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Related papers: Pulse width controlled resistivity switching at ro…

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Pulse-width modulation is a nice way to create pseudo analog outputs from a microcontroller (eg, an Arduino), which is limited to digital output signals. The quality of the analog output signal depends on the filter one uses to average out…

Physics Education · Physics 2018-07-31 Nathan T Moore

Anisotropic resistivities of Bi_2Sr_2Ca_{1-x}Er_xCu_2O_8 single crystals were measured and analyzed from 4.2 to 500 K with special interest in the parent antiferromagnetic insulator of x=1.0. Although the resistivity is semiconducting along…

Superconductivity · Physics 2009-10-31 T. Kitajima , T. Takayanagi , T. Takemura , I. Terasaki

Following optical pulses ($\lambda=405~\text{nm}$) on titanium nitride (TiN) Microwave Kinetic Inductance Detectors (MKIDs) cooled down at temperatures $T \le T_c / 20$ ($T_c \simeq 4.6~\text{K}$), we observe a large phase-response…

Instrumentation and Methods for Astrophysics · Physics 2021-12-08 Jie Hu , Faouzi Boussaha , Jean-Marc Martin , Paul Nicaise , Christine Chaumont , Samir Beldi , Michel Piat , Piercarlo Bonifacio

This paper reports on experimental measurements of the gas temperature in a dielectric barrier discharge reactor powered by a high voltage pulsed signal. It is shown that the thermal behavior of the reactor follows a first order model.…

Plasma Physics · Physics 2018-07-11 Hamou Sadat , Nicolas Dubus , Jean Michel Tatibouët

Following the recent discovery of large magnetoresistance at room temperature in polyfluorence sandwich devices, we have performed a comprehensive magnetoresistance study on a set of organic semiconductor sandwich devices made from…

We present a method for in-situ tuning the critical current (or switching current) and critical temperature of a superconducting nanowire using high bias voltage pulses. Our main finding is that as the pulse voltage is increased, the…

Mesoscale and Nanoscale Physics · Physics 2011-01-28 Thomas Aref , Alexey Bezryadin

Simultaneous observations at four different frequencies viz. 313, 607, 1380 and 4850 MHz, for three pulsars, PSRs B0031-07, B0809+74 and B2319+60, are reported in this paper. Identified null and burst pulses are highly concurrent across…

Solar and Stellar Astrophysics · Physics 2015-06-22 Vishal Gajjar , Bhal Chandra Joshi , Michael Kramer , Ramesh Karuppusamy , Roy Smits

A heterojunction-like device consisting of FTO/CeO2/electrolyte/FTO is established with distinct transport performance, where FTO denotes F-doped transparent conducting glass, and the electrolyte is LiI and I2 in acetonitrile. The resistive…

Chemical Physics · Physics 2012-11-22 Xiaoqi Wang , Chuanbing Cai

The reversal of the magnetization under the influence of a field pulse has been previously predicted to be an incoherent process with several competing phenomena such as domain wall relaxation, spin wave-mediated instability regions, and…

We present high-quality observations of PSR B0826-34 at 1374 MHz. The emission from this pulsar exhibits strong bursts of pulses followed by long periods of `null' pulses. When it is strong, the radiation extends through the whole pulse…

Astrophysics · Physics 2009-11-10 A. Esamdin , A. G. Lyne , F. Graham-Smith , M. Kramer , R. N. Manchester , X. Wu

The longitudinal and transverse voltages (resistances) have been measured for MgB$_2$ in zero external magnetic fields. Samples were prepared in the form of thin film and patterned into the usual Hall bar shape. In close vicinity of the…

Superconductivity · Physics 2009-11-10 P. Vasek

We study the effects of temperature on the band structure of the Bi$_2$Se$_3$ family of topological insulators using first-principles methods. Increasing temperature drives these materials towards the normal state, with similar…

Materials Science · Physics 2016-11-30 Bartomeu Monserrat , David Vanderbilt

We report a highly unusual temperature dependence in the magnetoresistance of a weakly interacting high mobility 2D electron gas (2DEG) under a parallel magnetic field and when the current is perpendicular to the field. While the linear…

Mesoscale and Nanoscale Physics · Physics 2012-02-06 Xiaoqing Zhou , B. Schmidt , L. W. Engel , G. Gervais , L. N. Pfeiffer , K. W. West , S. Das Sarma

As a room-temperature multiferroic, BiFeO3 has been intensively investigated for both magnetoelectric devices and non-volatile ferroelectric memory applications. Both magnetoelectric and ferroelectric memory devices have the same control…

We present designs for the augmentation 'mirror' pulses of large-momentum-transfer atom interferometers that maintain their fidelity as the wavepacket momentum difference is increased. These bi-selective pulses, tailored using optimal…

Atomic Physics · Physics 2020-07-01 Jack Saywell , Max Carey , Ilya Kuprov , Tim Freegarde

We report an experimental setup for simultaneously measuring specific heat and thermal conductivity in feedback-controlled pulsed magnetic fields of 50 msec duration at cryogenic temperatures. A stabilized magnetic field pulse obtained by…

We report on an ultrafast photoinduced phase transition with a strikingly long-lived Martensitic anomaly driven by above-threshold single-cycle terahertz (THz) pulses in Nb$_3$Sn. A non-thermal, THz-induced depletion of low frequency…

Strongly Correlated Electrons · Physics 2020-08-21 X. Yang , B. Song , C. Vaswani , L. Luo , C. Sundahl , M. Mootz , J-H. Kang , Y. Yao , K-M Ho , I. E. Perakis , C. B. Eom , J. Wang

We present a pulsing protocol that significantly increases the endurance of a titanium-manganite interface used as a binary memory cell. The core of this protocol is an algorithm that searches for the proper values for the set and reset…

Materials Science · Physics 2015-05-27 F. Gomez-Marlasca , N. Ghenzi , P. Stoliar , M. J. Sánchez , M. J. Rozenberg , G. Leyva , P. Levy

Knowledge of the electronic band structure of multiferroic oxides, crucial for the understanding and tuning of photo-induced effects, remains very limited even in the model and thoroughly studied BiFeO3. Here, we investigate the electronic…

Scaling information bits to ever smaller dimensions is a dominant drive for information technology (IT). Nanostructured phase change material emerges as a key player in the current green-IT endeavor with low power consumption, functional…

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