Fincher-Burke spin excitations and ω/T scaling in insulating La1.95Sr0.05CuO4

被引：7

作者：

Bao, Wei ^{[1
]}

Chen, Y.

Yamada, K.

Savici, A. T.

Russo, P. L.

Lorenzo, J. E.

Chung, J. -H.

机构：

[1] Los Alamos Natl lab, Los Alamos, NM 87545 USA

[2] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[5] Brookhaven Natl Lab, Upton, NY 11973 USA

[6] CNRS, Inst Neel, F-38043 Grenoble, France

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.76.180406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Insulating La1.95Sr0.05CuO4 shares with superconducting cuprates the same Fincher-Burke spin excitations, which usually are observed in itinerant antiferromagnets. The local spectral function satisfies omega/T scaling above similar to 16 K for this incommensurate insulating cuprate, together with previous results in commensurate insulating and incommensurate superconducting cuprates, further supporting the general prediction for square-lattice quantum spin S=1/2 systems. The width of incommensurate peaks in La1.95Sr0.05CuO4 scales to a similar finite value as at optimal doping, strongly suggesting that they are similarly distant from a quantum critical point. They might both be limited to a finite correlation length by partial spin-glass freezing.

引用

页数：4

共 32 条

[11] Dispersive excitations in the high-temperature superconductor La2-xSrxCuO4 -: art. no. 147002 [J].

Christensen, NB ;

McMorrow, DF ;

Ronnow, HM ;

Lake, B ;

Hayden, SM ;

Aeppli, G ;

Perring, TG ;

Mangkorntong, M ;

Nohara, M ;

Takagi, H .

PHYSICAL REVIEW LETTERS, 2004, 93 (14) :147002-1

[12] MAGNETIC EXCITATIONS IN CHROMIUM [J].

FINCHER, CR ;

SHIRANE, G ;

WERNER, SA .

PHYSICAL REVIEW B, 1981, 24 (03) :1312-1322

[13] Static magnetic correlations near the insulating-superconducting phase boundary in La2-xSrxCuO4 -: art. no. 064505 [J].

Fujita, M ;

Yamada, K ;

Hiraka, H ;

Gehring, PM ;

Lee, SH ;

Wakimoto, S ;

Shirane, G .

PHYSICAL REVIEW B, 2002, 65 (06) :1-7

[14] The structure of the high-energy spin excitations in a high-transition-temperature superconductor [J].

Hayden, SM ;

Mook, HA ;

Dai, PC ;

Perring, TG ;

Dogan, F .

NATURE, 2004, 429 (6991) :531-534

[15] HIGH-ENERGY SPIN-WAVES IN LA2CUO4 [J].

HAYDEN, SM ;

AEPPLI, G ;

OSBORN, R ;

TAYLOR, AD ;

PERRING, TG ;

CHEONG, SW ;

FISK, Z .

PHYSICAL REVIEW LETTERS, 1991, 67 (25) :3622-3625

[16] Characterization of low-energy magnetic excitations in chromium -: art. no. 144413 [J].

Hiraka, H ;

Böni, P ;

Yamada, K ;

Park, S ;

Lee, SH ;

Shirane, G .

PHYSICAL REVIEW B, 2004, 70 (14) :144413-1

[17] MAGNETIC EXCITATIONS IN PURE, LIGHTLY DOPED, AND WEAKLY METALLIC LA2CUO4 [J].

KEIMER, B ;

BELK, N ;

BIRGENEAU, RJ ;

CASSANHO, A ;

CHEN, CY ;

GREVEN, M ;

KASTNER, MA ;

AHARONY, A ;

ENDOH, Y ;

ERWIN, RW ;

SHIRANE, G .

PHYSICAL REVIEW B, 1992, 46 (21) :14034-14053

[18] Two energy scales and two distinct quasiparticle dynamics in the superconducting state of underdoped cuprates [J].

Le Tacon, M. ;

Sacuto, A. ;

Georges, A. ;

Kotliar, G. ;

Gallais, Y. ;

Colson, D. ;

Forget, A. .

NATURE PHYSICS, 2006, 2 (08) :537-543

[19] UNIVERSAL PROPERTIES OF THE NORMAL-STATE OF CUPRATE SUPERCONDUCTING MATERIALS [J].

LIU, YL ;

SU, ZB .

PHYSICS LETTERS A, 1995, 200 (05) :393-398

[20] DYNAMIC SPIN PROPERTIES OF LA1.98SR0.02CUO4 [J].

MATSUDA, M ;

BIRGENEAU, RJ ;

ENDOH, Y ;

HIDAKA, Y ;

KASTNER, MA ;

NAKAJIMA, K ;

SHIRANE, G ;

THURSTON, TR ;

YAMADA, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (05) :1702-1709

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