Electronic structure of Ca1-xSrxVO3:: A tale of two energy scales

被引：100

作者：

Maiti, K

Sarma, DD

Rozenberg, MJ

Inoue, IH

Makino, H

Goto, O

Pedio, M

Cimino, R

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[2] Univ Buenos Aires, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

[3] PRESTO, JST, Tsukuba, Ibaraki 3058568, Japan

[4] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

[5] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[6] NEC Corp Ltd, Nakahara Ku, Kawasaki, Kanagawa 2118666, Japan

[7] CNR, Ist Struttura Mat, I-00133 Rome, Italy

[8] Ist Nazl Fis Nucl, Sez Trieste, Lab Area Ric, I-34012 Trieste, Italy

[9] Indian Inst Sci, Jawaharlal Nehru Ctr Adv Sci Res, Bangalore 560012, Karnataka, India

来源：

EUROPHYSICS LETTERS | 2001年 / 55卷 / 02期

关键词：

D O I：

10.1209/epl/i2001-00406-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the electronic structure of Ca1-xSrxVO3 using photoemission spectroscopy. Core level spectra establish an electronic phase separation at the surface, leading to a distinctly different surface electronic structure compared to the bulk. Analysis of the photoemission spectra of this system allowed us to separate the surface and bulk contributions. These results help us to understand properties related to two vastly differing energy scales, namely the low-energy scale of thermal excitations (similar tok(B)T) and the high-energy scale related to Coulomb and other electronic interactions.

引用

页码：246 / 252

页数：7

共 21 条

[1] MODEL FOR ELECTRONIC-STRUCTURE OF AMORPHOUS-SEMICONDUCTORS [J].