Temperature Dependence of the Electronic Structure and Fermi-Surface Reconstruction of Eu1-xGdxO through the Ferromagnetic Metal-Insulator Transition

被引：17

作者：

Shai, D. E. ^{[1
]}

Melville, A. J. ^{[2
]}

Harter, J. W. ^{[1
]}

Monkman, E. J. ^{[1
]}

Shen, D. W. ^{[1
]}

Schmehl, A. ^{[3
]}

Schlom, D. G. ^{[2
,4
]}

Shen, K. M. ^{[1
,4
]}

机构：

[1] Cornell Univ, Dept Phys, Lab Atom & Solid State Phys, Ithaca, NY 14853 USA

[2] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[3] Univ Augsburg, Zentrum Elekt Korrelat & Magnetismus, D-86159 Augsburg, Germany

[4] Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 26期

基金：

美国国家科学基金会;

关键词：

EUO; PHOTOEMISSION;

D O I：

10.1103/PhysRevLett.108.267003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present angle-resolved photoemission spectroscopy of Eu1-xGdxO through the ferromagnetic metal-insulator transition. In the ferromagnetic phase, we observe Fermi surface pockets at the Brillouin zone boundary, consistent with density functional theory, which predicts a half-metal. Upon warming into the paramagnetic state, our results reveal a strong momentum-dependent evolution of the electronic structure, where the metallic states at the zone boundary are replaced by pseudogapped states at the Brillouin zone center due to the absence of magnetic long-range order of the Eu 4f moments.

引用

页数：5

共 27 条

[1] Strain-Induced Ferroelectricity in Simple Rocksalt Binary Oxides [J].

Bousquet, Eric ;

Spaldin, Nicola A. ;

Ghosez, Philippe .

PHYSICAL REVIEW LETTERS, 2010, 104 (03)

[2] Fermi surface nesting and nanoscale fluctuating charge/orbital ordering in colossal magnetoresistive oxides [J].

Chuang, YD ;

Gromko, AD ;

Dessau, DS ;

Kimura, T ;

Tokura, Y .

SCIENCE, 2001, 292 (5521) :1509-1513

[3] PHOTOEMISSION STUDIES OF ELECTRONIC STRUCTURE OF EUO, EUS, EUSE, AND GDS [J].

EASTMAN, DE ;

HOLTZBERG, F ;

METHFESSEL, S .

PHYSICAL REVIEW LETTERS, 1969, 23 (05) :226-+

[4] Influence of epitaxial strain on the ferromagnetic semiconductor EuO: First-principles calculations [J].

Ingle, N. J. C. ;

Elfimov, I. S. .

PHYSICAL REVIEW B, 2008, 77 (12)

[5] Is There an Intrinsic Limit to the Charge-Carrier-Induced Increase of the Curie Temperature of EuO? [J].

Mairoser, T. ;

Schmehl, A. ;

Melville, A. ;

Heeg, T. ;

Canella, L. ;

Boeni, P. ;

Zander, W. ;

Schubert, J. ;

Shai, D. E. ;

Monkman, E. J. ;

Shen, K. M. ;

Schlom, D. G. ;

Mannhart, J. .

PHYSICAL REVIEW LETTERS, 2010, 105 (25)

[6]

Mairoser T., 2009, THESIS U AUGSBURG

[7] Nodal quasiparticle in pseudogapped colossal magnetoresistive manganites [J].

Mannella, N ;

Yang, WL ;

Zhou, XJ ;

Zheng, H ;

Mitchell, JF ;

Zaanen, J ;

Devereaux, TP ;

Nagaosa, N ;

Hussain, Z ;

Shen, ZX .

NATURE, 2005, 438 (7067) :474-478

[8] Preparation of Gd-doped EuO1-x thin films and the magnetic and magneto-transport properties [J].

Matsumoto, T ;

Yamaguchi, K ;

Yuri, M ;

Kawaguchi, K ;

Koshizaki, N ;

Yamada, K .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (34) :6017-6028

[9] Direct Observation of Momentum-Dependent Exchange Interaction in a Heisenberg Ferromagnet [J].

Miyazaki, H. ;

Ito, T. ;

Im, H. J. ;

Yagi, S. ;

Kato, M. ;

Soda, K. ;

Kimura, S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (22)

[10] INSULATOR-METAL TRANSITION AND LONG-RANGE MAGNETIC ORDER IN EUO [J].

PENNEY, T ;

SHAFER, MW ;

TORRANCE, JB .

PHYSICAL REVIEW B-SOLID STATE, 1972, 5 (09) :3669-+

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