Electronic structure of CrO2 studied by magnetic circular dichroism in resonant photoemission -: art. no. 052407

被引：22

作者：

Chang, CF

Huang, DJ ^{[1
]}

Tanaka, A

Guo, GY

Chung, SC

Kao, ST

Shyu, SG

Chen, CT

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[2] Hiroshima Univ, ADSM, Dept Quantum Matters, Higashihiroshima 7398530, Japan

[3] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[4] Acad Sinica, Inst Chem, Taipei 115, Taiwan

[5] Natl Cent Univ, Dept Chem, Tao Yuan 320, Taiwan

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.71.052407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present studies of magnetic circular dichroism in Cr 2p resonant photoemission of epitaxial CrO2 thin films. The results reveal that the occupied Cr 3d bands center at an energy of 1 eV below the Fermi level, and that photoemission spectral weight originating from Cr 3d is weak. at the Fermi level, confirming the picture of self-doping. We demonstrate that one can use a spin-sensitive spectroscopic technique to separate the contribution of CrO2 from that of Cr2O3 in photoemission spectra to study the electronic structure of CrO2.

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相关论文

共 28 条

[1]

BLAHA P, 2001, WIEN2K COMPUTER CODE

[2] Performance of an elliptically polarized undulator beamline [J].

Chung, SC ;

Chen, J ;

Huang, LR ;

Wu, RT ;

Chen, CC ;

Cheng, NF ;

Chuang, JM ;

Tseng, PC ;

Huang, DJ ;

Chang, CF ;

Perng, SY ;

Chen, CT ;

Tsang, KL .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 467 :445-448

[3] Orbital Kondo effect in CrO2:: A combined local-spin-density-approximation dynamical-mean-field-theory study -: art. no. 237203 [J].

Craco, L ;

Laad, MS ;

Müller-Hartmann, E .

PHYSICAL REVIEW LETTERS, 2003, 90 (23) :4

[4] Characterization of the natural barriers of intergranular tunnel junctions:: Cr2O3 surface layers on CrO2 nanoparticles [J].

Dai, JB ;

Tang, JK ;

Xu, HP ;

Spinu, L ;

Wang, WD ;

Wang, KY ;

Kumbhar, A ;

Li, M ;

Diebold, U .

APPLIED PHYSICS LETTERS, 2000, 77 (18) :2840-2842

[5] Room-temperature observation of high-spin polarization of epitaxial CrO2(100) island films at the Fermi energy [J].

Dedkov, YS ;

Fonine, M ;

König, C ;

Rüdiger, U ;

Güntherodt, G ;

Senz, S ;

Hesse, D .

APPLIED PHYSICS LETTERS, 2002, 80 (22) :4181-4183

[6] NEW CLASS OF MATERIALS - HALF-METALLIC FERROMAGNETS [J].

DEGROOT, RA ;

MUELLER, FM ;

VANENGEN, PG ;

BUSCHOW, KHJ .

PHYSICAL REVIEW LETTERS, 1983, 50 (25) :2024-2027

[7] Magnetic anisotropy of textured CrO2 thin films investigated by X-ray magnetic circular dichroism [J].

Goering, E ;

Justen, M ;

Geissler, J ;

Rüdiger, U ;

Rabe, M ;

Güntherodt, G ;

Schütz, G .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (06) :747-753

[8] Orbital magnetic moments of oxygen and chromium in CrO2 -: art. no. 174440 [J].

Huang, DJ ;

Jeng, HT ;

Chang, CF ;

Guo, GY ;

Chen, J ;

Wu, WP ;

Chung, SC ;

Shyu, SG ;

Wu, CC ;

Lin, HJ ;

Chen, CT .

PHYSICAL REVIEW B, 2002, 66 (17) :1-5

[9] Anomalous spin polarization and dualistic electronic nature of CrO2 -: art. no. 214419 [J].

Huang, DJ ;

Tjeng, LH ;

Chen, J ;

Chang, CF ;

Wu, WP ;

Chung, SC ;

Tanaka, A ;

Guo, GY ;

Lin, HJ ;

Shyu, SG ;

Wu, CC ;

Chen, CT .

PHYSICAL REVIEW B, 2003, 67 (21)

[10] Various polarization features of a variably polarized undulator with different phasing modes [J].

Hwang, CS ;

Yeh, ST .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 420 (1-2) :29-38