Literature DB >> 18851561

Momentum dependence of the superconducting gap in NdFeAsO0.9F0.1 single crystals measured by angle resolved photoemission spectroscopy.

Takeshi Kondo1, A F Santander-Syro, O Copie, Chang Liu, M E Tillman, E D Mun, J Schmalian, S L Bud'ko, M A Tanatar, P C Canfield, A Kaminski.   

Abstract

We use angle resolved photoemission spectroscopy to study the momentum dependence of the superconducting gap in NdFeAsO0.9F0.1 single crystals. We find that the Gamma hole pocket is fully gapped below the superconducting transition temperature. The value of the superconducting gap is 15+/-1.5 meV and its anisotropy around the hole pocket is smaller than 20% of this value-consistent with an isotropic or anisotropic s-wave symmetry of the order parameter. This is a significant departure from the situation in the cuprates, pointing to the possibility that the superconductivity in the iron arsenic based system arises from a different mechanism.

Entities:  

Year:  2008        PMID： 18851561     DOI： 10.1103/PhysRevLett.101.147003

Source DB:  PubMed          Journal:  Phys Rev Lett        ISSN： 0031-9007            Impact factor:   9.161


  7 in total

1.  Fermi surface dichotomy of the superconducting gap and pseudogap in underdoped pnictides.

Authors:  Y M Xu; P Richard; K Nakayama; T Kawahara; Y Sekiba; T Qian; M Neupane; S Souma; T Sato; T Takahashi; H Q Luo; H H Wen; G F Chen; N L Wang; Z Wang; Z Fang; X Dai; H Ding
Journal:  Nat Commun       Date:  2011-07-12       Impact factor: 14.919

2.  Nodeless superconducting gap in A(x)Fe2Se2 (A=K,Cs) revealed by angle-resolved photoemission spectroscopy.

Authors:  Y Zhang; L X Yang; M Xu; Z R Ye; F Chen; C He; H C Xu; J Jiang; B P Xie; J J Ying; X F Wang; X H Chen; J P Hu; M Matsunami; S Kimura; D L Feng
Journal:  Nat Mater       Date:  2011-02-27       Impact factor: 43.841

3.  Anisotropic structure of the order parameter in FeSe(0.45)Te(0.55) revealed by angle-resolved specific heat.

Authors:  B Zeng; G Mu; H Q Luo; T Xiang; I I Mazin; H Yang; L Shan; C Ren; P C Dai; H-H Wen
Journal:  Nat Commun       Date:  2010-11-16       Impact factor: 14.919

4.  Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor.

Authors:  A Charnukha; S Thirupathaiah; V B Zabolotnyy; B Büchner; N D Zhigadlo; B Batlogg; A N Yaresko; S V Borisenko
Journal:  Sci Rep       Date:  2015-05-21       Impact factor: 4.379

5.  Effect of pressure on normal and superconducting state properties of iron based superconductor PrFeAsO0.6F y (y = 0.12, 0.14).

Authors:  S Arumugam; C Ganguli; R Thiyagarajan; D Bhoi; G Kalai Selvan; K Manikandan; A Pariari; P Mandal; Y Uwatoko
Journal:  Sci Rep       Date:  2017-09-15       Impact factor: 4.379

6.  Characteristic two-dimensional Fermi surface topology of high-Tc iron-based superconductors.

Authors:  Masanori Sunagawa; Toshihiko Ishiga; Koji Tsubota; Taihei Jabuchi; Junki Sonoyama; Keita Iba; Kazutaka Kudo; Minoru Nohara; Kanta Ono; Hiroshi Kumigashira; Tomohiro Matsushita; Masashi Arita; Kenya Shimada; Hirofumi Namatame; Masaki Taniguchi; Takanori Wakita; Yuji Muraoka; Takayoshi Yokoya
Journal:  Sci Rep       Date:  2014-03-14       Impact factor: 4.379

7.  High-temperature superconductivity from fine-tuning of Fermi-surface singularities in iron oxypnictides.

Authors:  A Charnukha; D V Evtushinsky; C E Matt; N Xu; M Shi; B Büchner; N D Zhigadlo; B Batlogg; S V Borisenko
Journal:  Sci Rep       Date:  2015-12-18       Impact factor: 4.379
  7 in total

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