Static Magnetic Order and Superfluid Density of RFeAs(O,F) (R=La,Nd,Ce) and LaFePO Studied by Muon Spin Relaxation: Unusual Similarities with the Behavior of Cuprate Superconductors

被引：60

作者：

Carlo, J. P. ^{[1
]}

Uemura, Y. J. ^{[1
]}

Goko, T. ^{[1
,2
,3
]}

MacDougall, G. J. ^{[2
]}

Rodriguez, J. A. ^{[2
]}

Yu, W. ^{[2
]}

Luke, G. M. ^{[2
]}

Dai, Pengcheng ^{[4
]}

Shannon, N. ^{[7
]}

Miyasaka, S. ^{[5
]}

Suzuki, S. ^{[5
]}

Tajima, S. ^{[5
]}

Chen, G. F. ^{[6
]}

Hu, W. Z. ^{[6
]}

Luo, J. L. ^{[6
]}

Wang, N. L. ^{[6
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[3] TRIUMF, Vancouver, BC V6T 2A3, Canada

[4] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[5] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[6] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

[7] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

T-C SUPERCONDUCTORS; PENETRATION-DEPTH; PHASE; ANTIFERROMAGNETISM; ROTATION; MODE; SR;

D O I：

10.1103/PhysRevLett.102.087001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Muon spin relaxation measurements in iron-oxypnictide systems have revealed: (1) commensurate long-range order in undoped LaFeAsO; (2) a Bessel function line shape in LaFeAs(O0.97F0.03) which indicates possible incommensurate or stripe magnetism; (3) anomalous weak magnetism existing in superconducting LaFePO, CeFeAs(O0.084F0.16), and NdFeAs(O0.88F0.12) but absent in superconducting LaFeAs(O0.92F0.08); and (4) scaling of the superfluid density with T-c in the Ce-, La-, and Nd-FeAs superconductors following a nearly linear relationship found in cuprates.

引用

页数：4

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