In-plane charge dynamics in La1.6-xNd0.4SrxCuO4:: Absence of a charge gap in the spin/charge ordered state

被引：34

作者：

Tajima, S ^{[1
]}

Wang, NL

Ichikawa, N

Eisaki, H

Uchida, S

Kitano, H

Hanaguri, T

Maeda, A

机构：

[1] ISTEC, Superconduct Res Lab, Tokyo 1350062, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[3] Univ Tokyo, Dept Basic Sci, Tokyo 1530041, Japan

来源：

EUROPHYSICS LETTERS | 1999年 / 47卷 / 06期

关键词：

D O I：

10.1209/epl/i1999-00449-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the optical conductivity of the spin/charge "stripe" order phase in La-1.6-xNd0.4SrxCuO4 in the microwave and the infrared regions. The in-plane conductivity is appreciably suppressed with respect to the spectrum for the Nd-free crystal over a wide frequency range of up to 8000 cm(-1). The suppression persists even at room temperature, indicating a strong fluctuation of this order. Nevertheless, the spectrum is basically metallic without showing a gap associated with charge order. It was found that the magnetic penetration depth is extremely long in the superconducting state which coexists with the static spin/charge order.

引用

页码：715 / 721

页数：7

共 24 条

[1] MAGNETIC PENETRATION DEPTH AND FLUX-PINNING EFFECTS IN HIGH-TC SUPERCONDUCTOR LA1.85SR0.15CUO4 [J].

AEPPLI, G ;

CAVA, RJ ;

ANSALDO, EJ ;

BREWER, JH ;

KREITZMAN, SR ;

LUKE, GM ;

NOAKES, DR ;

KIEFL, RF .

PHYSICAL REVIEW B, 1987, 35 (13) :7129-7132

[2] DISORDER AND SUPERCONDUCTING-STATE CONDUCTIVITY OF SINGLE-CRYSTALS OF YBA2CU3O6.95 [J].

BASOV, DN ;

PUCHKOV, AV ;

HUGHES, RA ;

STRACH, T ;

PRESTON, J ;

TIMUSK, T ;

BONN, DA ;

LIANG, R ;

HARDY, WN .

PHYSICAL REVIEW B, 1994, 49 (17) :12165-12169

[3] Infrared probe of transition from superconductor to nonmetal in YBa2(Cu1-xZnx)4O8 [J].

Basov, DN ;

Dabrowski, B ;

Timusk, T .

PHYSICAL REVIEW LETTERS, 1998, 81 (10) :2132-2135

[4] CHARGE MODULATIONS IN LA2-XSRXNIO4+Y - ORDERING OF POLARONS [J].

CHEN, CH ;

CHEONG, SW ;

COOPER, AS .

PHYSICAL REVIEW LETTERS, 1993, 71 (15) :2461-2464

[5] INCOMMENSURATE MAGNETIC FLUCTUATIONS IN LA2-XSRXCUO4 [J].

CHEONG, SW ;

AEPPLI, G ;

MASON, TE ;

MOOK, H ;

HAYDEN, SM ;

CANFIELD, PC ;

FISK, Z ;

CLAUSEN, KN ;

MARTINEZ, JL .

PHYSICAL REVIEW LETTERS, 1991, 67 (13) :1791-1794

[6] OPTICAL STUDIES OF THE A-AXIS, B-AXIS, AND C-AXIS CHARGE DYNAMICS IN YBA2CU3O6+X [J].

COOPER, SL ;

REZNIK, D ;

KOTZ, A ;

KARLOW, MA ;

LIU, R ;

KLEIN, MV ;

LEE, WC ;

GIAPINTZAKIS, J ;

GINSBERG, DM ;

VEAL, BW ;

PAULIKAS, AP .

PHYSICAL REVIEW B, 1993, 47 (13) :8233-8248

[7] Incommensurate magnetic fluctuations in YBa2Cu3O6.6 [J].

Dai, PC ;

Mook, HA ;

Dogan, F .

PHYSICAL REVIEW LETTERS, 1998, 80 (08) :1738-1741

[8] Optical spectroscopy of the charge-ordering transition in La1.67Sr0.33NiO4 [J].

Katsufuji, T ;

Tanabe, T ;

Ishikawa, T ;

Fukuda, Y ;

Arima, T ;

Tokura, Y .

PHYSICAL REVIEW B, 1996, 54 (20) :14230-14233

[9] Electronic liquid-crystal phases of a doped Mott insulator [J].

Kivelson, SA ;

Fradkin, E ;

Emery, VJ .

NATURE, 1998, 393 (6685) :550-553

[10]

MOOK HA, 9811100 COND MAT

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