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An electrical study of thin $VO_{2}$ films in the vicinity of the structural phase transition at $68^{0}C$ shows (a) that the electrical resistance $R$ follows $log (R)$ $\propto$ $-T$ over the $T$-range, $20 < T < 80 ^{0}C$ covering both…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 R. G. Mani , S. Ramanathan

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…

The temperature and electrical field dependent conductivity of n-type CdSe nanocrystal thin films is investigated. In the low electrical field regime, the conductivity follows G ~ exp(-(T*/T)^0.5) in the temperature range 10K<T<120K. At…

Materials Science · Physics 2009-11-10 Dong Yu , Congjun Wang , Brian L. Wehrenberg , Philippe Guyot-Sionnest

We study the temperature dependence of the conductivity of the 2D electronic solid. In realistic samples, a domain structure forms in the solid and each domain randomly orients in the absence of the in-plane field. At higher temperature,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Shi-Jie Yang , Yue Yu

In this letter we report and investigate the temperature dependency of various radio frequency parameters (RF) for a fabricated reconfigurable bandstop filter with vanadium dioxide (VO2) switches measured up to 55 GHz. Here the insulator to…

Applied Physics · Physics 2020-10-27 Andrei A. Muller , Matteo Cavalieri , Adrian M. Ionescu

We present results of electrical conduction studies of Ti/TiOx/Ti planar structures prepared by tip-induced local anodic oxidation (LAO) of titanium thin films. The prepared structures have shown almost linear I-V curves at temperatures…

Materials Science · Physics 2020-11-09 Marianna Batkovaa , Ivan Batko

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 studied electrical resistance of a single-crystalline SmB6 sample with a focus on the region of the "low-temperature resistivity plateau". Our observations did not show any true saturation of the electrical resistance at temperatures…

Strongly Correlated Electrons · Physics 2017-09-08 Marianna Batkova , Ivan Batko , Slavomir Gabani , Emil Gazo , Elena Konovalova , Vladimir Filippov

Vanadium dioxide is a correlated electron system that features a metal-insulator phase transition (MIT) above room temperature and is of interest in high speed switching devices. Here, we integrate VO2 into two-terminal coplanar waveguides…

Materials Science · Physics 2013-06-04 Sieu D. Ha , You Zhou , Christopher J. Fisher , Shriram Ramanathan , Jacob P. Treadway

The effect of doping with hydrogen on the electrical properties of vanadium oxide is studied. For vanadium oxide films, subject to cold hydrogen plasma treatment, the temperature dependence of resistance with a maximum at T ~ 100 K is…

Superconductivity · Physics 2008-12-17 Alex Pergament , Nik Kuldin

Multiwalled carbon nanotubes are shown to be ballistic conductors at room temperature, with mean free paths of the order of tens of microns. These experiments follow and extend the original experiments by Frank et al (Science, 280 1744…

Materials Science · Physics 2007-05-23 Philippe Poncharal , Claire Berger , Yan Yi , Z. L. Wang , Walt A. de Heer

We study the electric conductivity of hot QCD matter at various temperatures T within the off-shell parton-hadron-string dynamics transport approach for interacting partonic, hadronic or mixed systems in a finite box with periodic boundary…

High Energy Physics - Phenomenology · Physics 2013-10-25 W. Cassing , O. Linnyk , T. Steinert , V. Ozvenchuk

Epitaxial SrTi1-xVxO3 thin films with thicknesses of ~16 nm were grown on (001)-oriented LSAT substrates using the pulsed electron-beam deposition technique. The transport study revealed a temperature driven metal-insulator transition (MIT)…

Strongly Correlated Electrons · Physics 2015-06-17 Man Gu , Stuart A. Wolf , Jiwei Lu

Variable temperature scanning tunneling microscopy/spectroscopy studies on (110) oriented epitaxial thin films of La$_{0.350}$Pr$_{0.275}$Ca$_{0.375}$MnO$_3$ are reported in the temperature range of 77 to 340 K. The films, grown on lattice…

Strongly Correlated Electrons · Physics 2009-11-13 Udai Raj Singh , S. Chaudhuri , Shyam K. Choudhary , R. C. Budhani , Anjan K. Gupta

Electrical and optical properties of amorphous vanadium oxide thin films obtained by electrochemical anodic oxidation are studied. It is shown that under cathodic polarization the hydrogen insertion into vanadium oxide from an electrolyte…

Phase transition materials are promising for realization of switchable optics. In this work, we show reflectance resonances in the near-infrared and long-wave infrared wavelengths in highly subwavelength partially oxidized Vanadium thin…

Optics · Physics 2022-08-30 Ashok P , Yogesh Singh Chauhan , Amit Verma

We show that electron--electron scattering gives a positive contribution to the resistivity of ballistic multimode wires whose width is much smaller than their length. This contribution is not exponentially small at low temperatures and…

Mesoscale and Nanoscale Physics · Physics 2012-04-09 K. E. Nagaev , N. Yu. Sergeeva

We have studied electrical switching with S-shaped I-V characteristics in two-terminal MOM devices based on vanadium dioxide thin films. The switching effect is associated with the metal-insulator phase transition. Relaxation oscillations…

Applied Physics · Physics 2020-01-08 Alexander Pergament , Andrei Velichko , Maksim Belyaev , Vadim Putrolaynen

In the present study, we demonstrate a vacuum thermal switch based on near-field thermal radiation between phase transition materials, i.e., vanadium dioxide (VO2), whose phase changes from insulator to metal at 341 K. Similar modulation…

Mesoscale and Nanoscale Physics · Physics 2014-12-30 Yue Yang , Soumyadipta Basu , Liping Wang

Thermochromic vanadium dioxide thin films have attracted much attention recently for constructing variable-emittance coatings upon its insulator-metal phase transition for dynamic thermal control. However, fabrication of high-quality…

Materials Science · Physics 2025-05-20 Vishwa Krishna Rajan , Jeremy Chao , Sydney Taylor , Liping Wang
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