Large Temperature Dependence of the Number of Carriers in Co-Doped BaFe2As2

被引：62

作者：

Brouet, V. ^{[1
]}

Lin, Ping-Hui ^{[1
]}

Texier, Y. ^{[1
]}

Bobroff, J. ^{[1
]}

Taleb-Ibrahimi, A. ^{[2
]}

Le Fevre, P. ^{[2
]}

Bertran, F. ^{[2
]}

Casula, M. ^{[3
]}

Werner, P. ^{[4
]}

Biermann, S. ^{[5
]}

Rullier-Albenque, F. ^{[6
]}

Forget, A. ^{[6
]}

Colson, D. ^{[6
]}

机构：

[1] Univ Paris 11, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[2] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France

[3] Univ Paris 06, CNRS, Inst Mineral & Phys Milieux Condenses, F-75252 Paris, France

[4] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

[5] Ecole Polytech, Ctr Phys Theor, UMR 7644, F-91128 Palaiseau, France

[6] CEA Saclay, CNRS URA 2464, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 16期

关键词：

26;

D O I：

10.1103/PhysRevLett.110.167002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using angle-resolved photoemission spectroscopy, we study the evolution of the number of carriers in Ba(Fe1-xCox)(2)As-2 as a function of Co content and temperature. We show that there is a k-dependent energy shift compared to density functional calculations, which is large below 100 K at low Co contents and reduces the volume of hole and electron pockets by a factor 2. This k shift becomes negligible at high Co content and could be due to interband charge or spin fluctuations. We further reveal that the bands shift with temperature, changing significantly the number of carriers they contain (up to 50%). We explain this evolution by thermal excitations of carriers among the narrow bands, possibly combined with a temperature evolution of the k-dependent fluctuations. DOI: 10.1103/PhysRevLett.110.167002

引用

页数：5

共 50 条

[1] Charge dynamics of Co-doped BaFe2As2
Lucarelli, A.
Dusza, A.
Pfuner, F.
Lerch, P.
Analytis, J. G.
Chu, J-H
Fisher, I. R.
Degiorgi, L.
NEW JOURNAL OF PHYSICS, 2010, 12
[2] Vortex imaging in Co-doped BaFe2As2
Eskildsen, M. R.
Vinnikov, L. Ya.
Veshchunov, I. S.
Artemova, T. M.
Blasius, T. D.
Densmore, J. M.
Dewhurst, C. D.
Ni, N.
Kreyssig, A.
Bud'ko, S. L.
Canfield, P. C.
Goldman, A. I.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2009, 469 (9-12): : 529 - 534
[3] Thermal transport studies on Co-doped BaFe2As2
Machida, Y.
Tomokuni, K.
Isono, T.
Izawa, K.
Nakajima, Y.
Tamegai, T.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 : S478 - S479
[4] Comparative study of pure and Co-doped BaFe2As2
Soullard, Jacques
Perez-Enriquez, Raul
Kaplan, Ilya G.
PHYSICAL REVIEW B, 2015, 91 (18)
[5] Thickness dependence of structural and superconducting properties of Co-doped BaFe2As2 coated conductors
Xu, Zhongtang
Dong, Chiheng
Cai, Chuanbing
Yuan, Pusheng
Ma, Yanwei
ISCIENCE, 2021, 24 (08)
[6] Doping dependence of magnetic and transport properties in single crystalline Co-doped BaFe2As2
Nakajima, Yasuyuki
Taen, Toshihiro
Tamegai, Tsuyoshi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 : S408 - S410
[7] Vortex dynamics in proton irradiated Co-doped BaFe2As2
Taen, T.
Nakajima, Y.
Tamegai, T.
Kitamura, H.
Murakami, T.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2011, 471 (21-22): : 784 - 786
[8] Superconductivity at 22 K in Co-doped BaFe2As2 crystals
Sefat, Athena S.
Jin, Rongying
McGuire, Michael A.
Sales, Brian C.
Singh, David J.
Mandrus, David
PHYSICAL REVIEW LETTERS, 2008, 101 (11)
[9] Incommensurate spin density wave in Co-doped BaFe2As2
Bonville, P.
Rullier-Albenque, F.
Colson, D.
Forget, A.
EPL, 2010, 89 (06)
[10] Characterization of epitaxial Co-doped BaFe2As2 thin films
Mohan, S.
Taen, T.
Yagyuda, H.
Nakajima, Y.
Tamegai, T.
Katase, T.
Hiramatsu, H.
Hosono, H.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2011, 471 (21-22): : 1181 - 1184

← 1 2 3 4 5 →