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This article is devoted to the problem of the validity of the reciprocity theorem in high-temperature superconductors (HTSC). The violation of the reciprocity theorem in zero external magnetic fields has been studied. Experimental data…

超导电性 · 物理学 2009-11-07 I. Janeček , P. Vašek

Employing a new experimental technique to measure magnetoelectric response functions, we have measured the magnetoelectric effect in composite films of nano granular metallic iron in anatase titanium dioxide at temperatures below 50 K. A…

材料科学 · 物理学 2009-11-13 S. D. Yoon , C. Vittoria , V. G. Harris , A. Widom , Y. N. Srivastava

In this work, the investigation of magnetic proximity effect was extended to Ta which has been reported to have a negative spin Hall angle. Magnetoresistance and Hall measurements for in-plane and out-of-plane applied magnetic field sweeps…

介观与纳米尺度物理 · 物理学 2015-06-17 Yumeng Yang , Baolei Wu , Kui Yao , Santiranjan Shannigrahi , Baoyu Zong , Yihong Wu

Electrical, magnetic and galvanomagnetic properties of half-metallic Heusler alloys of Co$_2$YZ (Y = Ti, V, Cr, Mn, Fe, Ni, and Z = Al, Si, Ga, Ge, In, Sn, Sb) were studied in the temperature range 4.2--900 K and in magnetic fields of up to…

材料科学 · 物理学 2018-05-09 V. V. Marchenkov , Yu. A. Perevozchikova , N. I. Kourov , V. Yu. Irkhin , M. Eisterer , T. Gao

Thin films of the high-temperature superconductor HgBa$_2$CaCu$_2$O$_{6+\delta}$ have been prepared on SrTiO$_3$ substrates by pulsed-laser deposition of precursor films and subsequent annealing in mercury-vapor atmosphere. The…

超导电性 · 物理学 2021-02-11 H. Richter , W. Lang , M. Peruzzi , H. Hattmansdorfer , J. H. Durrell , J. D. Pedarnig

By using a two-step method, we successfully synthesized the iron based new superconductor LaFeAsO_{0.9}F_{0.1-\delta}$. The resistive transition curves under different magnetic fields were measured, leading to the determination of the upper…

超导电性 · 物理学 2008-09-08 Xiyu Zhu , Huan Yang , Lei Fang , Gang Mu , Hai-Hu Wen

The Hall conductivity and resistivity of strongly localized electrons at low temperatures and at small magnetic fields are obtained. It is found that the results depend on whether the conductivity or the resistivity tensors are averaged to…

凝聚态物理 · 物理学 2009-10-28 O. Entin-Wohlman , A. G. Aronov , Y. Levinson , Y. Imry

The component of the resistivity tensor $\rho_{ij}$ corresponding to voltage transverse to both an applied current and a magnetic field can be separated into odd and even parts with respect to the applied magnetic field. The former contains…

Hall effect and magnetoresistance have been measured on single crystals of $NdFeAsO_{1-x}F_{x}$ with x = 0 ($T_c$ = 0 $ $K) and x = 0.18 ($T_c$ = 50 $ $K). For the undoped samples, strong Hall effect and magnetoresistance with strong…

超导电性 · 物理学 2009-11-13 Peng Cheng , Huan Yang , Ying Jia , Lei Fang , Xiyu Zhu , Gang Mu , Hai-Hu Wen

The temperature dependence of the normal state Hall effect and magnetoresistance in YBa$_2$Cu$_3$O$_7$ is investigated using the Nearly Antiferromagnetic Fermi Liquid description of planar quasiparticles. We find that highly anisotropic…

凝聚态物理 · 物理学 2009-10-28 Branko P. Stojkovic , David Pines

We have measured the planar Hall effect in epitaxial thin films of the itinerant ferromagnet SrRuO3 patterned with their current paths at different angles relative to the crystallographic axes. Based on the results, we have determined that…

其他凝聚态物理 · 物理学 2015-06-25 Isaschar Genish , Lior Klein , James W. Reiner , M. R. Beasley

We report measurements of the temperature dependent components of the magnetic penetration depth {\lambda}(T) in single crystal samples of YBa_2Cu_4O_8 using a radio frequency tunnel diode oscillator technique. We observe a downturn in…

超导电性 · 物理学 2010-10-22 A. Serafin , J. D. Fletcher , S. Adachi , N. E. Hussey , A. Carrington

Based on a thermodynamic approach, we have calculated the resistivity of a 2D electron gas, assumed $dissipationless$ in a strong quantum limit. Standard measurements, with extra current leads, define the resistivity caused by a combination…

介观与纳米尺度物理 · 物理学 2009-11-07 M. V. Cheremisin

Interlayer tunneling measurements in the strongly correlated bilayer quantized Hall phase at $\nu_T=1$ are reported. The maximum, or critical current for tunneling at $\nu_T=1$, is shown to be a well-defined global property of the coherent…

强关联电子 · 物理学 2013-10-22 D. Nandi , T. Khaire , A. D. K. Finck , J. P. Eisenstein , L. N. Pfeiffer , K. W. West

Electrical resistivity, magnetoresistivity, and the Hall effect have been studied in a topological semimetal WTe2 single crystal in the temperature range from 12 to 200 K under magnetic fields up to 9 T. It has been found that quadratic…

Measurements of the Hall effect and the resistivity in twinned YBa2Cu3O7-delta thin films in magnetic fields B oriented parallel to the crystallographic c-axis and to the twin boundaries reveal a double sign reversal of the Hall coefficient…

超导电性 · 物理学 2017-06-27 W. Goeb , W. Liebich , W. Lang , I. Puica , Roman Sobolewski , R. Roessler , J. D. Pedarnig , D. Baeuerle

Hall resistance $R_{\textrm{xy}}$ is commonly suggested to be linear-in-magnetic-field $B$, provided the field is small. We argue here that at low temperatures this linearity is broken due to weak localization/antilocalization phenomena in…

介观与纳米尺度物理 · 物理学 2020-11-17 A. Yu. Kuntsevich , A. V. Shupletsov , A. L. Rakhmanov

In correlated electronic systems, strong interactions and the interplay between different degrees of freedom may give rise to anomalous charge transport properties, which can be tuned by external parameters like temperature and magnetic…

The Hall resistivity, electrical resistivity and magnetization of single crystals of the tetragonal ferromagnet Yb14MnSb11 are reported as a function of the direction of the current, I, and magnetic field, H with respect to the principal…

强关联电子 · 物理学 2009-11-13 Brian C. Sales , Rongying Jin , David Mandrus

The transverse (Hall) voltage in thin films of the high-temperature superconductor YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ with an artificial periodic pinning array is investigated. Columnar defect regions along the crystallographic $c$ axis, in…