Electronic structure near the quantum critical point in V-doped Cr-A high-resolution photoemission study

被引：8

作者：

Adhikary, Ganesh ^{[1
]}

Bindu, R. ^{[1
]}

Pandey, Sudhir K. ^{[1
]}

Maiti, Kalobaran ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India

来源：

EPL | 2012年 / 99卷 / 03期

关键词：

PHASE-TRANSITION; FERMI-LIQUID; SURFACE; EXCITATIONS; DIFFUSION; CHROMIUM; PARTICLE; CR(100); ABSENCE; METALS;

D O I：

10.1209/0295-5075/99/37009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the evolution of the electronic structure across the quantum critical point in V-doped Cr employing high-resolution photoemission spectroscopy. Experimental results exhibit signatures of pseudogap and orbital Kondo resonance peak at low temperatures for all the compositions studied. The pseudogap and the Kondo peak reduce with V doping but remain finite across the quantum critical point indicating their relevance in widely discussed quantum phases in correlated electron systems. The spectral lineshape near the Fermi level exhibit (epsilon(F) - epsilon)(0.25) dependence evidencing deviation from Fermi-liquid behavior. Copyright (C) EPLA, 2012

引用

页数：6

共 39 条

[1] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].