Universidad de Zaragoza Repository

000144880 001__ 144880
000144880 005__ 20250923084429.0
000144880 0247_ $$2doi$$a10.1103/PhysRevMaterials.8.084202
000144880 0248_ $$2sideral$$a139699
000144880 037__ $$aART-2024-139699
000144880 041__ $$aeng
000144880 100__ $$aFukushima, R.
000144880 245__ $$aDirect evidence of induced magnetic moment in Se and the role of misplaced Mn in MnBi2Se4-based intrinsic magnetic topological insulator heterostructures
000144880 260__ $$c2024
000144880 5060_ $$aAccess copy available to the general public$$fUnrestricted
000144880 5203_ $$aIntrinsic magnetic topological insulators, in which magnetism and topology are inherently combined, are excellent systems to realize exotic phenomena such as the quantum anomalous Hall effect. However, there are many reports that show that the experimental samples are not so ideal and the effect of the unintentional disorder in these systems needs to be considered carefully. In this study, we investigate the role of misplaced magnetic atoms as well as nonmagnetic elements in the intrinsic magnetic topological insulator heterostructures based on MnBi2⁢Se4 and Bi2⁢Se3. We find that Mn atoms are not only placed at the central layer of the MnBi2⁢Se4 septuple layer (SL) but also intermix with Bi (antisite Mn) as well as reside in the van der Waals (vdW) gap. Through a detailed comparison between the experimental and theoretical x-ray magnetic circular dichroism (XMCD) spectra, we find that the antisite Mn is coupled ferromagnetically, whereas the vdW Mn couple antiferromagnetically to the Mn in the central atomic plane of the SL. Furthermore, we detect a clear XMCD signal in nonmagnetic Se, providing unambiguous evidence of its magnetic interaction with Mn.
000144880 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-138210NB-I00
000144880 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000144880 590__ $$a3.4$$b2024
000144880 592__ $$a0.945$$b2024
000144880 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b224 / 460 = 0.487$$c2024$$dQ2$$eT2
000144880 593__ $$aPhysics and Astronomy (miscellaneous)$$c2024$$dQ1
000144880 593__ $$aMaterials Science (miscellaneous)$$c2024$$dQ1
000144880 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000144880 700__ $$aAntonov, V. N.
000144880 700__ $$aOtrokov, M. M.
000144880 700__ $$aSasaki, T. T.
000144880 700__ $$aAkiyama, R.
000144880 700__ $$aSumida, K.
000144880 700__ $$aIshihara, K.
000144880 700__ $$aIchinokura, S.
000144880 700__ $$aTanaka, K.
000144880 700__ $$aTakeda, Y.
000144880 700__ $$aSalinas, D. P.
000144880 700__ $$aEremeev, S. V.
000144880 700__ $$aChulkov, E. V.
000144880 700__ $$aErnst, A.
000144880 700__ $$aHirahara, T.
000144880 773__ $$g8 (2024), 084202 [9 pp.]$$pPhys. rev. mater.$$tPHYSICAL REVIEW MATERIALS$$x2475-9953
000144880 8564_ $$s12797714$$uhttps://zaguan.unizar.es/record/144880/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-08-15
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000144880 909CO $$ooai:zaguan.unizar.es:144880$$particulos$$pdriver
000144880 951__ $$a2025-09-22-14:41:48
000144880 980__ $$aARTICLE