Results 91 to 100 of about 8,327 (239)

Spin relaxation in low-dimensional systems

, 1999
We review some of the newest findings on the spin dynamics of carriers and excitons in GaAs/GaAlAs quantum wells. In intrinsic wells, where the optical properties are dominated by excitonic effects, we show that exciton-exciton interaction produces a ...
Aichmayr G, Aronov A G, Bar-Joseph I, Baylac B, Bir G L, Chao H-S, D'yakonov M I, D'yakonov M I, D'yakonov M I, D'yakonov M I, Dareys B, Dymnikov V D, Fernández-Rossier J, Ferreira R, Ferreira R, Fleisher G, Freeman M R, Gravier L, Gross E F, Hanle W, Ivchenko E L, Johnson E J, L Viña, Marushchak V A, Meier F, Oskotskij B D, Phillips R T, Pikus G E, Pikus G E, Planel R, Prinz G A, Robart D, Sakharov V I, Seymour R, Shah J, Shah J, Sham L J, Sham L J, Sham L J, Stolz H, Titkov A N, van der Poel W A J A, Vekua V B, Viña L, Viña L, Weisbuch C, Yafet Y, Zakharchenya B P, Zakharchenya B P, Zemskii V I   +49 more
core   +1 more source

Gate Enhancing Charge‐Spin Conversion in Organic Chiral Field Effect Transistors

Advanced Science, EarlyView.
Room‐temperature organic chiral multiferroic field effect transistors are demonstrated, enabling bidirectional control between spin and charge. Specifically, spin polarization affects the ferroelectric polarization, and ferroelectric polarization, in turn, can modulate spin polarization and spin‐dependent transport.
Shilin Li, Renjie Hu, Xiangping Zhao, Xi Wang, Wei Qin   +4 more
wiley   +1 more source

Spin dependent photoelectron tunnelling from GaAs into magnetic Cobalt

, 2010
The spin dependence of the photoelectron tunnel current from free standing GaAs films into out-of- plane magnetized Cobalt films is demonstrated. The measured spin asymmetry (A) resulting from a change in light helicity, reaches +/- 6% around zero ...
Allongue, P., Arscott, S., Jurca, H. F., Maroun, F., Paget, D., Peytavit, E., Rowe, A. C. H., Tournerie, N., Vu, D.   +8 more
core   +4 more sources

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

Advanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Interband absorption and luminescence in small quantum dots under strong magnetic fields

, 2000
Interband absorption and luminescence of quasi-two-dimensional, circularly symmetric, N_e electron quantum dots are studied at high magnetic fields ...
Augusto Gonzalez, Chakraborty, Cingolani, Davies, Eduardo Menéndez-Proupin, Finkelstein, Girvin, Hayne, Jain, Kim, Kim, Laughlin, MacDonald, Madelung, Mellor, Palacios, Pinczuk, Roth, Seck, Shields, Shields, Shields, Whittaker, Wojs, Zeitler   +24 more
core   +1 more source

Biobased and biodegradable films exhibiting circularly polarized room temperature phosphorescence

Nature Communications
There is interest in developing sustainable materials displaying circularly polarized room-temperature phosphorescence, which have been scarcely reported.
Mengnan Cao, Yiran Ren, Yue Wu, Jingjie Shen, Shujun Li, Zhen-Qiang Yu, Shouxin Liu, Jian Li, Orlando J. Rojas, Zhijun Chen   +9 more
doaj   +1 more source

Deep Volumetric Super‐Resolution Imaging in Thick Biological Specimens With Sparse Scanning SIM

Advanced Science, EarlyView.
Sparse scanning structured illumination microscopy (SS‐SIM) extends the axial depth in super‐resolution fluorescence imaging by combining rapid laser scanning, pixel‐addressed intensity modulation, and sCMOS camera detection. SS‐SIM yields 1.6× lateral and 1.7× axial resolution gains over wide‐field microscopy and enables imaging through 300–600 µm ...
Sha An, Xuhong Guo, Zhongxia Cai, Yunze Lei, Kai Wen, Hongfei Suo, Xiaoyu Kong, Gerd Ulrich Nienhaus, Peng Gao   +8 more
wiley   +1 more source

Full Hydrodynamic Model of Nonlinear Electromagnetic Response in Metallic Metamaterials

, 2016
Applications of metallic metamaterials have generated significant interest in recent years. Electromagnetic behavior of metamaterials in the optical range is usually characterized by a local-linear response.
Fang, Ming, Huang, Zhixiang, Sha, Wei E. I., Wu, Xianliang, Xiong, Xiaoyan Y. Z.   +4 more
core   +1 more source

Artificial Intelligence Predictions in Huge Chemical Spaces: Chiroptical Properties of [6]‐helicene Family

Advanced Science, EarlyView.
This study shows that a local, data‐driven AI model can accurately predict diverse optical and chiroptical properties of [6]helicenes using information from close structural neighbours. Combined with genetic algorithms, it enables inverse design for tailored properties, establishing practical structure–property rules for efficient molecular discovery ...
Rafael G. Uceda, Sandra Míguez‐Lago, Carlos M. Cruz, Boris Pérez‐Cañedo, Alfonso Gijón, Luis Álvarez de Cienfuegos, Antonio J. Mota, Delia Miguel, Juan M. Cuerva   +8 more
wiley   +1 more source

Magnetic-field-induced crossover from the inverse Faraday effect to the optical orientation in EuTe

, 2018
A time-resolved optical pump-probe technique has been applied for studying the ultrafast dynamics in the magnetic semiconductor EuTe near the absorption band gap. We show that application of external magnetic field up to 6 T results in crossover from the
Abramof, E., Akimov, I. A., Bayer, M., Henriques, A. B., Nefedov, S. G., Pavlov, V. V., Pisarev, R. V., Rappl, P. H. O., Yakovlev, D. R.   +8 more
core   +1 more source