Quantum impurities and the neutron resonance peak in YBa2Cu3O7:: Ni versus Zn

被引：79

作者：

Sidis, Y ^{[1
]}

Bourges, P

Fong, HF

Keimer, B

Regnault, LP

Bossy, J

Ivanov, A

Hennion, B

Gautier-Picard, P

Collin, G

Millius, DL

Aksay, IA

机构：

[1] CE Saclay, CNRS, CEA, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[4] CEA Grenoble, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

[5] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble 9, France

[6] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[7] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 25期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.84.5900

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of magnetic (S = 1) and nonmagnetic (S = 0) impurities on the spin dynamics of an optimally doped high temperature superconductor is compared in YBa2(Cu0.97Ni0.03)(3)O-7 (T-e = 80 K) and YBa2(Cu0.99Zn0.01)(3)O-7 (T-c = 78 K). In the Ni-substituted system, the magnetic resonance peak (which is observed at E-r similar or equal to 40 meV in the purl system) shifts to lower energy with a preserved E-r/T-e ratio while the shift is much smaller upon Zn substitution. By contrast Zn, but not Ni, restores significant spin fluctuations around 40 meV in the normal state. These observations are discussed in the light of models proposed for the magnetic resonance peak.

引用

页码：5900 / 5903

页数：4

共 23 条

[1]

Bourges P, 1999, AIP CONF PROC, V483, P207

[2] Inelastic-neutron-scattering study of antiferromagnetic fluctuations in YBa2Cu3O6.97 [J].

Bourges, P ;

Regnault, LP ;

Sidis, Y ;

Vettier, C .

PHYSICAL REVIEW B, 1996, 53 (02) :876-885

[3] Slave boson approach to neutron scattering in YBa2Cu3O6+y superconductors [J].

Brinckmann, J ;

Lee, PA .

PHYSICAL REVIEW LETTERS, 1999, 82 (14) :2915-2918

[4]

BULUT N, CONDMAT9909437

[5]

BULUT N, CONDMAT9908266

[6] π excitation of the t-J model [J].

Demler, E ;

Kohno, H ;

Zhang, SC .

PHYSICAL REVIEW B, 1998, 58 (09) :5719-5730

[7] Polarized and unpolarized neutron-scattering study of the dynamical spin susceptibility of YBa2Cu3O7 [J].

Fong, HF ;

Keimer, B ;

Reznik, D ;

Milius, DL ;

Aksay, IA .

PHYSICAL REVIEW B, 1996, 54 (09) :6708-6720

[8] Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+δ [J].

Fong, HF ;

Bourges, P ;

Sidis, Y ;

Regnault, LP ;

Ivanov, A ;

Gu, GD ;

Koshizuka, N ;

Keimer, B .

NATURE, 1999, 398 (6728) :588-591

[9] PHONON AND MAGNETIC NEUTRON-SCATTERING AT 41 MEV IN YBA2CU3O7 [J].

FONG, HF ;

KEIMER, B ;

ANDERSON, PW ;

REZNIK, D ;

DOGAN, F ;

AKSAY, IA .

PHYSICAL REVIEW LETTERS, 1995, 75 (02) :316-319

[10] Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7 [J].

Fong, HF ;

Bourges, P ;

Sidis, Y ;

Regnault, LP ;

Bossy, J ;

Ivanov, A ;

Milius, DL ;

Aksay, IA ;

Keimer, B .

PHYSICAL REVIEW LETTERS, 1999, 82 (09) :1939-1942

← 1 2 3 →