Voltage-driven 180° magnetization switching without electric current provides the possibility for revolutionizing the spintronics. We demonstrated the voltage-driven charge-mediated 180° magnetization switching at room temperature by combining firstprinciples calculations and temperature-dependent magnetization dynamics simulation. The electric field (E)-induced interface charge is found to all...

We present our approach for a consistent, fully quantum mechanical description of the magnetization reversal process in natural and artificial atomic systems by means of short magnetic pulses. In terms of the simplest model of a two-level system with a magnetic moment, we analyze the possibility of a fast magnetization reversal on the picosecond timescale induced by oscillating or short unipola...

The itinerant electron metamagnetism (IEM) is an essential physical concept, describing magnetic properties of rare earth - transition metal (R-TM) intermetallics, demonstrating technologically important giant magnetoresistance and magnetocaloric effects. It considers an appearance of TM magnetization induced by spontaneous magnetization of surrounding R atoms, which provides significant respon...

Relaxation processes on the picosecond and subpicosecond time scale after optical excitation have been studied by time-resolved magnetization-induced second-harmonic generation from ferromagnetic nickel. A fast drop of the second-harmonic intensity and the Kerr-signal within 300 fs after optical excitation has been observed which is followed by a partial recovery within a few picoseconds. We sh...

Very sharp magnetization step is observed across the field induced antiferromagnetic to ferromagnetic transition in various doped-CeFe2 alloys, when the measurement is performed below 5K. In the higher temperature regime (T>5K) this transition is quite smooth in nature. Comparing with the recently observed similar behaviour in manganties showing colossal magnetoresistance and magnetocaloric mat...

We report a technique that is based on exchange-induced remnant magnetization for microRNA (miRNA) detection. In sequence-specific exchange reactions between label-free miRNA and magnetically labelled RNA with one mismatched base, the decrease in magnetization quantitatively represents the target miRNA. The detection limit reaches the zeptomole regime, with no amplification or washing procedure...

At low temperatures, the magnetization of the molecular ferric wheel NaFe6 exhibits a step at a critical field B(c) due to a field-induced level crossing. By means of high-field torque magnetometry we observed a hysteretic behavior at the level crossing with a characteristic butterfly shape which is analyzed in terms of a dissipative two-level model. Several unusual features were found. The non...