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We have demonstrated the existence of the Morin transition in epitaxially grown hematite thin films exceeding a critical thickness. The Morin transition temperature can be suppressed by magnetic fields applied both parallel and…

Materials Science · Physics 2025-04-08 Haoyu Liu , Hantao Zhang , Josiah Keagy , Qinwu Gao , Letian Li , Junxue Li , Ran Cheng , Jing Shi

Temperature dependent Ferromagnetic Resonance measurements performed as a function of diameter on Nickel nanowire arrays reveal several interesting features in these systems. With diameter decrease from 100 nm to 15 nm, a transition induced…

Materials Science · Physics 2015-03-13 C. Tannous , A. Ghaddar , J. Gieraltowski

The phonon thermal conductivity in diamond nanowires (DNW) is studied by molecular dynamics simulation. It is found that the thermal conductivity in narrower DNW is lower and does not show obvious temperature dependence; a very small value…

Materials Science · Physics 2011-08-31 Jin-Wu Jiang , Bing-Shen Wang , Jian-Sheng Wang

Dimensional dependence of thermal conductance at low temperatures in nanowires is studied using the nonequilibrium Green's function (NEGF) method. Our calculation shows a smooth dimensional crossover of thermal conductance in nanowire from…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jian Wang , Jian-Sheng Wang

We compute atomistically the heat conductance for ultra-thin pristine silicon nanowires (SiNWs) with diameters ranging from 1 to 5 nm. The room temperature thermal conductance is found to be highly anisotropic: wires oriented along the…

Materials Science · Physics 2009-01-09 Troels Markussen , Antti-Pekka Jauho , Mads Brandbyge

Antiferromagnetic materials can host spin-waves with polarizations ranging from circular to linear depending on their magnetic anisotropies. Until now, only easy-axis anisotropy antiferromagnets with circularly polarized spin-waves were…

Intrinsic two-dimensional magnets serve as a good platform to explore collective, charge-neutral and low-energy excitations. Distinguishing the crucial role of them in experimental aspect remains a challenge for decades. Here, we study the…

We report measurements of electronic, thermoelectric, and galvanomagnetic properties of individual single crystal antimony telluride (Sb2Te3) nanowires with diameters in the range of 20-100 nm. Temperature dependent resistivity and…

Mesoscale and Nanoscale Physics · Physics 2010-08-16 Y. M. Zuev , J. S. Lee , C. Galloy , H. Park , P. Kim

The resistivity as a function of temperature, magnetic field and its orientation for atomically flat SrTiO3\LaAlO3 interfaces with carrier densities of ~3*10^13 cm^-2 is reported. At low magnetic fields superconductivity is observed below…

Strongly Correlated Electrons · Physics 2010-03-26 M. Ben Shalom , C. W. Tai , Y. Lereah , M. Sachs , E. Levy , D. Rakhmilevitch , A. Palevski , Y. Dagan

We have investigated anomalous Hall effect and magnetoresistance in a noncentrosymmetric itinerant magnet Cr$_{11}$Ge$_{19}$. While the temperature- and magnetic-field-dependent anomalous Hall conductivity is just proportional to the…

Strongly Correlated Electrons · Physics 2017-11-01 N. Jiang , Y. Nii , R. Ishii , Z. Hiroi , Y. Onose

The magnetotransport in phase-separated (Ga,Fe)N containing $\gamma$'-Ga$_y$Fe$_{4-y}$N (0\,$<$\,y\,$<$1) nanocrystals (NCs) is studied in the temperature range between 2\,K and 300\,K. The evolution of the resistivity and of the…

Materials Science · Physics 2020-01-08 A. Navarro-Quezada , M. Aiglinger , B. Faina , K. Gas , M. Matzer , Tian Li , R. Adhikari , M. Sawicki , A. Bonanni

The magnitude of the anisotropic magnetoresistance (AMR) and the longitudinal resistance in compressively strained (Ga0.95, Mn0.05)As epilayers were measured for the first time down to temperatures as low as 30 mK. Below temperatures of 3K…

Other Condensed Matter · Physics 2009-11-13 J. Honolka , S. Masmanidis , H. X. Tang , D. D. Awschalom , M. L. Roukes

We investigate the temperature dependence of the intrinsic anomalous Hall conductivity in Fe$_3$Ge, which is a ferromagnetic topological metal. We observe a significant anisotropy in the anomalous Hall conductivity between in-plane and…

Materials Science · Physics 2025-07-18 Susanta Ghosh , Tushar Kanti Bhowmik , Achintya Low , Setti Thirupathaiah

We study the fluctuation conductivity of a superconducting film, which is placed to perpendicular non-uniform magnetic field with the amplitude $H_0$ induced by the ferromagnet with domain structure. The conductivity tensor is shown to be…

Superconductivity · Physics 2015-06-11 S. V. Mironov , A. S. Mel'nikov

The magneto-conductance of an InAs nanowire is investigated with respect to the relative orientation between external magnetic field and the nanowire axis. It is found that both the perpendicular and the parallel magnetic fields induce a…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Dong Liang , Juan Du , Xuan P. A. Gao

The thermal conductivities of beta-Ga2O3 single crystals along four different crystal directions were measured in the temperature range of 80-495K using the time domain thermoreflectance (TDTR) method. A large anisotropy was found. At room…

A number of recent studies indicate that the charge conduction of the LaAlO$_3$/SrTiO$_3$ interface at low temperature is confined to filaments which are linked to structural domain walls in the SrTiO$_3$ with drastic consequences for…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 M. S. Prasad , G. Schmidt

Artificial multiferroics consist of two types of ferroic materials, typically a ferroelectric and ferromagnet, often coupled interfacially by magnetostriction induced by the lattice elongations in the ferroelectric. In BaTiO3 the magnitude…

We report measurements of the temperature-dependent anisotropic resistivity and in-plane magnetoresistance on single crystals of the tetragonal heavy-fermion antiferromagnet (TN = 3.8 K) CeRhIn5. The measurements are reported in the…

Strongly Correlated Electrons · Physics 2009-11-07 A. D. Christianson , A. Lacerda , M. F. Hundley , P. G. Pagliuso , J. L. Sarrao

Fluorite oxides are attractive ionic compounds for a range of applications with critical thermal management requirements. In view of recent reports alluding to anisotropic thermal conductivity in this face-centered cubic crystalline…

Materials Science · Physics 2023-06-07 Saqeeb Adnan , Miaomiao Jin , Matthew S Bryan , Michael E Manley , David H. Hurley , Marat Khafizov
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