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We study the effect of the domain wall on electronic transport properties in wire of ferromagnetic 3$d$ transition metals based on the linear response theory. We considered the exchange interaction between the conduction electron and the…

介观与纳米尺度物理 · 物理学 2009-10-31 Gen Tatara

Recent discovery of transport anomaly in graphene demonstrated that a system known to be weakly interacting may become strongly correlated if system parameter(s) can be tuned such that fermi surface is sufficiently small. We study the…

高能物理 - 理论 · 物理学 2017-11-22 Yunseok Seo , Geunho Song , Chanyong Park , Sang-Jin Sin

Transtor and memtranstor are the fourth basic linear and memory elements, which allows direct coupling of charge (q) to magnetic flux ({\phi}) via linear and non-linear ME effects, respectively. It is found here that large variation of…

材料科学 · 物理学 2021-11-09 Yisheng Chai , Dashan Shang , SaeHwan Chun , Young Sun , KeeHoon Kim

Iron-based hexaferrites are critical-element-free permanent magnet components of magnetic devices. Of particular interest is electron-doped M-type hexaferrite i.e., LaFe$_{12}$O$_{19}$ (LaM) in which extra electrons introduced by lanthanum…

材料科学 · 物理学 2021-10-04 Churna Bhandari , Michael E. Flatté , Durga Paudyal

The book includes all main physical properties of d- and f-transition-metal systems and corresponding theoretical concepts. Especial attention is paid to the theory of magnetism and transport phenomena. Some examples of non-traditional…

凝聚态物理 · 物理学 2021-09-01 V. Yu. Irkhin , Yu. P. Irkhin

We report the nanoscale electrical imaging results in hexagonal $Lu_{0.6}Sc_{0.4}FeO_3$ single crystals using conductive atomic force microscopy (C-AFM) and scanning microwave impedance microscopy (MIM). While the dc and ac response of the…

材料科学 · 物理学 2018-08-28 Xiaoyu Wu , Kai Du , Lu Zheng , Di Wu , Sang-Wook Cheong , Keji Lai

Density functional theory (DFT) calculations are used to study the magnetic and ferroelectric properties of Sr$_{1-x}$Ba$_{x}$MnO$_3$, with focus on $x=0.5$, under isotropic volume expansion/compression and biaxial strain. Our results…

材料科学 · 物理学 2020-11-11 Alexander Edström , Claude Ederer

We present an approach for calculating the electronic structure and transport properties of nanoscopic conductors that takes into account the dynamical correlations of strongly interacting d- or f-electrons by combining density functional…

介观与纳米尺度物理 · 物理学 2010-11-12 D. Jacob , K. Haule , G. Kotliar

The response to an electric field (DC and AC) of electronic systems in which the Fermi "surface" consists of a number of 3D Weyl points (such as some pyrochlore iridates) exhibits a peculiar combination of characteristics usually associated…

强关联电子 · 物理学 2015-06-15 B. Rosenstein , M. Lewkowicz

We present electrical transport experiments performed on submicron hybrid devices made of a ferromagnetic conductor (Co) and a superconducting (Al) electrode. The sample was patterned in order to separate the contributions of the Co…

介观与纳米尺度物理 · 物理学 2009-11-07 M. Giroud , K. Hasselbach , H. Courtois , D. Mailly , B. Pannetier

Dirac metals are characterized by the linear dispersion of fermionic quasi-particles, with the Dirac point hidden inside a Fermi surface. We study the magnetotransport in these materials using chiral kinetic theory to describe within the…

介观与纳米尺度物理 · 物理学 2015-10-14 Gustavo M. Monteiro , Alexander G. Abanov , Dmitri E. Kharzeev

The electronic transport properties and the magnetic susceptibility were measured in detail in $YBaCo_2O_{5.45}$. Close to the so-called metal-insulator transition, strong effects of resistance relaxation, a clear thermal hysteresis and a…

材料科学 · 物理学 2009-11-13 A. Pautrat , P. Boullay , S. Hebert , V. Caignaert

The hexaferrites are known to exhibit a wide range of magnetic structures, some of which are connected to important technological applications and display magnetoelectric properties. We present data on the low field magnetic structures…

We investigated static and dynamic magnetoelectric properties of single crystalline BaSrCoZnFe$_{11}$AlO$_{22}$ which is a room-temperature multiferroic with Y-type hexaferrite crystal structure. Below $300\,\rm K$, a purely…

In this paper we study the dynamical properties of charged systems immersed in an external magnetic field and perturbed by a set of scalar operators breaking translations either spontaneously or pseudo-spontaneously. By combining…

高能物理 - 理论 · 物理学 2021-05-19 Andrea Amoretti , Daniel Arean , Daniel K. Brattan , Nicodemo Magnoli

We report on nonequilibrium transport measurements in a high-mobility two-dimensional electron system subject to weak magnetic field and dc excitation. Detailed study of dc-induced magneto-oscillations, first observed by Yang {\em et al}.,…

介观与纳米尺度物理 · 物理学 2007-05-23 W. Zhang , H. -S. Chiang , M. A. Zudov , L. N. Pfeiffer , K. W. West

I present a theory of electron dynamics in semiconductors with slowly varying composition. I show that the frequency-dependent conductivity, required for the description of transport and optical properties, can be obtained from a knowledge…

凝聚态物理 · 物理学 2016-08-31 Michael R. Geller

We study theoretically electronic transport through a contact of a quantum wire with 2D or 3D leads and find that if the contact is not smooth and adiabatic then the conduction is strongly suppressed below a threshold voltage $V_T$, while…

介观与纳米尺度物理 · 物理学 2015-10-01 S. N. Artemenko , P. P. Aseev , D. S. Shapiro

Three-dimensional (3D) metals/semimetals under magnetic field have an instability toward a density wave (DW) ordering which breaks a translational symmetry along the field direction. Effective boson models for the DW phases take forms of XY…

强关联电子 · 物理学 2017-05-10 Xiao-Tian Zhang , Ryuichi Shindou

In the presence of the fluid helicity $\boldsymbol{v} \cdot \boldsymbol{\omega}$, the magnetic field induces an electric current of the form $\boldsymbol{j} = C_{\rm HME} (\boldsymbol{v} \cdot \boldsymbol{\omega}) \boldsymbol{B}$. This is…

高能物理 - 理论 · 物理学 2021-06-08 Naoki Yamamoto , Di-Lun Yang