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We have used a MHz lock-in x-ray spectro-microscopy technique to directly detect changes of magnetic moments in Cu due to spin injection from an adjacent Co layer. The elemental and chemical specificity of x-rays allows us to distinguish…

Materials Science · Physics 2015-09-02 R. Kukreja , S. Bonetti , Z. Chen , D. Backes , Y. Acremann , J. Katine , A. D. Kent , H. A. Durr , H. Ohldag , J. Stohr

Emergent ferromagnetism on the surface of recent two-dimensional (2D) MXene is investigated by X-ray magnetic circular dichroism (XMCD) and angle-dependent hard X-ray photoemission spectroscopy (HAXPES). Focusing on the Cr2N as one of the…

Materials Science · Physics 2025-04-16 Prabhat Kumar , Shunsuke Tsuda , Koichiro Yaji , Shinji Isogami

Control of magnetism by an applied electric field is a desirable technique for the functionalization of magnetic materials. Motivated by recent experiments, we study the electric field control of the interfacial magnetism of…

Materials Science · Physics 2023-08-21 Churna Bhandari , S Satpathy

We present a x-ray dichroism study of graphite surfaces that addresses the origin and magnitude of ferromagnetism in metal-free carbon. We find that, in addition to carbon $\pi$ states, also hydrogen-mediated electronic states exhibit a net…

Materials Science · Physics 2015-05-13 H. Ohldag , P. Esquinazi , E. Arenholz , D. Spemann , M. Rothermel , A. Setzer , T. Butz

Employing the state-of-the-art Density Functional Theory with both GGA and hybrid HSE06 functional along with the incorporation of spin-orbit coupling, we have engineered stable room temperature ferromagnetism in non-magnetic LaH$_3$…

Materials Science · Physics 2023-02-14 Poonam Sharma , Alok Shukla , Brahmananda Chakraborty

We consider a superconductor-ferromagnet (S/F) structure and assume that above the superconducting transition temperature $T_{c}$ the magnetic moment exists only in F. {In a simple model of the ferromagnet (the exchange field is of the…

Superconductivity · Physics 2009-11-10 F. S. Bergeret , A. F. Volkov , K. B. Efetov

Reports of emergent conductivity, superconductivity, and magnetism at oxide interfaces have helped to fuel intense interest in their rich physics and technological potential. Here we employ magnetic force microscopy to search for…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Feng Bi , Mengchen Huang , Chung-Wung Bark , Sangwoo Ryu , Chang-Beom Eom , Patrick Irvin , Jeremy Levy

We report an element-specific investigation of electronic and magnetic properties of the graphene/Ni(111) system. Using magnetic circular dichroism, the occurrence of an induced magnetic moment of the carbon atoms in the graphene layer…

Materials Science · Physics 2015-05-13 M. Weser , Y. Rehder , Yu. S. Dedkov , K. Horn , M. Sicot , M. Fonin , A. Preobtajenski , E. N. Voloshina

The electronic reconstruction at the interface between two insulating oxides can give rise to a highly-conductive interface. In analogy to this remarkable interface-induced conductivity we show how, additionally, magnetism can be induced at…

Strongly Correlated Electrons · Physics 2007-06-13 A. Brinkman , M. Huijben , M. van Zalk , J. Huijben , U. Zeitler , J. C. Maan , W. G. van der Wiel , G. Rijnders , D. H. A. Blank , H. Hilgenkamp

We performed x-ray magnetic circular dichroism (XMCD) measurements on heterostructures comprising topological insulators (TIs) of the (Bi,Sb)$_2$(Se,Te)$_3$ family and the magnetic insulator EuS. XMCD measurements allow us to investigate…

Mesoscale and Nanoscale Physics · Physics 2020-11-30 A. I. Figueroa , F. Bonell , M. G. Cuxart , M. Valvidares , P. Gargiani , G. van der Laan , A. Mugarza , S. O. Valenzuela

Altermagnetism is a newly identified phase of magnetism distinct from ferromagnetism and antiferromagnetism. RuO$_2$ has been considered a prototypical metallic altermagnet with a critical temperature higher than room temperature. Previous…

Materials Science · Physics 2025-09-17 Dai Q. Ho , D. Quang To , Ruiqi Hu , Garnett W. Bryant , Anderson Janotti

Magnetism of a very thin antiferromagnetic (AFM) surface CuO has been investigated with the partially oxidized nanocomposites of Cu-CuCl, ~ 200 nm. The samples are characterized by X-ray diffraction, X-ray photoelectron spectroscopy,…

Materials Science · Physics 2009-11-11 Qi Li , Shi-Wei Zhang , Yan Zhang , Chinping Chen

We present an x-ray magnetic dichroism (XMCD) and soft x-ray absorption spectroscopy (XAS) study to address the nature of emerging magnetic order in metallic Copper as Cobalt is added to the matrix. For this purpose line shape and energy…

Diluted magnetic semiconductors possessing intrinsic static magnetism at high temperatures represent a promising class of multifunctional materials with high application potential in spintronics and magneto-optics. In the hexagonal Fe-doped…

Strongly Correlated Electrons · Physics 2016-08-07 A. Zorko , M. Pregelj , M. Gomilšek , Z. Jagličić , D. Pajić , M. Telling , I. Arčon , I. Mikulska , M. Valant

The complex investigation of dc transport and magnetic properties of the epitaxial manganite/iridate heterostructure was carried out by mean of X-ray (XRD), dc resistance measurements, ferromagnetic resonance (FMR) and polarized neutron…

Mesoscale and Nanoscale Physics · Physics 2020-10-07 G. A. Ovsyannikov , T. A Shaikhulov , V. V. Demidov , K. L. Stankevich , Yu. Khaydukov , N. V. Andreev

Cu-doped type-I germanium clathrate can exhibit dilute magnetism, including ferromagnetism, antiferromagnetism, and metamagnetic transitions up to 90 K. 63Cu NMR measurements confirm that these transitions are due to a dilute composition of…

Materials Science · Physics 2007-05-23 Yang Li , Weiping Gou , Ji Chi , Joseph H. Ross

Magnetic semiconductors are at the core of recent spintronics research endeavors. Chemically doped II-VI diluted magnetic semiconductors, such as (Zn$_{1-x}$Cr$_{x}$)Te, provide promising platform in this quest. However, a detailed…

Materials Science · Physics 2023-03-20 J. Guo , A. Sarikhani , P. Ghosh , T. Heitmann , Y. S. Hor , D. K. Singh

Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new…

Strongly Correlated Electrons · Physics 2014-07-04 Jian-Xin Zhu , Xiao-Dong Wen , J. T. Haraldsen , Mi He , C. Panagopoulos , Elbert E. M. Chia

We have measured X-ray magnetic circular dichroism (XMCD) spectra at the Pu $M_{4,5}$ absorption edges from a newly-prepared high-quality single crystal of the heavy fermion superconductor $^{242}$PuCoGa$_{5}$, exhibiting a critical…

Strongly Correlated Electrons · Physics 2017-10-16 N. Magnani , R. Eloirdi , F. Wilhelm , E. Colineau , J. -C. Griveau , A. B. Shick , G. H. Lander , A. Rogalev , R. Caciuffo

Recent claim of discovering above-room-temperature superconductivity (Tc about 400 K) at ambient pressure in copper doped apatite $Pb_{10}\left( PO_4 \right) _6O$ has stimulated world-wide enthusiasm and impulse of motion. A lot of…

Superconductivity · Physics 2023-12-14 Yuhang Zhang , Cong Liu , Xiyu Zhu , Hai-Hu Wen
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