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相关论文: Singular angular magnetoresistance and sharp reson…

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We report on the angular and field dependence of the magnetoresistance (MR) in bilayers of Pt/EuO_{1-x} thin films, measured in both in-plane and out-of-plane geometries at different temperatures (T). Presence of oxygen vacancies manifested…

介观与纳米尺度物理 · 物理学 2020-01-17 Kingshuk Mallick , Aditya A. Wagh , Adrian Ionescu , Crispin H. W. Barnes , P. S. Anil Kumar

A magnetoresistance (MR) anomaly at low temperatures has been observed in a variety of systems, ranging from low-dimensional chalcogenides to spin and charge density wave (SDW/CDW) metals and, most recently, topological semimetals. In some…

材料科学 · 物理学 2025-04-10 Yejun Feng , Yishu Wang , T. F. Rosenbaum , P. B. Littlewood , Hua Chen

We present measurements of the resistivity $\rho_{x,x}$ of URu2Si2 high-quality single crystals in pulsed high magnetic fields up to 81~T at a temperature of 1.4~K and up to 60~T at temperatures down to 100~mK. For a field \textbf{H}…

Several strongly correlated metals display B-linear magnetoresistance (LMR) with a universal slope, in sharp contrast to the $B^2$ scaling predicted by Fermi liquid theory. We provide a unifying explanation of the origin of LMR by focusing…

强关联电子 · 物理学 2024-11-19 Jaewon Kim , Ehud Altman , Shubhayu Chatterjee

We demonstrate that electron wave functions change their dimensionality at some commensurate directions of a magnetic field in conductors with open [quasi-one-dimensional (Q1D)] sheets of Fermi surface. These 1D -> 2D dimensional crossovers…

超导电性 · 物理学 2009-11-10 A. G. Lebed , Heon-Ick Ha , M. J. Naughton

We report an electrical transport study in Ca$_{2-x}$Sr$_{x}$RuO$_4$ single crystals at high magnetic fields ($B$). For $x =0.2$, the Hall constant $R_{xy}$ decreases sharply at an anisotropic metamagnetic (MM) transition reaching its value…

强关联电子 · 物理学 2009-11-11 L. Balicas , S. Nakatsuji , D. Hall , H. Lee , Z. Fisk , Y. Maeno , D. J. Singh

We have studied the magnetotransport properties of a Sb$_2$Se$_2$Te single crystal. Magnetoresistance (MR) is maximum when the magnetic field is perpendicular to the sample surface and reaches to a value of 1100\% at $B$=31 T with no sign…

介观与纳米尺度物理 · 物理学 2017-09-27 K. Shrestha , V. Marinova , D. Graf , B. Lorenz , C. W. Chu

The radio frequency (RF) response of La1-xSrxMnO3 single crystals reveal a variety of features associated with the structural, electronic and magnetic properties of the system. The resonance technique operating at ~ 4 MHz employed in this…

凝聚态物理 · 物理学 2007-05-23 H. Srikanth , B. Revcolevschi , S. Sridhar , L. Pinsard , A. Revcolevschi

I have successfully prepared (110) trilayers of \LSMO-\YBCO-\LSMO. Magnetization measurements on these samples reveal a stronger coupling between the ferromagnetic layers. The coupling is an order of magnitude higher than that seen in the…

超导电性 · 物理学 2010-03-09 Soumen Mandal

Materials that exhibit colossal magnetoresistance (CMR) are currently the focus of an intense research effort, driven by the technological applications that their sensitivity lends them to. Using the angular correlation of photons from…

强关联电子 · 物理学 2009-10-31 E. A. Livesay , R. N. West , S. B. Dugdale , G. Santi , T. Jarlborg

We have investigated the magnetoresistance (MR) and Hall resistivity properties of the single crystals of tantalum sulfide, Ta3S2, which was recently predicted to be a new type II Weyl semimetal. Large MR (up to ~8000% at 2 K and 16 T),…

材料科学 · 物理学 2016-11-11 D. Chen , L. X. Zhao , J. B. He , H. Liang , S. Zhang , C. H. Li , L. Shan , C. Ren , S. C. Wang , Z. A. Ren , G. F. Chen

In-plane and out-of-plane magnetoresistivities (MR) of antiferromagnetic YBa_2Cu_3O_6.25 single crystals were measured in magnetic fields H applied along the (ab) plane. In-plane MR is a superposition of two components: The first component…

超导电性 · 物理学 2009-11-07 E. Cimpoiasu , C. C. Almasan , A. P. Paulikas , B. W. Veal

Topologically non-trivial nodes emerging from flat-band crossings not only enhance unconventional topological responses but also play a fundamental role in exploring correlation-driven topological physics. Here, we report the exceptionally…

The (111)-oriented 4d ferromagnetic perovskite SrRuO3 (SRO) offers a unique triangular-lattice geometry, making it a promising platform for exploring Berry-curvature-driven and spin-orbit-coupled transport. Here, we present a systematic…

The behavior of charge density wave (CDW) in an external magnetic field is dictated by both orbital and Pauli (Zeeman) effects. A quasi-one-dimensional (Q1D) system features Q1D Fermi surfaces that allow these effects to be distinguished,…

强关联电子 · 物理学 2018-11-15 Jiaming He , Libin Wen , Yueshen Wu , Jinyu Liu , Guoxiong Tang , Yusen Yang , Hui Xing , Zhiqiang Mao , Hong Sun , Ying Liu

The crystalline structure, anisotropic magnetoresistance (AMR), and magnetization of La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) superlattices grown by an rf sputtering system are systematically analyzed to study the spin polarization of manganite at…

强关联电子 · 物理学 2015-06-25 L. M. Wang

In this work, we study the anisotropic magnetoresistance (AMR) behavior of [001] epitaxial Fe65Co35 thin films along different crystallographic directions as a function of temperature. The AMR ratio is found to strongly depend on the…

Magnetoresistance (MR) in the out-of-plane resistivity $\rho_c$ for the normal state of the one-layer high-quality Bi_2Sr_2CuO_x single crystals under various dc magnetic fields up to 28 T over the temperature region 6-100 K has been…

超导电性 · 物理学 2007-05-23 S. I. Vedeneev , A. G. M. Jansen , B. A. Volkov , P. Wyder

We investigate the spin Hall magnetoresistance (SMR) at room temperature in thin film heterostructures of antiferromagnetic, insulating, (0001)-oriented alpha-Fe2O3 (hematite) and Pt. We measure their longitudinal and transverse…

Magneto-resistance (MR) of Bi$_2$Se$_3$ nanoribbons is studied over a broad range of temperature ($T$=300K-2K) and under various magnetic field ($B$) orientations. The MR is strongly anisotropic with the perpendicular MR much larger than…

介观与纳米尺度物理 · 物理学 2011-12-19 Hao Tang , Dong Liang , Richard L. J. Qiu , Xuan P. A. Gao