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相关论文: Angular magnetoresistance oscillations in bilayers…

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Magnetoresistive effects are usually invariant upon inversion of the magnetization direction. In noncentrosymmetric conductors, however, nonlinear resistive terms can give rise to a current dependence that is quadratic in the applied…

介观与纳米尺度物理 · 物理学 2017-04-25 Can Onur Avci , Kevin Garello , Abhijit Ghosh , Mihai Gabureac , Santos F. Alvarado , Pietro Gambardella

AB oscillation in weak magnetic field (B<1.5kG) is observed in QPC due to interference between electrons propagating along different QPC channels. We also investigate photo-induced magnetoresistance oscillation in open-regime split-gate QPC…

介观与纳米尺度物理 · 物理学 2024-03-13 Xinghao Wang , Wenfeng Zhang , L. N. Pfeiffer , K. W. Baldwin , K. W. West

Using extensive tight-binding calculations, we investigate (including the spin) the Aharonov-Bohm (AB) effect in monolayer and bilayer trigonal and hexagonal graphene rings with zigzag boundary conditions. Unlike the previous literature, we…

介观与纳米尺度物理 · 物理学 2012-04-19 Igor Romanovsky , Constantine Yannouleas , Uzi Landman

Unidirectional magnetoresistance (UMR) in a ferromagnetic bilayer due to the spin Hall effects (SHEs) provides a facile means of probing in-plane magnetization to avoid complex magnetic tunnel junctions. However, the UMR signal is very weak…

介观与纳米尺度物理 · 物理学 2022-09-01 Kaihua Lou , Qianwen Zhao , Baiqing Jiang , Chong Bi

We have investigated experimentally resonant tunnelling through single-particle states formed around an antidot by a magnetic field, in the fractional quantum Hall regime. For 1/3 filling factor around the antidot, Aharonov-Bohm…

We have studied the spin Hall magnetoresistance (SMR), the magnetoresistance within the plane transverse to the current flow, of Pt/Co bilayers. We find that the SMR increases with increasing Co thickness: the effective spin Hall angle for…

介观与纳米尺度物理 · 物理学 2018-06-21 Masashi Kawaguchi , Daiki Towa , Yong-Chang Lau , Saburo Takahashi , Masamitsu Hayashi

Magneto-oscillations of the electric dipole moment are predicted and analyzed for a single-electron nanoscale ring pierced by a magnetic flux (an Aharonov-Bohm ring) and subjected to an electric field in the ring's plane. These oscillations…

介观与纳米尺度物理 · 物理学 2012-09-11 A. M. Alexeev , M. E. Portnoi

Experimental study of quantum Hall corrals reveals Aharonov-Bohm-Like (ABL) oscillations. Unlike the Aharonov-Bohm effect which has a period of one flux quantum, $\Phi_{0}$, the ABL oscillations possess a flux period of $\Phi_{0}/f$, where…

介观与纳米尺度物理 · 物理学 2007-08-21 M. D. Godfrey , P. Jiang , W. Kang , S. H. Simon , K. W. Baldwin , L. N. Pfeiffer , K. W. West

Electron gases at the surfaces of (001), (110), and (111) oriented SrTiO3 (STO) have been created using Ar+-irradiation with fully metallic behavior and low-temperature-mobility as large as 5500 cm2V-1s-1, 1300 cm2V-1s-1 and 8600 cm2V-1s-1…

强关联电子 · 物理学 2015-06-01 Ludi Miao , Renzhong Du , Yuewei Yin , Qi Li

A small quantum ring with less than 10 electrons was studied by transport spectroscopy. For strong coupling to the leads a Kondo effect is observed and used to characterize the spin structure of the system in a wide range of magnetic…

介观与纳米尺度物理 · 物理学 2009-11-07 U. F. Keyser , C. Fuhner , S. Borck , R. J. Haug , M. Bichler , G. Abstreiter , W. Wegscheider

We study interaction and radial polarization effects on the the absorption spectrum of neutral bound magnetoexcitons confined in quantum-ring structures. We show that the size and orientation of the exciton's dipole moment, as well as the…

介观与纳米尺度物理 · 物理学 2009-01-23 Luis G. Dias da Silva , Sergio E. Ulloa , Tigran V. Shahbazyan

We present low-temperature magnetotransport measurements on graphene rings encapsulated in hexagonal boron nitride. We investigate phase-coherent transport and show Aharonov-Bohm (AB) oscillations in quasi-ballistic graphene rings with hard…

We present a detailed analysis of the Aharonov-Bohm interference oscillations manifested through transmission of an electron in a mesoscopic ring with a magnetic impurity atom inserted in one of its arms. The electron interacts with the…

介观与纳米尺度物理 · 物理学 2007-05-23 Sandeep K. Joshi , Debendranath Sahoo , A. M. Jayannavar

Electrical readout of magnetic states is a key to realize novel spintronics devices for efficient computing and data storage. Unidirectional magnetoresistance (UMR) in bilayer systems, consisting of a spin source material and a magnetic…

To date, magnetic proximity effect (MPE) has only been conclusively observed in ferromagnet (FM) based systems. We report the observation of anomalous Hall effect and anisotropic magnetoresistance in angular dependent magnetoresistance…

材料科学 · 物理学 2022-08-10 Yang Cheng , Sisheng Yu , Adam S. Ahmed , Menglin Zhu , Jinwoo Hwang , Fengyuan Yang

In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F), the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall effect gives a small correction to the in-plane…

介观与纳米尺度物理 · 物理学 2021-07-15 David A. Reiss , Tobias Kampfrath , Piet W. Brouwer

By solving the Boltzmann transport equation we investigate theoretically the general form of oscillations in the resistivity caused by varying the direction of an applied magnetic field for the case of quasi-two dimensional systems on…

介观与纳米尺度物理 · 物理学 2016-06-06 Joseph C. A. Prentice , Amalia I. Coldea

The nonlinear electronic transport properties of a ballistic Aharonov-Bohm ring are investigated. It is demonstrated how the electronic interaction breaks the phase rigidity in a two-probe mesoscopic device as the voltage bias is increased.…

介观与纳米尺度物理 · 物理学 2015-05-14 Alexis R. Hernández , Caio H. Lewenkopf

High-order anisotropic magnetoresistance (AMR) is observed up to the 18th harmonic in cubic Fe(001) thin films, overturning the long-standing paradigm that only two- and four-fold terms are symmetry-allowed. Using angle-resolved transport…

其他凝聚态物理 · 物理学 2025-12-25 Haoran Chen , Yue Chen , Yizi Feng , Ruda Guo , Yuanfei Fan , Hongyue Xu , Tong Wu , Zhongxun Guo , Di Yue , Xiaofeng Jin , Yi Liu , Zhe Yuan , Yizheng Wu

One of recent surprising discoveries is the unusual anisotropic magnetoresistance (UAMR) that depends on two magnetization components perpendicular to the current differently, in contrast to the conventional anisotropic magnetoresistance…

介观与纳米尺度物理 · 物理学 2023-07-19 M. Q. Dong , Zhi-Xin Guo , X. R. Wang