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Using an elastic neutron scattering technique under a pulsed magnetic field up to 30 T, we determined the magnetic structure in the half-magnetization plateau phase in the spinel CdCr$_2$O$_4$. The magnetic structure has a cubic $P4_3$32…

We have employed first-principles electronic structure calculations to examine the hypothetical (but plausible) oxide spinel, LiCr2O4 with the d^{2.5} electronic configuration. The cell (cubic) and internal (oxygen position) structural…

材料科学 · 物理学 2009-11-10 Markus Lauer , Roser Valenti , H. C. Kandpal , Ram Seshadri , .

Van der Waals semiconducting magnets exhibit a cornucopia of physical phenomena originating from the interplay of their semiconducting and magnetic properties. However, a comprehensive understanding of how semiconducting processes and…

Material systems that exhibit tunable spin-selective conductivity are key components of spintronic technologies. Here we demonstrate a novel type of spin-selective transport, based on the unusual Landau level (LL) sequence observed in…

介观与纳米尺度物理 · 物理学 2023-07-04 En-Min Shih , Qianhui Shi , Daniel Rhodes , Bumho Kim , Kenji Watanabe , Takashi Taniguchi , Kun Yang , James Hone , Cory R. Dean

The electronic structure and magnetic properties of CaCr$\mathrm{O}_3$ have been calculated by two methods, including hybrid-exchange density-function theory and density-functional theory + $U$. The computed densities of states from both of…

强关联电子 · 物理学 2015-05-13 Wei Wu

We present systematic quantitative description of the magnetoconductance of the split-gate quantum wires. Accounting for the exchange and correlation interactions within the spin density function theory (DFT) leads to the lifting of the…

介观与纳米尺度物理 · 物理学 2009-05-26 I. V. Zozoulenko , S. Ihnatsenko

By means of density functional theory, we investigate the magnetic ground state of edge-sharing CuO_2 spin-chains, as found in the (La,Ca,Sr)_14Cu_24O_41system, for instance. Our data rely on spin-polarized electronic structure calculations…

强关联电子 · 物理学 2009-11-13 U. Schwingenschloegl , C. Schuster

The structural and magnetic properties of spinel compounds $CoB_2O_4$ (B=Cr,Mn and Fe) are studied using the DFT+U method and generalized gradient approximation (GGA). We concentrate on understanding the trends in the properties of these…

强关联电子 · 物理学 2016-09-21 Debashish Das , Rajkumar Biswas , Subhradip Ghosh

The magnetic ground states of $R_2$Ru$_2$O$_7$ and $A_2$Ru$_2$O$_7$ with $R=$ Pr, Gd, Ho, and Er, as well as $A=$ Ca, Cd are predicted devising a combination of the cluster-multipole (CMP) theory and spin-density-functional theory (SDFT).…

强关联电子 · 物理学 2022-02-22 Marie-Therese Huebsch , Yuske Nomura , Shiro Sakai , Ryotaro Arita

Various ternary chalcogenide systems and their properties are one of the hot topics for researchers nowadays. In this article, one of the ternary chalcogenide compounds, CdTl2Te4 is studied including its electronic structures and optical…

材料科学 · 物理学 2020-05-11 Aditya Dey

The materials with spin-polarized electronic states have attracted a huge amount of interest due to their potential applications in spintronics. Based on first-principles calculations, we study the electronic characteristics of a series of…

材料科学 · 物理学 2022-01-13 Shenda He , Ruirong Kang , Pan Zhou , Zehou Li , Yi Yang , Lizhong Sun

Magnetism in strongly correlated honeycomb systems with $d^5$ electronic configuration has garnered significant attention due to its potential to realize the Kitaev spin liquid state, characterized by exotic properties. However, real…

强关联电子 · 物理学 2025-11-18 Ritwik Das , Indra Dasgupta

We apply the self-interaction corrected local spin density %(SIC-LSD) approximation to study the electronic structure and magnetic properties of the spinel ferrites MnFe$_{2}$O$_{4}$, Fe$_{3}$O$_{4}$, CoFe$_{2}$O$_{4}$, and…

材料科学 · 物理学 2009-11-11 Z. Szotek , W. M. Temmerman , D. Koedderitzsch , A. Svane , L. Petit , H. Winter

We present a symmetry-based calculation of the electronic structure of a compound semiconductor quantum dot (QD) in the sp^3s* tight-binding model including the spin-orbit interaction. The Hamiltonian matrix is diagonalized exactly for CdTe…

介观与纳米尺度物理 · 物理学 2009-10-31 J. Perez-Conde , A. K. Bhattacharjee

We investigate the thickness-dependent electronic structure of ultrathin SrIrO$_3$ and discover a transition from a semimetallic to a correlated insulating state below 4 unit cells. Low-temperature magnetoconductance measurements show that…

We have investigated electronic structures of La$_3$S$_4$ and Ce$_3$S$_4$ using the LSDA and LSDA+$U$ methods. Calculated density of states (DOS) are compared with the experimental DOS obtained by the valence band photoemission…

材料科学 · 物理学 2009-11-07 J. H. Shim , Kyoo Kim , B. I. Min , J. -S. Kang

Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis of the electronic and magnetic properties…

强关联电子 · 物理学 2019-09-06 Guido Menichetti , Matteo Calandra , Marco Polini

Using elastic and inelastic neutron scattering we show that a cubic spinel, CdCr$_2$O$_4$, undergoes an elongation along the c-axis ($c > a = b$) at its spin-Peierls-like phase transition at $T_N$ = 7.8 K. The N\'{e}el phase ($T < T_N$) has…

强关联电子 · 物理学 2009-11-11 J. -H. Chung , M. Matsuda , S. -H. Lee , K. Kakurai , H. Ueda , T. J. Sato , H. Takagi , K. -P. Hong , S. Park

The crystal and magnetic structures of stoichiometric ZnCr2Se4 have been investigated using synchrotron X-ray and neutron powder diffraction, muon spin relaxation (muSR) and inelastic neutron scattering. Synchrotron X-ray diffraction shows…

强关联电子 · 物理学 2017-04-12 P. Zajdel , W-Y. Li , W. Van Beek , A. Lappas , A. Ziolkowska , S. Jaskiewicz , C. Stock , M. A. Green

Exploring the physics of low-dimensional spin systems and their pressure-driven electronic and magnetic transitions are thriving research field in modern condensed matter physics. In this context, recently antiferromagnetic Cr-based…

强关联电子 · 物理学 2024-01-02 Kuldeep Kargeti , Aadit Sen , S. K. Panda
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