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Related papers: Hall measurement of ultra thin vanadium dioxide th…

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Insulator-to-metal (MI) phase transition in vanadium dioxide (VO2) thin films with controlled lattice distortion was investigated by thermopower measurements. VO2 epitaxial films with different crystallographic orientations, grown on (0001)…

Strongly Correlated Electrons · Physics 2015-07-15 Takayoshi Katase , Kenji Endo , Hiromichi Ohta

We fabricate van der Waals heterostructure devices using few unit cell thick Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ for magnetotransport measurements. The superconducting transition temperature and carrier density in atomically thin samples can…

We investigated the transport properties under magnetic fields of up to 9 T for FeSe$_{1-x}$Te$_x$ thin films on CaF$_2$. Measurements of the temperature dependence of the electrical resistivity revealed that for $x = 0.2 - 0.4$, where…

Superconductivity · Physics 2016-08-05 Yuichi Sawada , Fuyuki Nabeshima , Yoshinori Imai , Atsutaka Maeda

We have measured the magnetotransport properties and Hall effect of a series of epitaxial NbN films grown on (100) oriented single crystalline MgO substrate under different conditions using reactive magnetron sputtering. Hall effect…

Superconductivity · Physics 2008-06-05 S. P. Chockalingam , Madhavi Chand , John Jesudasan , Vikram Tripathi , Pratap Raychaudhuri

This paper addresses the effect of disorder on the carrier transport mechanism of atomic layer deposited ZnO thin films as has been investigated by temperature dependent electrical resistivity measurements in the temperature range of 4.2K…

Materials Science · Physics 2013-01-08 D. Saha , Amit. K. Das , R. S. Ajimsha , P. Misra , L. M. Kukreja

Selenium is an elemental semiconductor with a wide bandgap suitable for a range of optoelectronic and solar energy conversion technologies. However, developing such applications requires an in-depth understanding of the fundamental material…

Vanadium silicide (V$_3$Si) is a promising superconductor for integration with silicon-based electronics, however the interfacial growth kinetics have a strong influence on the resulting superconducting properties and are not yet fully…

The thermal radiative near field transport between vanadium dioxide and silicon oxide at submicron distances is expected to exhibit a strong dependence on the state of vanadium dioxide which undergoes a metal-insulator transition near room…

Impedance spectroscopy measurements were performed in high quality Vanadium dioxide (VO2) thin films. This technique allows us investigate the resistive and capacitive contribution to the dielectric response near the metal-insulator…

Materials Science · Physics 2011-05-24 J. -G. Ramírez , Edgar J. Patiño , Rainer Schmidt , Amos Sharoni , M. E. Gómez , Ivan K. Schuller

We have made a detailed temperature-dependent photoemission study of VO_2/TiO_2(001) thin films, which show a metal-insulator transition at \sim 300 K. Clean surfaces were obtained by annealing the films in an oxygen atmosphere. Spectral…

Strongly Correlated Electrons · Physics 2009-11-10 K. Okazaki , H. Wadati , A. Fujimori , M. Onoda , Y. Muraoka , Z. Hiroi

We systematically investigated the temperature behaviors of the electrical conductivity and Hall coefficient of two series of amorphous indium gallium zinc oxides (a-IGZO) films prepared by rf sputtering method. The two series of films are…

Mesoscale and Nanoscale Physics · Physics 2018-02-14 Hui Zhang , Xin-Jian Xie , Xin-Hua Zhang , Zhi-Qing Li

We report on a combined structural and magnetotransport study of Hall bar devices of various lateral dimensions patterned side-by-side on epitaxial PdCoO$_2$ thin films. We study the effects of both the thickness of the PdCoO$_2$ film and…

Ta-doped SnO$_2$ films with high conductivity and high optical transparency have been successfully fabricated using rf-sputtering method and their electrical transport properties have been investigated. All films reveal degenerate…

Disordered Systems and Neural Networks · Physics 2022-02-17 Zong-Hui Gao , Zi-Xiao Wang , Dong-Yu Hou , Xin-Dian Liu , Zhi-Qing Li

The study of subtle effects on transport in semiconductors requires high-quality epitaxial structures with low defect density. Using hybrid molecular beam epitaxy (MBE), SrTiO$_3$ films with low-temperature mobility exceeding 42,000…

Disorder driven superconductor to insulator transition via intermediate metallic regime is reported in nano-crystalline thin films of molybdenum. The nano-structured thin films have been deposited at room temperature using DC magnetron…

Superconductivity · Physics 2017-04-03 Shilpam Sharma , E. P. Amaladass , Neha Sharma , V. Harimohan , S. Amirthapandian , Awadhesh Mani

Using the Drude-Boltzmann semiclassical transport theory, we calculate the weak-field Hall resistance of a two-dimensional system at low densities and temperatures, assuming carrier scattering by screened random charged impurity centers.…

Disordered Systems and Neural Networks · Physics 2009-11-10 S. Das Sarma , E. H. Hwang

In this work we report on Hall effect, resistivity and thermopower measurements in n-type indium selenide at room temperature under either hydrostatic and quasi-hydrostatic pressure. Up to 40 kbar (= 4 GPa), the decrease of carrier…

Condensed Matter · Physics 2009-10-28 D. Errandonea , A. Segura , J. F. Sánchez-Royo , V. Muñoz , P. Grima , A. Chevy , C. Ulrich

We performed terahertz magneto-optical spectroscopy of FeSe thin film to elucidate the charge carrier dynamics. The measured diagonal (longitudinal) and off-diagonal (Hall) conductivity spectra are well reproduced by two-carrier Drude…

This work reports on temperature-induced out-diffusion and concentration decay of the prominent intrinsic point defect VNi (nickel vacancy) in the wide-gap p-type semiconductor nickel oxide (NiO). VNi can easily be introduced into NiO thin…

Materials Science · Physics 2020-04-08 Robert Karsthof , Arthur Markus Anton , Friedrich Kremer , Marius Grundmann

We report the transport characteristics of both electrons and holes through narrow constricted crystalline Si "wall-like" long-channels that were surrounded by a thermally grown SiO2 layer. Importantly, as a result of the existence of fixed…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 C. S. Mayberry , Danhong Huang , G. Balakrishnan , C. Kouhestani , N. Islam , S. R. J. Brueck , A. K. Sharma