Direct evidence for itinerant magnetite above and below the Verwey transition temperature

被引：6

作者：

Cai, YQ

Nakatsuji, K

Ohno, S

Iimori, T

Yamada, M

Komori, F

机构：

[1] Japan Sci & Technol Corp, CREST, Tsukuba, Ibaraki, Japan

[2] Synchrotron Radiat Res Ctr, Hsinchu 30077, Taiwan

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

SURFACE REVIEW AND LETTERS | 2002年 / 9卷 / 02期

关键词：

D O I：

10.1142/S0218625X02003147

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The valence electronic states of Fe3O4(111) films on Pt(111) were studied using temperature-dependent spin- and angle-resolved photoemission spectroscopy with synchrotron radiation. The majority- and minority-spin partial density of states (DOS) has been obtained at 300 X and 100 K, above and below the Verwey transition temperature (T-V similar to 120 K). The spectra still show substantial k-dependence at 100 K in the 3d region, This provides the most direct experimental evidence that the 3d electrons are itinerant even at T < T-V.

引用

页码：907 / 912

页数：6

共 29 条

[1] OBSERVATION OF SPIN-POLARIZED ELECTRON LEVELS IN FERRITES [J].

ALVARADO, SF ;

EIB, W ;

MEIER, F ;

PIERCE, DT ;

SATTLER, K ;

SIEGMANN, HC ;

REMEIKA, JP .

PHYSICAL REVIEW LETTERS, 1975, 34 (06) :319-322

[2] FINAL-STATE EFFECTS IN 3D PHOTOELECTRON-SPECTRUM OF FE3O4 AND COMPARISON WITH FEXO [J].

ALVARADO, SF ;

ERBUDAK, M ;

MUNZ, P .

PHYSICAL REVIEW B, 1976, 14 (07) :2740-2745

[3] BAND THEORY AND MOTT INSULATORS - HUBBARD-U INSTEAD OF STONER-I [J].

ANISIMOV, VI ;

ZAANEN, J ;

ANDERSEN, OK .

PHYSICAL REVIEW B, 1991, 44 (03) :943-954

[4] Charge-ordered insulating state of Fe3O4 from first-principles electronic structure calculations [J].

Anisimov, VI ;

Elfimov, IS ;

Hamada, N ;

Terakura, K .

PHYSICAL REVIEW B, 1996, 54 (07) :4387-4390

[5] MAGNETITE FE3O4(111) - SURFACE-STRUCTURE BY LEED CRYSTALLOGRAPHY AND ENERGETICS [J].

BARBIERI, A ;

WEISS, W ;

VANHOVE, MA ;

SOMORJAI, GA .

SURFACE SCIENCE, 1994, 302 (03) :259-279

[6] Valence-band structure of epitaxially grown Fe3O4(111) films [J].

Cai, YQ ;

Ritter, M ;

Weiss, W ;

Bradshaw, AM .

PHYSICAL REVIEW B, 1998, 58 (08) :5043-5051

[7] HIGH-RESOLUTION PHOTOEMISSION SPECTROSCOPY OF THE VERWEY TRANSITION IN FE3O4 [J].

CHAINANI, A ;

YOKOYA, T ;

MORIMOTO, T ;

TAKAHASHI, T ;

TODO, S .

PHYSICAL REVIEW B, 1995, 51 (24) :17976-17979

[8] Resonant "forbidden" reflections in magnetite [J].

García, J ;

Subías, G ;

Proietti, MG ;

Renevier, H ;

Joly, Y ;

Hodeau, JL ;

Blasco, J ;

Sánchez, MC ;

Bérar, JF .

PHYSICAL REVIEW LETTERS, 2000, 85 (03) :578-581

[9] Absence of charge ordering below the Verwey transition temperature in magnetite -: art. no. 054110 [J].

García, J ;

Subías, G ;

Proietti, MG ;

Blasco, J ;

Renevier, H ;

Hodeau, JL ;

Joly, Y .

PHYSICAL REVIEW B, 2001, 63 (05)

[10]

Huang Dah-Min, COMMUNICATION

← 1 2 3 →