Published September 2015 | Version v1
Journal article Metadata-only

Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer

Creators

  • 1. Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan (China)
  • 2. Deparment of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
  • 3. LSPM (CNRS-UPR 3407), Université Paris 13, Sorbonne Paris Cité, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse (France)

Description

La0.7Sr0.3MnO3(LSMO) and Pt capped La0.7Sr0.3MnO3 20 nm thick films have been grown on SrTiO3 substrates by pulsed laser deposition. Microstrip line ferromagnetic resonance (MS-FMR) technique is then used to investigate their magnetic dynamic properties and to particularly measure the damping constant based on the frequency dependence of microwave absorption linewidth. The results show that the effective damping constant of LSMO(20nm)/Pt(5.5nm) is three times larger than that of LSMO(20nm) and the films present weak in-plane uniaxial anistropy. The enhancement of the magnetic damping constant due to the capping of Pt is the manifestaction of the generation of spin current in Pt layer. Furthermore, the spin current induces an inverse spin Hall effect (ISHE) in LSMO(20nm)/Pt(5.5nm) system, measured using the FMR in cavity with 9.8 GHz excitation frequency. The linear dependence of ISHE on microwave power validates the mechenism of spin pumping in this bilayer system

Additional details

Identifiers

DOI
10.1063/1.4931383;

Publishing Information

Journal Title
AIP Advances
Journal Volume
5
Journal Issue
9
Journal Page Range
p. 097148-097148.7
ISSN
2158-3226
CODEN
AAIDBI

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47062492
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION; ENERGY BEAM DEPOSITION; EXCITATION; FERROMAGNETIC RESONANCE; FILMS; FREQUENCY DEPENDENCE; GHZ RANGE; HALL EFFECT; LANTHANUM COMPOUNDS; LASER RADIATION; LAYERS; MANGANATES; MICROWAVE RADIATION; PLATINUM; PULSED IRRADIATION; SPIN; STRONTIUM TITANATES; SUBSTRATES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANGULAR MOMENTUM; DEPOSITION; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY-LEVEL TRANSITIONS; FREQUENCY RANGE; IRRADIATION; MAGNETIC RESONANCE; MANGANESE COMPOUNDS; METALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PLATINUM METALS; RADIATIONS; RARE EARTH COMPOUNDS; RESONANCE; SORPTION; STRONTIUM COMPOUNDS; SURFACE COATING; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
(c) 2015 Author(s)