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The spin ordering in RuO2 remains a highly debated topic, owing to its elusive nature, with reports ranging from a nonmagnetic ground state to signatures of unconventional magnetic order. Here we provide the first unambiguous, and direct…

To explore the formation of noncollinear magnetic configurations in materials with strongly correlated electrons, we derive a noncollinear LSDA+$U$ model involving only one parameter $U$, as opposed to the difference between the Hubbard and…

Strongly Correlated Electrons · Physics 2019-08-21 S. L. Dudarev , P. Liu , D. A. Andersson , C. R. Stanek , T. Ozaki , C. Franchini

The compound Ba3HoRu2O9 magnetically orders at 50 K (TN1) followed by another complex magnetic ordering at 10.2 K (TN2). The 2nd magnetic phase transition was characterized by the co-existence of two competing magnetic ground states…

Strongly Correlated Electrons · Physics 2024-06-18 E. Kushwaha , G. Roy , M. Kumar , A. M. dos Santos , S. Ghosh , D. T. Adroja , V. Caignaert , O. Perez , A. Pautrat , T. Basu

We theoretically study the coupling of electric charge and spin polarization in an equilibrium and nonequilibrium electric transport across a two dimensional Josephson configuration comprised of disordered surface channels of a three…

Strongly Correlated Electrons · Physics 2016-10-12 I. V. Bobkova , A. M. Bobkov , Alexander A. Zyuzin , Mohammad Alidoust

Non-relativistic momentum-dependent spin splitting, as observed in collinear altermagnets and non-collinear $p$-wave magnets, provides exciting avenues for controlling spin dynamics. Here, we reveal a distinct form of non-relativistic…

Superconductivity · Physics 2026-05-18 Ping Li , G. A. Bobkov , I. V. Bobkova , Tao Yu

The trigonal compound EuSn2As2 was recently discovered to host Dirac surface states within the bulk band gap and orders antiferromagnetically below the Neel temperature TN = 24 K. Here the magnetic ground state of single-crystal EuSn2As2…

Strongly Correlated Electrons · Physics 2022-04-05 Santanu Pakhira , M. A. Tanatar , Thomas Heitmann , David Vaknin , D. C. Johnston

The Fe1+xTe phase diagram consists of two distinct magnetic structures with collinear order present at low interstitial iron concentrations and a helical phase at large values of x with these phases separated by a Lifshitz point. We use…

Strongly Correlated Electrons · Physics 2017-11-21 C. Stock , E. E. Rodriguez , P. Bourges , R. A. Ewings , H. Cao , S. Chi , J. A. Rodriguez-Rivera , M. A. Green

Recently the evidence of the helical magnetic structure modulated along $c$-axis with the period of four lattice parameters was obtained in easy $ab$ plane ferromagnetic superconductor EuRbFe$_4$As$_4$ [K. Iida et al., Phys. Rev. B 100,…

Superconductivity · Physics 2019-10-01 Zh. Devizorova , A. Buzdin

SrCo2As2 is a peculiar itinerant magnetic system that does not order magnetically, but inelastic neutron scattering experiments observe the same stripe-type antiferromagnetic (AF) fluctuations found in many of the Fe-based superconductors…

Strongly Correlated Electrons · Physics 2019-11-06 J. M. Wilde , A. Kreyssig , D. Vaknin , N. S. Sangeetha , Bing Li , W. Tian , P. P. Orth , D. C. Johnston , B. G. Ueland , R. J. McQueeney

The magnetotransport of two dimensional holes in a GaAs/AlGaAs heterostructure is studied experimentally and theoretically. Spin-orbit splitting of the heavy hole band is manifested at high carrier densities in two Shubnikov-de Haas…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Yuval Yaish , Oleg Prus , Evgeny Buchstab , Gidi Ben Yoseph , Uri Sivan , Iddo Ussishkin , Ady Stern

A spin model of quasi-one dimensional LiCu$_{2}$O$_{2}$ compound with ground state of ellipsoidal helical structure in which the helical axis is along the diagonal of CuO$_{4}$ squares has been adopted. By taking into account the interchain…

Materials Science · Physics 2015-06-18 Yan Qi , An Du

We show that the parallel magnetic field-induced increase in the critical electron density for the Anderson transition in a strongly interacting two-dimensional electron system is caused by the effects of exchange and correlations. If the…

Strongly Correlated Electrons · Physics 2017-08-21 V. T. Dolgopolov , A. A. Shashkin , S. V. Kravchenko

The layered compound EuFe2As2 is an interesting model system to investigate the effects of well defined local Eu2+ 4f states on the itinerant electronic and magnetic properties of the FeAs layers. To address this subject, we investigated…

Strongly Correlated Electrons · Physics 2015-06-04 F. A. Garcia , A. Leithe-Jasper , W. Schnelle , M. Nicklas , H. Rosner , J. Sichelschmidt

Atomically thin two dimensional magnets have given rise to emergent phenomena due to magnetic exchange and spin-orbit coupling showing a great promise for realizing ultrathin device structures. In this paper, we critically examine the…

Mesoscale and Nanoscale Physics · Physics 2021-12-22 Duo Wang , Xin Chen , Biplab Sanyal

Magnetic resonant X ray scattering experiments have been performed on a single crystal of EuFe_2As_2 at the Eu L_3 absorption edge. This has permitted us to determine for the first time the orientation of Eu magnetic moments in the…

Using spin dependent specular and off-specular polarized neutron reflectivity (PNR), we report the observation of a twisted helical magnetic structure with planar 2{\pi} domain wall (DW) and highly correlated magnetic domains in a Gd/Co…

Mesoscale and Nanoscale Physics · Physics 2019-10-16 Surendra Singh , M. A. Basha , C. L. Prajapat , Harsh Bhatt , Yogesh Kumar , M. Gupta , C. J. Kinane , J. Cooper , M. R. Gonal , S. Langridge , S. Basu

Neutron scattering studies on powder and single crystals have provided new evidences for unconventional magnetism in Cu2Te2O5Cl2. The compound is built from tetrahedral clusters of S=1/2 Cu2+ spins located on a tetragonal lattice. Magnetic…

Strongly Correlated Electrons · Physics 2009-11-11 O. Zaharko , H. M. Ronnow , A. Daoud-Aladine , S. Streule , F. Juranyi , J. Mesot , H. Berger , P. J. Brown

The properties of S = 1 anisotropic Heisenberg models with nondiagonal exchange between axial and planar spin components are investigated using Monte Carlo techniques. The quantum nature is taken into account in a semi-classical…

Condensed Matter · Physics 2009-10-31 M. Pleimling

We study Berry curvature driven and Zeeman magnetic field dependent electric current responses of two-dimensional electron system with spin-orbit coupling. New non-dissipative component of the electric current occurring in the applied…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Vladimir A. Zyuzin

We consider the role of magnetic fields on the broken inversion superconductor CePt_3Si. We show that upper critical field for a field along the c-axis exhibits a much weaker paramagnetic effect than for a field applied perpendicular to the…

Superconductivity · Physics 2009-11-10 R. P. Kaur , D. F. Agterberg , M. Sigrist