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The pressure ($p$) -- temperature ($T$) phase diagram for microscopic magnetism in the multiferroic compound HoMn$_{2}$O$_{5}$ was established using neutron diffraction measurements under a hydrostatic pressure up to 1.25 GPa. At ambient…

Strongly Correlated Electrons · Physics 2009-11-13 Hiroyuki Kimura , Keisuke Nishihata , Yukio Noda , Naofumi Aso , Kazuyuki Matsubayashi , Yoshiya Uwatoko , Tetsuya Fujiwara

Despite of the tremendous efforts spent on the oxygen vacancy migration in determining the property optimization of oxygen-vacancy enrichment transition metal oxides, few has focused on their dynamic behaviors non-equilibrium states. In…

Materials Science · Physics 2019-10-16 Bingbing Zhang , Xu He , Jiali Zhao , Can Yu , Haidan Wen , Sheng Meng , Eric Bousquet , Yuelin Li , Kuijuan Jin , Ye Tao , Haizhong Guo

We have developed an experimental setup to simultaneously acquire magneto-transmission spectra and measure the photoconductive response. The low-temperature ($T$=4.2 K) magneto-transmission data for weakly doped InSb in the frequency range…

Materials Science · Physics 2026-01-06 M. E. Bal , N. Deßmann , K. Saeedi , U. Zeitler

Dynamical multiferroicity features entangled dynamic orders: fluctuating electric dipoles induce magnetization. Hence, the material with paraelectric fluctuations can develop magnetic signatures if dynamically driven. We identify the…

We report a magnetic x-ray scattering study of the field-induced multiferroic GdFe3(BO3)4. Resonant x-ray magnetic scattering at the Gd LII,III edges indicates that the Gd moments order at TN ~ 37 K. The magnetic structure is incommensurate…

Strongly Correlated Electrons · Physics 2009-11-13 Haiding Mo , Christie S. Nelson , Leonard N. Bezmaternykh , V. T. Temerov

We report the magnetic diffraction pattern and spin wave excitations in (CD$_3$)$_2$ND$_2$[Mn(DCO$_2$)$_3$] measured using elastic and inelastic neutron scattering. The magnetic structure is shown to be a G-type antiferromagnet with moments…

Strongly Correlated Electrons · Physics 2017-10-02 H. C. Walker , H. D. Duncan , M. D. Le , D. A. Keen , D. J. Voneshen , A. E. Phillips

Magnetic straintronics, the strain-mediated control of magnetic anisotropy, has emerged as a key direction for next-generation energy-efficient technologies. In multiferroic heterostructures, magnetoelectric coupling is typically achieved…

The low-temperature magnetic phase diagram of the multiferroic system FeTe$_2$O$_5$Br down to 300 mK and up to 9 T is presented. Short-range magnetic correlations within the crystal layers start to develop already at $\sim$50 K, i.e., far…

Strongly Correlated Electrons · Physics 2015-05-19 M. Pregelj , A. Zorko , O. Zaharko , Z. Kutnjak , M. Jagodič , Z. Jagličić , H. Berger , M. de Souza , C. Balz , M. Lang , D. Arčon

We have studied the temperature evolution of the inverse photoemission spectra of phase separated La$_{0.2}$Sr$_{0.8}$MnO$_{3}$. To identify the features in the room temperature experimental spectra, band structure calculations using…

Strongly Correlated Electrons · Physics 2014-11-07 Navneet Singh , M. Maniraj , J. Nayak , S. K. Pandey , R. Bindu

The (H,T)-phase diagram of the multiferroic perovskite TbMnO$_3$ was studied by high-resolution thermal expansion $\alpha(T)$ and magnetostriction $\Delta L(H)/L$ measurements. Below $T_{N}\simeq 42$ K, TbMnO$_3$ shows antiferromagnetic…

Strongly Correlated Electrons · Physics 2009-11-13 D. Meier , N. Aliouane , D. N. Argyriou , J. A. Mydosh , T. Lorenz

In the framework of real-time time-dependent density functional theory (RT-TDDFT) we unravel the layer-resolved dynamics of the electronic structure of a (Fe)$_1$/(MgO)$_3$(001) multilayer system after an optical excitation with a frequency…

Materials Science · Physics 2019-05-08 Markus Ernst Gruner , Rossitza Pentcheva

Advances in complex oxide heteroepitaxy have highlighted the enormous potential of utilizing strain engineering via lattice mismatch to control ferroelectricity in thin-film heterostructures. This approach, however, lacks the ability to…

In this paper detailed neutron scattering measurements of the magnetic excitation spectrum of CuCrO$_2$ in the ordered state below $T_{\rm{N1}}=24.2$ K are presented. The spectra are analyzed using a model Hamiltonian which includes…

We have determined the magnetic structure of the low-temperature incommensurate phase of multiferroic YMn2O5 using single-crystal neutron diffraction. By employing corepresentation analysis, we have ensured full compliance with both…

Materials Science · Physics 2009-11-13 P. G. Radaelli , C. Vecchini , L. C. Chapon , P. J. Brown , S. Park , S-W. Cheong

The transition between different states in manganites can be driven by various external stimuli. Controlling these transitions with light opens the possibility to investigate the microscopic path through which they evolve. We performed…

Strongly Correlated Electrons · Physics 2014-01-17 L. Piazza , C. Ma , H. X. Yang , A. Mann , Y. Zhu , J. Q. Li , F. Carbone

Time-resolved transmittance measurements performed on Ga$_{0.94}$Mn$_{0.06}$As in the vicinity of the Mn-induced mid-infrared absorption band are presented. Upon photo-excitation, a slow increase (hundreds of ps timescale) of the…

Materials Science · Physics 2007-05-23 E. Kojima , J. B. Heroux , R. Shimano , Y. Hashimoto , S. Katsumoto , Y. Iye , M. Kuwata-Gonokami

We set forth the structural and magnetic properties of the frustrated spin-$5/2$ triangle lattice antiferromagnet Na$_3$Fe(PO$_4$)$_2$ examined via x-ray diffraction, magnetization, heat capacity, and neutron diffraction measurements on the…

Materials Science · Physics 2022-01-26 Sebin J. Sebastian , A. Jain , S. M. Yusuf , M. Uhlarz , R. Nath

Multiferroics have found renewed interest in topological magnetism and for logic-in-memory applications. Among them, SrMnO$_{3}$, possessing strong magnetoelectric coupling is gaining attention for the design of coexisting magnetic and…

Materials Science · Physics 2022-12-28 J. J. L. van Rijn , D. Wang , B. Sanyal , T. Banerjee

The Prototypical magnetic memory shape alloy Ni$_2$MnGa undergoes various phase transitions as a function of temperature, pressure, and doping. In the low-temperature phases below 260 K, an incommensurate structural modulation occurs along…

Strongly Correlated Electrons · Physics 2017-12-06 G. Lantz , M. J. Neugebauer , M. Kubli , M. Savoini , E. Abreu , K. Tasca , C. Dornes , V. Esposito , J. Rittmann , Y. W. Windsor , P. Beaud , G. Ingold , S. L. Johnson

We present evidence for the coexistence of ferromagnetic metallic and charge ordered insulating phases in strained thin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$ at low temperatures. Such a phase separated state is confirmed using low…

Strongly Correlated Electrons · Physics 2009-11-07 Amlan Biswas , M. Rajeswari , R. C. Srivastava , T. Venkatesan , R. L. Greene , Q. Lu , A. L. de Lozanne , A. J. Millis