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We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V$_2$O$_3$ using low-energy muon spin relaxation,…

We present multi-scale dynamical simulations of voltage-induced insulator-to-metal transition in the double exchange model, a canonical example of itinerant magnet and correlated electron systems. By combining nonequilibrium Green's…

Mesoscale and Nanoscale Physics · Physics 2023-03-21 Gia-Wei Chern

The effect of $^{16}$O $\to$ $^{18}$O isotope substitution on electrical resistivity and magnetic susceptibility of Sm$_{1-x}$Sr$_x$MnO$_3$ manganites is analyzed. It is shown that the oxygen isotope substitution drastically affects the…

Strongly Correlated Electrons · Physics 2009-11-07 N. A. Babushkina , E. A. Chistotina , O. Yu. Gorbenko , A. R. Kaul , D. I. Khomskii , K. I. Kugel

We have studied the [100]-[110] anisotropy of the Compton profile in the bilayer manganite. Quantitative agreement is found between theory and experiment with respect to the anisotropy in the two metallic phases (i.e. the low temperature…

Materials Science · Physics 2009-05-23 B. Barbiellini , A. Koizumi , P. E. Mijnarends , W. Al-Sawai , Hsin Lin , T. Nagao , K. Hirota , M. Itou , Y. Sakurai , A. Bansil

Metal-insulator transition (MIT) is one of the most conspicuous phenomena in correlated electron systems. However such transition has rarely been induced by an external magnetic field as the field scale is normally too small compared with…

Strongly Correlated Electrons · Physics 2020-12-02 Guangqiang Wang , Guoqing Chang , Huibin Zhou , Wenlong Ma , Hsin Lin , M. Zahid Hasan , Su-Yang Xu , Shuang Jia

A major challenge in condensed matter physics is integrating topological phenomena with correlated electron physics to leverage both types of states for next-generation quantum devices. Metal-insulator transitions (MITs) are central to…

Using first-principles calculations, we show that the (001) surface of the ferromagnet La$_{1-x}$Sr$_{x}$MnO$_{3}$ under epitaxial compression favors antiferromagnetic ordering in the first few surface layers, coexisting with ferromagnetic…

Materials Science · Physics 2013-07-02 F. Cossu , U. Schwingenschlögl , G. Colizzi , A. Filippetti , Vincenzo Fiorentini

We show that a static electric field induces the transition from a ferromagnetic metal to an antiferromagnetic insulator owing to the Bloch oscillation of conduction electrons. In the steady state, the electric current is inversely…

Strongly Correlated Electrons · Physics 2020-07-28 Atsushi Ono , Sumio Ishihara

We have investigated the magnetic field-induced metal-insulator transition in the tau-phase organic conductors, which occurs in fields above 35 T, and below 14 K, by magnetization, thermoelectric, and pressure dependent transport methods.…

Strongly Correlated Electrons · Physics 2009-11-10 D. Graf , E. S. Choi , J. S. Brooks , N. Harrison , K. Murata , T. Konoike , G. Papavassilou , G. A. Mousdis

Zn0.96Mn0.04O samples were synthesized by solid state reaction technique to explore their magnetic behavior. Structural, morphological and magnetic properties of the samples have been found to be modified by 50 MeV Li+3 ion beam…

Materials Science · Physics 2012-06-26 S. K. Neogi , S. Chattapadhyay , R. Karmakar , Aritra Banerjee , S. Bandyopadhyay , Alok Banerjee

We present a detailed magnetothermal study of Pr(0.7)Ca(0.3)MnO(3), a perovskite manganite in which an insulator-metal transition can be driven by magnetic field, but also by pressure, visible light, x-rays, or high currents. We find that…

Condensed Matter · Physics 2009-10-31 M. Roy , J. F. Mitchell , A. P. Ramirez , P. Schiffer

In this paper, we examine the possible influence of extrinsic factors on the electrical and magnetotransport of La(0.67)Ca(0.33)Mn(1-x)Ru(x)O(3) (x < 0.10). These results not only exclude the extrinsic factors, but establishes the fact that…

Materials Science · Physics 2009-11-11 L. Seetha Lakshmi , V. Sridharan , R. Rawat , A. A. Sukumar , M. Kamuddin , V. S. Sastry , V. S. Raju

Low-energy antiferromagnetic phase transitions offer an appealing platform for low-power spintronic functionalities, yet their direct electrical access in insulating antiferromagnets remains challenging, particularly in the low-field regime…

The effect of resistive switching in doped manganites being in the ferromagnetic state has been studied using resistive and magneto-optic methods. The visualization of magnetic structure of La0.75Sr0.25MnO3-x single crystals, and its…

Other Condensed Matter · Physics 2009-11-11 N. A. Tulina , L. S. Uspenskaya , V. V. Sirotkin , Y. M. Mukovskii , D. A Shulyatev

Itinerant metamagnetism transition is observed and studied in perovskite La1-xCaxMn0.90Cu0.10O3 system for x = 0.30. At a constant low temperature, 10 K < T < 150 K, there is a continuous second-order metamagnetism jump from a low magnetic…

Strongly Correlated Electrons · Physics 2009-06-03 Tian Gao , Shixun Cao , Shujuan Yuan , Chao Jing , Baojuan Kang , Jincang Zhang

The electrodynamics near the metal-to-insulator transitions (MIT) induced, in V3O5 single crystals, by both temperature (T) and pressure (P) has been studied by infrared spectroscopy. The T- and P-dependence of the optical conductivity may…

Strongly Correlated Electrons · Physics 2009-11-13 L. Baldassarre , A. Perucchi , E. Arcangeletti , D. Nicoletti , D. Di Castro , P. Postorino , V. A. Sidorov , S. Lupi

Pressure effects on the charge and spin states and the relation between the ferromagnetic and metallic states were explored on the small bandwidth manganite Pr$_{1-x}$Ca$_{x}$MnO$_{3}$ (x = 0.25, 0.3, 0.35). Under pressure, the charge…

Condensed Matter · Physics 2007-05-23 Congwu Cui , Trevor A. Tyson

Interfacial charge transfer in oxide heterostructures gives rise to a rich variety of electronic and magnetic phenomena. Designing heterostructures where one of the thin-film components exhibits a metal-insulator transition opens a…

Optically-induced phase transitions of the manganite $\rm Pr_{1/3}Ca_{2/3}MnO_3$ have been simulated using a model Hamiltonian, that captures the dynamics of strongly correlated charge, orbital, lattice, and spin degrees of freedom. Its…

Strongly Correlated Electrons · Physics 2020-12-01 Sangeeta Rajpurohit , Liang Z. Tan , Christian Jooss , P. E. Blöchl

We demonstrate an electrically induced, non-volatile, metal-insulator phase transition in a MoS$_2$ transistor. A single crystalline, epitaxially grown, PbZr$_{0.2}$Ti$_{0.8}$O$_3$ (PZT) was placed in the gate of a field effect transistor…