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Changes in the spin configuration of atomically-thin, magnetic van-der-Waals multilayers can cause drastic modifications in their opto-electronic properties. Conversely, the opto-electronic response of these systems provides information…

Mesoscale and Nanoscale Physics · Physics 2020-05-28 Zhe Wang , Marco Gibertini , Dumitru Dumcenco , Takashi Taniguchi , Kenji Watanabe , Enrico Giannini , Alberto F. Morpurgo

Triple-layered ruthenate Sr$_4$Ru$_3$O$_{10}$ shows a first-order itinerant metamagnetic transition for in-plane magnetic fields. Our experiments revealed rather surprising behavior in the low-temperature transport properties near this…

Strongly Correlated Electrons · Physics 2007-05-23 Zhiqiang Mao , Meng Zhou , Joe Hooper , Vladimir Golub , Charles J. O'Connor

Low-temperature (22~K) irradiation with 2.5~MeV electrons was used to study the competition between stripe ${\rm C_2}$ and tetragonal ${\rm C_4}$ antiferromagnetic phases which exist in a narrow doping range around $x=$0.25 in hole-doped…

Layered organic conductors (BEDO-TTF)_2ReO_4*H_2O (metal) and (BEDT-TTF)_xDy(NO_3)_z (paramagnetic insulator) are studied by CW-EPR and SQUID methods. A correlation in resonance and transport properties of both compounds is attributed to a…

Materials Science · Physics 2007-05-23 Yu. N. Shvachko , D. V. Starichenko , A. V. Korolyov , N. D. Kushch , E. B. Yagubskii

The electronic structure of epitaxial films on LaCoO3(LCO) has been studied within first principle electronic structure calculations. A spin state transition is found to take place as a function of lattice strain which freezes in the…

Strongly Correlated Electrons · Physics 2009-01-05 Kapil Gupta , Priya Mahadevan

It was discovered in La1-xSrxMnO3(x~1/8) that a field induced phase transition occurs from a ferromagnetic metal(FM) phase to a ferromagnetic insulator (FI) phase. The magnetization shows a sharp jump at the transition field accompanying…

Strongly Correlated Electrons · Physics 2016-08-31 H. Nojiri , K. Kaneko , M. Motokawa , K. Hirota , K. Takahashi , Y. Endoh

Hexagonal LuFe2O4 is a promising charge-order (CO) driven multiferroic material with high charge and spin ordering temperatures. The coexisting charge and spin orders on Fe3+/Fe2+ sites result in novel magnetoelectric behaviors, but the…

Low-dimensional copper oxide lattices naturally manifest electronic states with strong short range quantum entanglement, which are known to lead to remarkable emergent material properties. However the nanometer scale many-body wavefunction…

Topological aspects in altermagnets have come into focus recently, and tuning the antiferromagnetic (AFM) state into an altermagnetic phase remains an active frontier. We realize both within a rutile superlattice here in this paper. With…

Materials Science · Physics 2025-09-29 Wanfei Shan , Qun Yang , Prineha Narang

Cs2CoBr4 is a triangular-lattice antiferromagnet which can be viewed as weakly interacting spin chains due to spatially anisotropic frustrating exchange couplings. The spin-orbit interaction in Co(2+) spin-3/2 ions leads to a strong…

Strongly Correlated Electrons · Physics 2023-09-06 T. A. Soldatov , A. I. Smirnov , A. V. Syromyatnikov

We study long wavelength magnetic excitations in lightly doped La_{2-x}Sr_{x}CuO_{4} (x < 0.03) detwinned crystals. The lowest energy magnetic anisotropy induced gap can be understood in terms of the antisymmetric spin interaction inside…

Strongly Correlated Electrons · Physics 2009-11-10 A. Gozar , B. S. Dennis , G. Blumberg , Seiki Komiya , Yoichi Ando

We performed inelastic neutron scattering (INS) experiments to measure spin dynamics on a polycrystalline sample of a spin tube candidate CsCrF$_{4}$. The compound exhibits a successive phase transition from a paramagnetic phase through an…

Other Condensed Matter · Physics 2023-05-17 Hodaka Kikuchi , Shinichiro Asai , Hirotaka Manaka , Masato Hagihala , Shinichi Itoh , Takatsugu Masuda

Interfacial engineering enables various emergent effects such as spin reorientations and transport anisotropy. Noncollinear spin textures are essential for realizing many emergent quantum transport phenomena. However, driving such spin…

Changing the interlayer exchange coupling between magnetic layers in-situ is a key issue of spintronics, as it allows for the optimization of properties that are desirable for applications, including magnetic sensing and memory. In this…

A key unexplained feature of cuprate superconductors is the upturn in their normal state electrical resistivity $\rho(T)$ seen at low temperature inside the pseudogap phase. We examined this issue via measurements of the thermal…

It is shown, that the monotonic part of interlayer electronic conductivity strongly decreases in high magnetic field perpendicular to the conducting layers. We consider only the coherent interlayer tunnelling, and the obtained result…

Mesoscale and Nanoscale Physics · Physics 2011-11-11 P. D. Grigoriev

We theoretically study the effect of low-frequency light pulses in resonance with phonons in the topological and magnetically ordered two septuple-layer (2-SL) MnBi2Te4 (MBT) and MnSb2Te4 (MST). These materials share symmetry properties and…

Mesoscale and Nanoscale Physics · Physics 2022-05-12 Martin Rodriguez-Vega , Ze-Xun Lin , A. Leonardo , A. Ernst , M. G. Vergniory , Gregory A. Fiete

We show, by means of low-energy muon spin rotation measurements, that few-unit-cells thick La(2)CuO(4) layers synthesized digitally by molecular beam epitaxy synthesis are antiferromagnetically ordered. Below a thickness of about 5 CuO(2)…

Strongly Correlated Electrons · Physics 2011-10-26 A. Suter , E. Morenzoni , T. Prokscha , B. M. Wojek , H. Luetkens , G. Nieuwenhuys , A. Gozar , G. Logvenov , I. Bozovic

We report on the non-linear in-plane electrical transport in coherently grown [La0.7Sr0.3MnO3/SrTiO3] multilayers with ultrathin (< 3 nm) single layers. Current-induced switching of the conductance, with low conductance at larger currents,…

Strongly Correlated Electrons · Physics 2009-09-25 K. Doerr , K. -H. Mueller , T. Walter , M. Sahana , D. Eckert , K. Nenkov , L. Schultz , K. Brand , M. Lehmann

Symmetric anisotropic interaction can be ferromagnetic and antiferromagnetic at the same time but for different crystallographic axes. We show that inducing competition of anisotropic interactions of orthogonal irreducible representations…

Strongly Correlated Electrons · Physics 2022-07-11 S. Pandey , H. Zhang , J. Yang , A. F. May , J. Sanchez , Z. Liu , J. -H. Chu , J. W. Kim , P. J. Ryan , H. D. Zhou , J. Liu
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