有哪些信誉好的足球投注网站- 1、本文档共6页，可阅读全部内容。
- 2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
- 3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
查看更多
Combined potential and spin impurity scattering in cuprates
a
r
X
i
v
:
c
o
n
d
-
m
a
t
/
0
0
1
1
4
3
7
v
1
[
c
o
n
d
-
m
a
t
.s
u
p
r
-
c
o
n
]
2
6
N
o
v
2
0
0
0
Combined potential and spin impurity scattering in cuprates
G. Haran?? and A.D.S. Nagi?
?Institute of Physics, Politechnika Wroc lawska, Wybrzez?e Wyspian?skiego 27, 50-370 Wroc law, Poland
?Department of Physics, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1
(11 September 2000)
We present a theory of combined nonmagnetic and magnetic impurity scattering in anisotropic
superconductors accounting for the momentum-dependent impurity potential. Applying the model
to the d-wave superconducting state, we obtain a quantitative agreement with the initial suppression
of the critical temperature due to Zn and Ni substitutions as well as electron irradiation defects in
the cuprates. We suggest, that the unequal pair-breaking effect of Zn and Ni may be related to a
different nature of the magnetic moments induced by these impurities.
Impurities offer a useful experimental probe of the fundamental properties of high temperature superconductors.
Controlled substitutions of 3d transition metals (Zn, Ni) provide indirect information on the nature of the pairing
mechanism since they affect the physical properties of both the superconducting and normal state. The nominally
nonmagnetic Zn (3d10, S = 0) as well as magnetic Ni (3d8, S = 1) atoms reside in the magnetically active in-plane Cu
(3d9, S = 1/2) sites. Macroscopic susceptibility and NMRmeasurements1–5 of Y Ba2Cu3O7?δ (Y-123) superconductor
indicate the impurity-induced magnetic moments of 0.86μB for Zn, and 1.9μB for Ni in the underdoped compound,
which decrease with hole doping to 0.36μB/Zn and 1.6μB/Ni in the optimally doped system. In La2?xSrxCuO4
(La-214) the same impurity substitutions lead to magnetic properties corresponding to local magnetic moments of
1.0μB/Zn and 0.6μB/Ni.
6 Magnetism generated by Zn and Ni atoms is, however, different in nature. Whereas,
the Zn-induced moments reside in the vi
您可能关注的文档
- characteristics of stemflow for tall stewartia growing on a hillslope.pdf
- Characteristics and sources of chromophoric dissolved organic matter in lakes of the Yungui Plateau.pdf
- Characterization of Electrochemically Grown Crystalline CuInSe2 Thin Films.pdf
- Characterization of PM2.5 in the ambientair of Shanghaicity by analyzingindividualparticles.pdf
- Characterizations of essential ideals as operator modules over C-algebras.pdf
- Characterizing packet audio streams from internet multimedia applications.pdf
- Charge amplification concepts for direction-sensitive dark matter detectors.pdf
- Charge carriers of different origin in cuprates as revealed by experiment.pdf
- Charge collective modes in an incommensurately modulated cuprate.pdf
- Charge exchange for medium energy He and Ne ions in a large-angle collision at solid surfaces.pdf
文档评论（0）