High-field electron spin resonance spectroscopy study of GdFeAsO1-xFx superconductors

被引：19

作者：

Alfonsov, A. ^{[1
]}

Muranyi, F. ^{[2
]}

Kataev, V. ^{[1
]}

Lang, G. ^{[1
]}

Leps, N. ^{[1
]}

Wang, L. ^{[1
]}

Klingeler, R. ^{[3
]}

Kondrat, A. ^{[1
]}

Hess, C. ^{[1
]}

Wurmehl, S. ^{[1
]}

Koehler, A. ^{[1
]}

Behr, G. ^{[1
]}

Hampel, S. ^{[1
]}

Deutschmann, M. ^{[1
]}

Katrych, S. ^{[4
]}

Zhigadlo, N. D. ^{[4
]}

Bukowski, Z. ^{[4
]}

Karpinski, J. ^{[4
]}

Buechner, B. ^{[1
]}

机构：

[1] IFW Dresden, Inst Solid State Res, D-01069 Dresden, Germany

[2] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[3] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany

[4] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 09期

基金：

瑞士国家科学基金会;

关键词：

PHASE-DIAGRAM; MAGNETIC ORDER; COEXISTENCE;

D O I：

10.1103/PhysRevB.83.094526

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a detailed investigation ofGdO(1-x) FxFeAs (x = 0, 0.07, and 0.14) samples by means of high-field and high-frequency electron spin resonance (HF-ESR) together with measurements of thermodynamic and transport properties. The parent GdOFeAs compound exhibits Fe long-range magnetic order below 128 K, whereas both doped samples do not show such order and are superconducting with T-c = 20 K (x = 0.07) and T-c = 45 K (x = 0.14). The Gd3+ HF-ESR reveals an appreciable exchange coupling between Gd and Fe moments, through which the static magnetic order is clearly seen in the parent compound. Owing to this coupling, HF-ESR can probe sensitively the evolution of the magnetism in the FeAs planes upon F doping. It is found that in both superconducting samples, where the Fe long-range order is absent, there are short-range, static on the ESR time scale magnetic correlations between Fe spins. Their occurrence on a large doping scale may be indicative of the ground states' coexistence.

引用

页数：10

共 50 条

[1] Confinement effects in ionomers:: a high-field pulsed electron spin resonance spectroscopy study
Leporini, D
Schädler, V
Wiesner, U
Spiess, HW
Jeschke, G
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 2002, 307 : 510 - 516
[2] HIGH-FIELD ELECTRON-SPIN-RESONANCE
BRUNEL, LC
BARRA, AL
MARTINEZ, G
[J]. PHYSICA B, 1995, 204 (1-4): : 298 - 302
[3] Probing porous polymer resins by high-field electron spin resonance spectroscopy
Leporini, D
Zhu, XX
Krause, M
Jeschke, G
Spiess, HW
[J]. MACROMOLECULES, 2002, 35 (10) : 3977 - 3983
[4] High-field electron spin resonance of spin labels in membranes
Marsh, D
Kurad, D
Livshits, VA
[J]. CHEMISTRY AND PHYSICS OF LIPIDS, 2002, 116 (1-2) : 93 - 114
[5] Spin Transport in High-Field Superconductors
Beckmann, Detlef
[J]. ANNALEN DER PHYSIK, 2024, 536 (07)
[6] High-field electron spin resonance of Cu1-xZnxGeO3
Hassan, AK
Pardi, LA
Martins, GB
Cao, G
Brunel, LC
[J]. PHYSICAL REVIEW LETTERS, 1998, 80 (09) : 1984 - 1987
[7] High-field electron spin resonance of Cu1-xZnxGeO3
[J]. Phys Rev Lett, 9 (1984):
[8] Electron spin resonance in high-field critical phase of gapped spin chains
Kolezhuk, AK
Mikeska, HJ
[J]. PHYSICAL REVIEW B, 2002, 65 (01) : 144131 - 144138
[9] NMR-correlated high-field electron paramagnetic resonance spectroscopy
Jeschke, G
Spiess, HW
[J]. CHEMICAL PHYSICS LETTERS, 1998, 293 (1-2) : 9 - 18
[10] SPIN INTERACTIONS IN HIGH-FIELD SUPERCONDUCTORS OF V AND AL
SEGUCHI, Y
TSUBOI, T
SUZUKI, T
[J]. PHYSICA B, 1990, 165 : 1597 - 1598

← 1 2 3 4 5 →