, Y.; Kotani, Y. Science, Vol. 337, Issue 6100 https://doi.org/10.1126/science.1222793	journal	September 2012
Revisiting orbital-fluctuation-mediated superconductivity in LiFeAs: Nontrivial spin-orbit interaction effects on the band structure and superconducting gap function Saito, Tetsuro; Yamakawa, Youichi; Onari, Seiichiro Physical Review B, Vol. 92, Issue 13 https://doi.org/10.1103/PhysRevB.92.134522	journal	October 2015

Cited By (1)

Influence of Spin Orbit Coupling in the Iron-Based Superconductors Day, R. P.; Levy, G.; Michiardi, M. arXiv https://doi.org/10.48550/arxiv.1711.06686	text	January 2017

Similar Records

Evolution of magnetism in single-crystal

C a_{2} R u_{1 - x} I r_{x} O_{4} (0 \leq x \leq 0.65)

Journal Article · Fri Jul 24 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1353209

Yuan, S. J.; Terzic, J.; Wang, J. C.; +5 more

Low-temperature magnetoresistance of (111) (

{La}_{0.3} {Sr}_{0.7}) ({Al}_{0.65} {Ta}_{0.35}) O_{3} / {SrTiO}_{3}

Journal Article · Thu Jan 03 00:00:00 EST 2019 · Physical Review B · OSTI ID:1353209

Bal, V. V.; Huang, Z.; Han, K.; +3 more

Hole-induced electronic and optical transitions in

L a_{1 - x} S r_{x} Fe O_{3}

epitaxial thin films

Journal Article · Fri Feb 01 00:00:00 EST 2019 · Physical Review Materials · OSTI ID:1353209

Wang, Le; Du, Yingge; Sushko, Peter V.; +6 more

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Superconductivity
Superconducting gap
Pairing mechanisms

Title: Unusual nodal behaviors of the superconducting gap in the iron-based superconductor Ba ( F e 0.65 R u 0.35 ) 2 A s 2 : Effects of spin-orbit coupling

Citation Formats

References (22)

Cited By (1)

Similar Records

Related Subjects

Title: Unusual nodal behaviors of the superconducting gap in the iron-based superconductor $Ba (F e_{0.65} R u_{0.35})_{2} A s_{2}$ : Effects of spin-orbit coupling