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We have performed polarized and unpolarized small angle neutron scattering experiments on single crystals of HoMnO3 and have found that an increase in magnetic scattering at low momentum transfers begins upon cooling through temperatures…

Strongly Correlated Electrons · Physics 2015-05-14 B. G. Ueland , J. W. Lynn , M. Laver , Y. J. Choi , S. W. Cheong

The study of abrupt increases in magnetization with magnetic field known as metamagnetic transitions has opened a rich vein of new physics in itinerant electron systems, including the discovery of quantum critical end points with a marked…

The combination of isochoric heating of solids by free electron lasers (FEL) and in situ diagnostics by X-ray Thomson scattering (XRTS) allows for measurements of material properties at warm dense matter (WDM) conditions relevant for…

Crystal-field excitations, for example in transition-metal oxides where a rare-earth element is used as a spacer between the transition-metal-oxide tetrahedra and octahedra, are assumed to be extremely robust with respect to external…

Strongly Correlated Electrons · Physics 2021-10-12 Joel O'Brien , Guochu Deng , Dehong Yu , Xiaoxuan Ma , Zhenjie Feng , Wei Ren , Shixun Cao , Robert A. Robinson , Garry J. McIntyre , Clemens Ulrich

Electric-field (E-field) control of magnetism enabled by multiferroics has the potential to revolutionize the landscape of present memory devices plagued with high energy dissipation. To date, this E-field controlled multiferroic scheme at…

Two kinds of electroconvection (EC) patterns in an ether-bridged bent-core nematic liquid crystal material (BCN), which appear in different frequency ranges, are examined and compared in this paper. One is a longitudinal pattern with the…

Soft Condensed Matter · Physics 2014-12-02 Ying Xiang , Yi-Kun Liu , Ágnes Buka , Nándor Éber , Zhi-Yong Zhang , Ming-Ya Xu , Everett Wang

We report a rather high dependence of the dielectric permittivity on the magnetic field in La2/3Ca1/3MnO3. The variation is maximum at around 270 K, little above the Curie temperature, TC, and it reaches a 30% under only 0.5 T. We attribute…

Strongly Correlated Electrons · Physics 2009-11-11 J. Rivas , J. Mira , B. Rivas-Murias , A. Fondado , J. Dec , W. Kleemann , M. A. Senaris Rodriguez

Oxides RNiO3 (R = rare-earth, R # La) exhibit a metal-insulator (MI) transition at a temperature TMI and an antiferromagnetic (AF) transition at TN. Specific heat (CP) and anelastic spectroscopy measurements were performed in samples of…

Strongly Correlated Electrons · Physics 2015-05-20 V. B. Barbeta , R. F. Jardim , M. S. Torikachvili , M. T. Escote , F. Cordero , F. M. Pontes , F. Trequattrini

The Bose-Einstein condensation of excitons continues to garner immense attention as a prototypical example for observing emergent properties from many-body quantum effects. In particular, Titanium Diselenide (TiSe$_2$) is a promising…

Materials Science · Physics 2019-12-06 Chao Lian , Zulfikhar A. Ali , Bryan M. Wong

We study the transient response of an electrolytic cell subject to a small, suddenly applied temperature increase at one of its two bounding electrode surfaces. An inhomogeneous temperature profile then develops, causing, via the Soret…

Chemical Physics · Physics 2019-05-01 Mathijs Janssen , Markus Bier

The proposed switching mechanism is based on an electronically-induced metal-insulator transition occurring in conditions of the excess non-equilibrium carrier density under the applied electric field. First, this mechanism is developed on…

Materials Science · Physics 2007-05-23 P. P. Boriskov , A. L. Pergament , A. A. Velichko , G. B. Stefanovich , N. A. Kuldin

Current Induced Resistance Switching (CIS) was recently observed in thin tunnel junctions with ferromagnetic (FM) electrodes \emph{i.e} FM/I/FM. This effect was attributed to electromigration of metallic atoms in nanoconstrictions in the…

Materials Science · Physics 2009-11-11 J. Ventura , J. B. Sousa , Y. Liu , Z. Zhang , P. P. Freitas

Phase separation naturally occurs in a variety of magnetic materials and it often has a major impact on both electric and magnetotransport properties. In resistive switching systems, phase separation can be created on demand by inducing…

La$_{3}$Ni$_{2}$O$_{7}$ has garnered widespread interest recently due to its high-temperature superconductivity under pressure, accompanied by charge density wave (CDW) ordering and metal-insulator (MI) transitions in the phase diagram.…

Superconductivity · Physics 2024-10-21 Xin-Wei Yi , Ying Meng , Jia-Wen Li , Zheng-Wei Liao , Jing-Yang You , Bo Gu , Gang Su

We study how strongly correlated electrons on a dissipative lattice evolve from equilibrium when driven by a constant electric field, focusing on the extent of the linear regime and hysteretic non-linear effects at higher fields. We access…

Strongly Correlated Electrons · Physics 2015-06-18 Jiajun Li , Camille Aron , Gabriel Kotliar , Jong E Han

The superconducting transition leads to a sharp resistance drop in a temperature interval that can be a small fraction of the critical temperature T$_c$. A superconductor exactly at T$_c$ is thus very sensitive to all kinds of thermal…

Superconductivity · Physics 2020-05-25 David Perconte , Samuel Manas-Valero , Eugenio Coronado , Isabel Guillamon , Hermann Suderow

Current Induced Resistance Switching (CIS) was recently observed in thin tunnel junctions (TJs) with ferromagnetic (FM) electrodes and attributed to electromigration of metallic atoms in nanoconstrictions in the insulating barrier. The CIS…

Materials Science · Physics 2007-05-23 J. Ventura , Z. Zhang , Y. Liu , J. B. Sousa , P. P. Freitas

The response to a parallel magnetic field of the very dilute insulating two-dimensional system of electrons in silicon MOSFET's is dramatic and similar to that found on the conducting side of the metal-insulator transition: there is a large…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , D. Simonian , M. P. Sarachik , S. V. Kravchenko , T. M. Klapwijk

An antiferromagnetic transition is observed in single crystal EuRh2As2 at a high temperature T_N = 47 K compared to the ferromagnetic Weiss temperature theta = 12 K. We show that this is, surprisingly, consistent with mean field theory. A…

Strongly Correlated Electrons · Physics 2010-11-12 Yogesh Singh , Y. Lee , B. N. Harmon , D. C. Johnston

We analyse the effects of applying an electric field on the critical temperature, Ts, at which superionicity appears in archetypal fast ion conductor CaF2 by means of molecular dynamics simulations. We find that the onset of superionicity…

Materials Science · Physics 2015-08-31 Claudio Cazorla