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Related papers: Laser-induced Precession of Magnetization in GaMnA…

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The recently reported Rutherford backscattering and particle-induced X-ray emission experiments have revealed that in low-temperature MBE grown GaMnAs a significant part of the incorporated Mn atoms occupies tetrahedral interstitial sites…

Materials Science · Physics 2009-11-07 J. Blinowski , P. Kacman

Imaging the fields of magnetic materials provides crucial insight into the physical and chemical processes surrounding magnetism, and has been a key ingredient in the spectacular development of magnetic data storage. Existing approaches…

In conventional Kerr- and Faraday microscopy the sample is illuminated with plane-polarised light and a magnetic domain contrast is generated by an analyser making use of the Kerr- or Faraday rotation. In this paper we demonstrate…

Materials Science · Physics 2021-07-14 R. Schäfer , Peter M. Oppeneer , Alexey Ognev , Alexander Samardak , Ivan V. Soldatov

We exploit ferromagnetic imprinting to create complex laterally defined regions of nuclear spin polarization in lithographically patterned MnAs/GaAs epilayers grown by molecular beam epitaxy (MBE). A time-resolved Kerr rotation microscope…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. Stephens , R. K. Kawakami , J. Berezovsky , M. Hanson , D. P. Shepherd , A. C. Gossard , D. D. Awschalom

Injection of a radio frequency (RF) current was used to phase lock the SHNO to the TRSKM. The out of plane magnetization was detected by means of the polar magneto optical Kerr effect (MOKE). However, longitudinal MOKE images were dominated…

It has recently been shown that Terahertz sensors can effectively detect the spin resonances of Dirac fermions in graphene. The associated photovoltaic measurement technique allows for the investigation of the intrinsic spin-orbit coupling…

Results of magnetisation measurements on p-type zincblende-(Ga,Mn)N are reported. In addition to a small high temperature ferromagnetic signal, we detect ferromagnetic correlation among the remaining Mn ions, which we assign to the onset of…

The photoinduced magnetism in manganese-tetracyanoethylene (Mn-TCNE) molecule-based magnets is ascribed to charge-transfer excitations from manganese to TCNE. Charge-transfer energies are calculated using Density Functional Theory;…

Materials Science · Physics 2015-06-25 Serkan Erdin , Michel van Veenendaal

We show that the spins of all electrons, each confined in a quantum dot of an (In,Ga)As/GaAs dot ensemble, can be driven into a single mode of precession about a magnetic field. This regime is achieved by allowing only a single mode within…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 A. Greilich , S. Spatzek , I. A. Yugova , I. A. Akimov , D. R. Yakovlev , Al. L. Efros , D. Reuter , A. D. Wieck , M. Bayer

We carried out zero-field muon-spin-rotation (ZF-$\mu$SR) measurements in hydrostatic pressures in impurity-doped quantum spin gap system Tl(Cu$_{0.985}$Mg$_{0.015}$)Cl$_3$ to investigate microscopic magnetic properties of the…

Strongly Correlated Electrons · Physics 2015-05-18 Takao Suzuki , Isao Watanabe , Fumiko Yamada , Motoki Yamada , Yasuyuki Ishii , Takayuki Kawamata , Takayuki Goto , Hidekazu Tanaka

We have studied the field dependence of the magnetization in epilayers of the diluted magnetic semiconductor Ga(1-x)Mn(x)As for 0.0135 < x < 0.083. Measurements of the low temperature magnetization in fields up to 3 T show a significant…

Condensed Matter · Physics 2009-11-07 S. J. Potashnik , K. C. Ku , S. H. Chun , R. F. Wang , M. B. Stone , N. Samarth , P. Schiffer

We report on a monotonic reduction of Curie temperature in dilute ferromagnetic semiconductor (Ga,Mn)As upon a well controlled chemical-etching/oxidizing thinning from 15 nm down to complete removal of the ferro- magnetic response. The…

Materials Science · Physics 2012-06-29 O. Proselkov , D. Sztenkiel , W. Stefanowicz , M. Aleszkiewicz , J. Sadowski , T. Dietl , M. Sawicki

We analyze, both experimentally and numerically, the nonlinear regime of the photo-induced coherent magnetization dynamics in cobalt-doped yttrium iron garnet films. Photo-magnetic excitation with femtosecond laser pulses reveals a strongly…

Materials Science · Physics 2023-04-19 A. Frej , I. Razdolski , A. Maziewski , A. Stupakiewicz

Through time-resolved two-color magneto-optical Kerr spectroscopy we have demonstrated that photogenerated transient carriers decrease the coercivity of ferromagnetic InMnAs at low temperatures. This transient ``softening'' persists only…

Materials Science · Physics 2007-05-23 G. A. Khodaparast , J. Wang , J. Kono , A. Oiwa , H. Munekata

First principles calculations of the magnetic properties and the magneto-optical Kerr effect (MOKE) of iron thin films epitaxially grown on the [001] surface of paramagnetic metals: copper, silver, gold, palladium, and platinum are…

Condensed Matter · Physics 2016-08-31 A. Debernardi , I. Galanakis , M. Alouani , H. Dreysse

By comparing the photo-induced magnetization dynamics in simple layered systems we show how light-induced modifications of the magnetic anisotropy directly enhance the magnetization. It is observed that the spin precession in…

Measurements of frequency dependent ferromagnetic resonance (FMR) and spin pumping driven dc voltage (V_{dc}) are reported for amorphous films of Fe_{78}Ga_{13}B_{9} (FeGaB) alloy to address the phenomenon of self-induced inverse spin Hall…

Materials Science · Physics 2022-01-12 Prabesh Bajracharya , Vinay Sharma , Anthony Johnson , Ramesh C. Budhani

The magneto-optical Kerr effect (MOKE) has recently been discovered in antiferromagnetic Kagome lattice Mn3Sn. Since the compound exhibits a coplanar $120^\circ$ antiferromagnetic (AFM) order, the magnetic moments cancel each other, and the…

Strongly Correlated Electrons · Physics 2020-08-26 Yuichi Yamasaki , Hironori Nakao , Taka-hisa Arima

We study the magneto-optical Kerr effect (MOKE) of the two-dimensional heterostructure CrI3/In2Se3/CrI3 by using density functional theory calculations and symmetry analysis. The spontaneous polarization in the In2Se3 ferroelectric layer…

Materials Science · Physics 2023-05-12 Ning Ding , Kunihiro Yananose , Carlo Rizza , Feng-Ren Fan , Shuai Dong , Alessandro Stroppa

We report the observation of ferromagnetic resonance (FMR) in SrRuO3 using the time-resolved magneto-optical Kerr effect. The FMR oscillations in the time-domain appear in response to a sudden, optically induced change in the direction of…

Materials Science · Physics 2008-12-05 M. C. Langner , C. L. S. Kantner , Y. H. Chu , L. W. Martin , P. Yu , R. Ramesh , J. Orenstein
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