With weak interlayer interactions and unique physical properties, bismuth oxyselenide (Bi 2
O 2 Se) has become a rising star as a novel quasi-2D material, possessing high symmetry …

Atomically 2D layered ferroelectric semiconductors, in which the polarization switching
process occurs within the channel material itself, offer a new material platform that can drive …

Lead halide perovskites (LHPs) have emerged as an excellent class of semiconductors for
next-generation solar cells and optoelectronic devices. Tailoring physical properties by fine …

Thermochromism, the change in color of a material with temperature, is the fundamental
basis of optical thermometry. A longstanding challenge in realizing sensitive optical …

In the presence of a high magnetic field, quantum Hall systems usually host both even-and
odd-integer quantized states because of lifted band degeneracies. Selective control of these …

Ferroelectricity in solar cells is credited with a multitude of benefits, including improved
charge carrier separation and higher than band gap device voltages, however most …

Ternary nitride semiconductors are rapidly emerging as a promising class of materials for
energy conversion applications, offering an appealing combination of strong light absorption …

The development of two-dimensional (2D) electronics is always accompanied by the
discovery of 2D semiconductors with high mobility and specific crystal structures, which may …

Elucidating transport mechanisms is crucial for advancing material design, yet state-of-the-
art theory is restricted to exact simulations of small lattices with severe finite-size effects or …

We report the direct observation of lattice phonons confined at LaAlO3/SrTiO3 (LAO/STO)
interfaces and STO surfaces using the sum-frequency phonon spectroscopy. This interface …