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In the triangular layered magnet PdCrO2 the intralayer magnetic interactions are strong, however the lattice structure frustrates interlayer interactions. In spite of this, long-range, 120$^\circ$ antiferromagnetic order condenses at $T_N =…

We report angle-dependent magnetoresistance measurements on (TMTSF)2ClO4 that provide strong support for a new macroscopic quantum phenomenon, the interference commensurate (IC) effect, in quasi-one dimensional metals. In addition to…

Strongly Correlated Electrons · Physics 2009-11-11 H. I. Ha , A. G. Lebed , M. J. Naughton

Using first-principles calculations, we explore the magnetoelectric properties of the room-temperature multiferroic crystal BiCoO$_3$. We use both applied magnetic field and finite-difference techniques to show that BiCoO$_3$ is…

Materials Science · Physics 2024-06-11 Maxime Braun , Bogdan Guster , Andrea Urru , Houria Kabbour , Eric Bousquet

The interplay of charge, spin, orbital and lattice degrees of freedom has recently received great interest due to its potential to improve the magnetocaloric effect (MCE) for the purpose of magnetic cooling applications. Here we propose a…

Materials Science · Physics 2019-02-08 M. S. Song , K. K. Cho , B. Y. Kang , S. B. Lee , B. K. Cho

Many technological applications of multiferroics are based on their ability to reconstruct the domain structure (DS) under the action of small external fields. In the present paper we analyze the different scenarios of the DS behavior in a…

Mesoscale and Nanoscale Physics · Physics 2015-03-13 Helen V. Gomonay , Ieugeniya G. Korniienko , Vadim M. Loktev

We report nuclear magnetic resonance measurements of the spin-1/2 anisotropic triangular lattice antiferromagnet Cs$_2$CuCl$_4$ as a function of temperature and applied magnetic field. The observed temperature and magnetic field dependence…

Strongly Correlated Electrons · Physics 2015-06-04 M. -A. Vachon , G. Koutroulakis , V. F. Mitrović , Ookie Ma , J . B. Marston , A. P. Reyes , P. Kuhns , R. Coldea , Z. Tylczynski

We report the discovery of linear magnetoelectric effect in the well-known green phase compound, Sm2BaCuO5, which crystallizes in the centrosymmetric orthorhombic (Pnma) structure. Magnetization and specific heat measurements reveal the…

Strongly Correlated Electrons · Physics 2019-10-02 Premakumar Yanda , N. V. Ter-Oganessian , A. Sundaresan

The rigorous analysis of textbook result(Chiu and Quinn, 1974) gives unexpectedly the dramatic change of magnetoplasmon spectrum taking into account both the arbitrary dissipation and asymmetric off-plane structure of 2D system. For given…

Mesoscale and Nanoscale Physics · Physics 2017-09-21 M. V. Cheremisin

The novel magnetic phase diagram of the $Cs_2CuCl_{4-x}Br_x$ mixed system is established by means of single crystal neutron diffraction in the lowest temperature region and zero magnetic field. Two long-range ordered magnetic phases exist…

We study the magnetoconductivity induced by the axial anomaly via the chiral magnetic effect in strongly coupled holographic models. An important ingredient in our models is that the axial charge is non-conserved beyond the axial anomaly.…

High Energy Physics - Theory · Physics 2015-05-05 Amadeo Jimenez-Alba , Karl Landsteiner , Yan Liu , Ya-Wen Sun

Our magnetic, electrical, and thermal measurements on single-crystals of the novel Mott insulator, Sr2IrO4, reveal a novel giant magneto-electric effect (GME) arising from a frustrated magnetic/ferroelectric state whose signatures are: (1)…

Strongly Correlated Electrons · Physics 2015-05-13 S. Chikara , O. Korneta , W. P. Crummett , L. E. DeLong , P. Schlottmann , G. Cao

Magnetoelectric (ME) effect, the phenomenon of inducing magnetization by application of an electric field or vice versa, holds great promise for magnetic sensing and switching applications. Studies of the ME effect have so far focused on…

Mesoscale and Nanoscale Physics · Physics 2021-10-19 Jieun Lee , Zefang Wang , Hongchao Xie , Kin Fai Mak , Jie Shan

We report an experimental demonstration of the magnetoelectrocaloric effect (MECE) in multiferroic $\mathrm{GdFeO_3}$. The temperature of the magnetic material changes when an external electric field is suddenly changed. MECE is the largest…

Strongly Correlated Electrons · Physics 2024-09-05 Rintaro Ikeda , Takashi Kurumaji , Yusuke Tokunaga , Taka-hisa Arima

We study dipolar relaxation in both ultra-cold thermal and Bose-condensed chromium atom gases. We show three different ways to control dipolar relaxation, making use of either a static magnetic field, an oscillatory magnetic field, or an…

By using broadband linear and nonlinear dielectric spectroscopy we studied the magnetoelectric dynamics in the chiral antiferromagnet MnWO4. In the multiferroic phase the dielectric response is dominated by the dynamics of domains and…

Strongly Correlated Electrons · Physics 2014-04-25 D. Niermann , C. P. Grams , M. Schalenbach , P. Becker , L. Bohaty , J. Stein , M. Braden , J. Hemberger

We report the magnetic, dielectric and ferroelectric properties of polycrystalline iron vanadate(FeVO4), which has been recently found to exhibit multiferroicity in low temperature with noncollinear magnetic orderings. The influence of…

Materials Science · Physics 2011-02-21 L. Zhao , M. P. Y. Wu , K. W. Yeh , M. K. Wu

Using neutron diffraction, we have studied the magnetic field effect on charge structures in the charge-ordered multiferroic material LuFe$_2$O$_4$. An external magnetic field is able to change the magnitude and correlation lengths of the…

Strongly Correlated Electrons · Physics 2009-04-10 Jinsheng Wen , Guangyong Xu , Genda Gu , S. M. Shapiro Brookhaven National Laboratory

We present results of in field directional point contact spectroscopy (DPCS) study in the quaternary borocarbide superconductor YNi2B2C, which is characterized by a highly anisotropic superconducting gap function. For I||a, the…

Superconductivity · Physics 2007-05-23 S Mukhopadhyay , Goutam Sheet , P Raychaudhuri , H Takeya

The process of magnetic relaxation was studied in bismuth ferrite BiFeO3 multiferroic micro-cubes obtained by means of microwave assisted Pechini process. Two different mechanisms of relaxation were found. The first one is a rapid magnetic…

Magnetic dynamics of a bulk ferromagnet, a new single crystalline compound Co7(TeO3)4Br6, was studied by ac susceptibility and the related techniques. Very large Arrhenius activation energy of 17.2 meV (201 K) and long attempt time…

Materials Science · Physics 2011-09-20 M. Prester , I. Zivkovic , D. Drobac , V. Surija , D. Pajic , H. Berger
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