Impurity-induced moments in underdoped cuprates

被引：38

作者：

Khaliullin, G ^{[1
]}

Kilian, R ^{[1
]}

Krivenko, S ^{[1
]}

Fulde, P ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,KAZAN PHYSICOTECH INST,KAZAN 420029,RUSSIA

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.56.11882

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examine the effect of a nonmagnetic impurity in a two-dimensional spin liquid in the spin-gap phase, employing a drone-fermion representation of spin-1/2 operators. The properties of the local moment induced in the vicinity of the impurity are investigated and an expression for the nuclear-magnetic-resonance Knight shift is derived, which we compare with experimental results. Introducing a second impurity into the spin liquid an antiferromagnetic interaction between the moments is found when the two impurities are located on different sublattices. The presence of many impurities leads to a screening of this interaction as is shown by means of a coherent-potential approximation. Further, the Kondo screening of an impurity-induced local spin by charge carriers is discussed. [S0163-1829(97)01542-7].

引用

页码：11882 / 11888

页数：7

共 22 条

[1] LARGE-N LIMIT OF THE HEISENBERG-HUBBARD MODEL - IMPLICATIONS FOR HIGH-TC SUPERCONDUCTORS
AFFLECK, I
MARSTON, JB
[J]. PHYSICAL REVIEW B, 1988, 37 (07) : 3774 - 3777
[2] RIGOROUS RESULTS ON VALENCE-BOND GROUND-STATES IN ANTIFERROMAGNETS
AFFLECK, I
KENNEDY, T
LIEB, EH
TASAKI, H
[J]. PHYSICAL REVIEW LETTERS, 1987, 59 (07) : 799 - 802
[3] CORRELATIONS BETWEEN MAGNETIC AND SUPERCONDUCTING PROPERTIES OF ZN-SUBSTITUTED YBA2CU3O6+X
ALLOUL, H
MENDELS, P
CASALTA, H
MARUCCO, JF
ARABSKI, J
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (22) : 3140 - 3143
[4] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY
ANDERSON, PW
[J]. SCIENCE, 1987, 235 (4793) : 1196 - 1198
[5] STATIC VACANCIES ON A 2D HEISENBERG SPIN-1/2 ANTIFERROMAGNET
BULUT, N
HONE, D
SCALAPINO, DJ
LOH, EY
[J]. PHYSICAL REVIEW LETTERS, 1989, 62 (18) : 2192 - 2195
[6] Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors
Ding, H
Yokoya, T
Campuzano, JC
Takahashi, T
Randeria, M
Norman, MR
Mochiku, T
Kadowaki, K
Giapintzakis, J
[J]. NATURE, 1996, 382 (6586) : 51 - 54
[7] EFFECTS OF ZN SUBSTITUTION FOR CU ATOMS IN LANTHANUM STRONTIUM SUPERCONDUCTORS
FINKELSTEIN, AM
KATAEV, VE
KUKOVITSKII, EF
TEITELBAUM, GB
[J]. PHYSICA C, 1990, 168 (3-4): : 370 - 380
[8] GRADSHTEYN IS, 1994, TABLE INTEGRALS SERI, pCH8
[9] Al NMR probe of local moments induced by an Al impurity in high-T-c cuprate La1.85Sr0.15CuO4
Ishida, K
Kitaoka, Y
Yamazoe, K
Asayama, K
Yamada, Y
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (03) : 531 - 534
[10] RESONATING VALENCE BONDS AND D-WAVE SUPERCONDUCTIVITY
KOTLIAR, G
[J]. PHYSICAL REVIEW B, 1988, 37 (07): : 3664 - 3666

← 1 2 3 →