Laser-excited ultrahigh-resolution photoemission spectroscopy of borocarbide superconductor RNi2B2C(R = Y and Er)

被引：2

作者：

Baba, T. ^{[1
]}

Yokoya, T.

Tsuda, S.

Kiss, T.

Shimojima, T.

Shin, S.

Togashi, T.

Chen, C. T.

Zhang, C. Q.

Watanabe, S.

Watanabe, T.

Nohara, M.

Takagi, H.

机构：

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

[2] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[3] Chinese Acad Sci, Beijing Ctr Crystal R&D, Beijing 100080, Peoples R China

[4] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2006年 / 445卷 / 1-2期

关键词：

anisotropic superconductor; antiferromagnetic superconductor; photoemission spectroscopy;

D O I：

10.1016/j.physc.2006.03.074

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present laser-excited ultrahigh-resolution photoemission spectroscopy of YNi2B2C and ErNi2B2C. The extremely high energy resolution enables us to discuss the superconducting (SC) gap function of YNi2B2C and to measure the density of states which is coexisted between superconductivity and antiferromagnetism in ErNiAC. For YNi2B2C, s + g-wave SC gap symmetry cannot reproduce the experimental data, implying importance of taking the complicated electronic structures into consideration. For ErNi2B2C, the observed coherent peak is very broad and finite density of state exists at Fermi level. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：46 / 49

页数：4

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