2009
DOI: 10.1103/physrevb.80.184501
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Band structure and Fermi surface of(Sr2VO3)2Fe2As

Abstract: Inspired by the experience in CuO-based superconductor that larger spacing distance between CuO planes induced higher superconductivity transition temperature ͑T C ͒, some researchers synthesized ͑Sr 2 ScO 3 ͒ 2 Fe 2 As 2 and ͑Sr 2 VO 3 ͒ 2 Fe 2 As 2 with the spacing distance between FeAs layers as large as 15.66 Å and found a T C of 37.2 K in the latter compound. Our density-functional calculations indicate that the ground states of ͑Sr 2 ScO 3 ͒ 2 Fe 2 As 2 and ͑Sr 2 VO 3 ͒ 2 Fe 2 As 2 are stripe antiferroma… Show more

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Cited by 26 publications
(17 citation statements)
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“…The observed superconductivity without extrinsic doping challenges the above paradigm, and immediately aroused several first-principles calculations. [18][19][20][21][22] However, the occurrence of superconductivity in the apparently undoped V21113 has not been clarified. Moreover, the calculated property of the Sr 4 V 2 O 6 layers is very much scattered: including magnetic half-metallic, 18 nonmagnetic metallic, 19,20 and magnetic ͑Mott-type͒ insulating 22 states.…”
Section: Introductionmentioning
confidence: 99%
“…The observed superconductivity without extrinsic doping challenges the above paradigm, and immediately aroused several first-principles calculations. [18][19][20][21][22] However, the occurrence of superconductivity in the apparently undoped V21113 has not been clarified. Moreover, the calculated property of the Sr 4 V 2 O 6 layers is very much scattered: including magnetic half-metallic, 18 nonmagnetic metallic, 19,20 and magnetic ͑Mott-type͒ insulating 22 states.…”
Section: Introductionmentioning
confidence: 99%
“…This has been confirmed by the calculations of Lindhard response function. 13,[15][16][17][18] The importance of spin fluctuations due to the nesting feature of FS and a possibility of s ± superconducting-gap symmetry have been proposed. 19,20 Experimentally, FS similar to the DFT results 21,22 and AFM ordering in the parent compounds [23][24][25] have been observed.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, there are some other common features in the iron-based superconductors, i.e., antiferromagnetic (AFM) ordering in the parent compound, nesting feature of the Fermi surfaces (FS), and so on. FS of these iron-based superconductors have been calculated on the basis of the density functional theory (DFT) [12][13][14][15] and it has been pointed that hole FS around Γ point and electron FS around M point are nearly nested. This has been confirmed by the calculations of Lindhard response function.…”
Section: Introductionmentioning
confidence: 99%
“…Firstly, the striped anti-ferromagnetic (S-AFM) states are the ground states of their parent samples taking (Na, Li)FeAs, 4,22,23) (Sr, Ba, Ca, Eu)Fe 2 As 2 , [24][25][26][27][28][29] LnOFeAs [30][31][32][33] (Ln = La, Nd, Ce, Pr), (Ca, Sr)FeAsF, [34][35][36] and (Sr 2 VO 3 ) 2 Fe 2 As 2 37) for example. Secondly, generally, the iron arsenide superconductors have the property of nested Fermi surfaces, taking (Ba, Sr)Fe 2 As 2 , 38,39) LaOFeAs, 40) and (Sr 2 VO 3 ) 2 Fe 2 As 2 41,42) for instance. The competition between magnetic order and superconductivity is one of the main features of iron-based superconductors.…”
Section: Introductionmentioning
confidence: 99%