EPR STUDY OF THE DYNAMIC SPIN SUSCEPTIBILITY IN HEAVILY-DOPED YBA2CU3O6+DELTA

被引：26

作者：

SICHELSCHMIDT, J ^{[1
]}

ELSCHNER, B ^{[1
]}

LOIDL, A ^{[1
]}

KOCHELAEV, BI ^{[1
]}

机构：

[1] KAZAN VI LENIN STATE UNIV,DEPT PHYS,KAZAN 420008,RUSSIA

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.51.9199

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron paramagnetic resonance (EPR) studies on single crystals of YBa2Cu3O6+δ were performed in a wide range of oxygen concentration δ. Intrinsic EPR signals due to the existence of paramagnetic chain fragments could be detected only in a limited δ range (0. 7≤δ≤0.9). The linewidth of the signal passes through a minimum near 105 K and broadens exponentially for further decreasing temperatures. This behavior manifests the opening of a pseudogap in the dynamic spin susceptibility of the CuO2 planes. At higher temperatures the linewidth follows a Korringa behavior. The g values reveal axial symmetry with respect to the c axis [g=2.28(1); g=2.03(1)] and are almost temperature independent. We compare our results with inelastic neutron scattering and nuclear-magnetic-resonance data. © 1995 The American Physical Society.

引用

页码：9199 / 9207

页数：9

共 37 条

[21] SPIN GAPS AND SPIN DYNAMICS IN LA2-XSRXCUO4 AND YBA2CU3O7-DELTA [J].

MILLIS, AJ ;

MONIEN, H .

PHYSICAL REVIEW LETTERS, 1993, 70 (18) :2810-2813

[22] THEORY OF RESOLVED AND UNRESOLVED CRYSTAL-FIELD STRUCTURE OF ESR-SPECTRA IN DILUTE MAGNETIC ALLOYS [J].

PLEFKA, T .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1973, 55 (01) :129-141

[23]

PLEFKA T, 1972, THESIS TH DARMSTADT

[24] INVESTIGATION OF THE SPIN DYNAMICS IN YBA2CU3O6+X BY INELASTIC NEUTRON-SCATTERING [J].

ROSSATMIGNOD, J ;

REGNAULT, LP ;

VETTIER, C ;

BURLET, P ;

HENRY, JY ;

LAPERTOT, G .

PHYSICA B, 1991, 169 (1-4) :58-65

[25]

ROSSATMIGNOD J, 1993, SELECTED TOPICS SUPE, P265

[26] ELECTRON-SPIN-RESONANCE IN NEW HIGH-TEMPERATURE SUPERCONDUCTORS [J].

SHALTIEL, D ;

GENOSSAR, J ;

GRAYEVSKY, A ;

KALMAN, ZH ;

FISHER, B ;

KAPLAN, N .

SOLID STATE COMMUNICATIONS, 1987, 63 (11) :987-990

[27] SINGLE-CRYSTAL ESR STUDIES ON TETRAGONAL YBA2CU3O6+X [J].

SHALTIEL, D ;

BILL, H ;

FISCHER, P ;

FRANCOIS, M ;

HAGEMANN, H ;

PETER, M ;

SEKHAR, YR ;

SADOWSKI, W ;

SCHEEL, HJ ;

TRISCONE, G ;

WALKER, E ;

YVON, K .

PHYSICA C, 1989, 158 (03) :424-432

[28] CU-EPR IN YBA2CU3O6+DELTA SINGLE-CRYSTALS [J].

SICHELSCHMIDT, J ;

ELSCHNER, B ;

LOIDL, A ;

FISCHER, K .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1994, 93 (04) :407-409

[29] EPR OF COMPLEX PARAMAGNETIC CENTER IN YBA2CU3O7-DELTA INDUCED AND SUPPRESSED BY MECHANICAL PROCESSING [J].

STANKOWSKI, J ;

HILCZER, W ;

BASZYNSKI, J ;

CZYZAK, B ;

SZCZEPANSKA, L .

SOLID STATE COMMUNICATIONS, 1991, 77 (02) :125-128

[30] TEMPERATURE-DEPENDENCE OF THE DYNAMIC SUSCEPTIBILITY CHI''(OMEGA) IN SUPERCONDUCTING YBA2CU3O6.6(TC=53-K) [J].

STERNLIEB, BJ ;

SHIRANE, G ;

TRANQUADA, JM ;

SATO, M ;

SHAMOTO, S .

PHYSICAL REVIEW B, 1993, 47 (09) :5320-5324

← 1 2 3 4 →