Chemical potential shift in overdoped and underdoped La2-xSrxCuO4

被引：210

作者：

Ino, A ^{[1
]}

Mizokawa, T ^{[1
]}

Fujimori, A ^{[1
]}

Tamasaku, K ^{[1
]}

Eisaki, H ^{[1
]}

Uchida, S ^{[1
]}

Kimura, T ^{[1
]}

Sasagawa, T ^{[1
]}

Kishio, K ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT SUPERCONDUCT,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.79.2101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The downward shift of the electron chemical potential mu with hole doping in La2-xSrxCuO4 has been deduced from the shifts of photoemission and inverse-photoemission spectra. While the shift is large (similar to 1.5 eV/hole) in overdoped samples, it is suppressed (<0.2 eV/hole) in underdoped samples, implying a divergent charge susceptibility near the metal-insulator transition. In the overdoped regime, the mu and the electronic specific heat coefficient gamma are consistently explained within Fermi-liquid theory, whereas the same analysis gives unphysical results in the underdoped regime, indicating the breakdown of the Fermi-liquid picture in the underdoped regime.

引用

收藏

页码：2101 / 2104

页数：4

相关论文

共 34 条

[1] RESONANT PHOTOEMISSION-STUDY OF ND2-XCEXCUO4-Y - NATURE OF ELECTRONIC STATES NEAR THE FERMI LEVEL [J].

ALLEN, JW ;

OLSON, CG ;

MAPLE, MB ;

KANG, JS ;

LIU, LZ ;

PARK, JH ;

ANDERSON, RO ;

ELLIS, WP ;

MARKERT, JT ;

DALICHAOUCH, Y ;

LIU, R .

PHYSICAL REVIEW LETTERS, 1990, 64 (05) :595-598

[2] RELATION BETWEEN STRUCTURE AND DOPING IN LA2-XSRXCUO4+DELTA - A NEUTRON-DIFFRACTION STUDY ON SINGLE-CRYSTALS [J].

BRADEN, M ;

SCHWEISS, P ;

HEGER, G ;

REICHARDT, W ;

FISK, Z ;

GAMAYUNOV, K ;

TANAKA, I ;

KOJIMA, H .

PHYSICA C, 1994, 223 (3-4) :396-416

[3] FREQUENCY-DEPENDENCE OF THE CONDUCTIVITY AND DIELECTRIC-CONSTANT OF LA2CUO4+Y NEAR THE INSULATOR-METAL TRANSITION [J].

CHEN, CY ;

PREYER, NW ;

PICONE, PJ ;

KASTNER, MA ;

JENSSEN, HP ;

GABBE, DR ;

CASSANHO, A ;

BIRGENEAU, RJ .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2307-2310

[4] LA2CUO4+DELTA AND LA2NIO4+-DELTA - PHASE-SEPARATION RESULTING FROM EXCESS OXYGEN DEFECTS [J].

DABROWSKI, B ;

JORGENSEN, JD ;

HINKS, DG ;

PEI, S ;

RICHARDS, DR ;

VANFLEET, HB ;

DECKER, DL .

PHYSICA C, 1989, 162 :99-100

[5] DENSITY OF STATES OF DOPED HUBBARD CLUSTERS [J].

DAGOTTO, E ;

MOREO, A ;

ORTOLANI, F ;

RIERA, J ;

SCALAPINO, DJ .

PHYSICAL REVIEW LETTERS, 1991, 67 (14) :1918-1921

[6] Incipient antiferromagnetism and low-energy excitations in the half-filled two-dimensional hubbard model [J].

Deisz, JJ ;

Hess, DW ;

Serene, JW .

PHYSICAL REVIEW LETTERS, 1996, 76 (08) :1312-1315

[7] Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors [J].

Ding, H ;

Yokoya, T ;

Campuzano, JC ;

Takahashi, T ;

Randeria, M ;

Norman, MR ;

Mochiku, T ;

Kadowaki, K ;

Giapintzakis, J .

NATURE, 1996, 382 (6586) :51-54

[8]

ESKES H, 1994, PHYS REV B, V50, P11980

[9] CHARGE MASS SINGULARITY IN 2-DIMENSIONAL HUBBARD-MODEL [J].

FURUKAWA, N ;

IMADA, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (08) :2557-2560

[10] 2-DIMENSIONAL HUBBARD-MODEL - METAL-INSULATOR-TRANSITION STUDIED BY MONTE-CARLO CALCULATION [J].

FURUKAWA, N ;

IMADA, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (09) :3331-3354

← 1 2 3 4 →