Results 101 to 110 of about 62,219 (286)

Bright Single-Photon Source at 1.3 μm Based on InAs Bilayer Quantum Dot in Micropillar

Nanoscale Research Letters, 2017
A pronounced high count rate of single-photon emission at the wavelength of 1.3 μm that is capable of fiber-based quantum communication from InAs/GaAs bilayer quantum dots coupled with a micropillar (diameter ~3 μm) cavity of distributed Bragg reflectors
Ze-Sheng Chen, Ben Ma, Xiang-Jun Shang, Hai-Qiao Ni, Jin-Liang Wang, Zhi-Chuan Niu   +5 more
doaj   +1 more source

Polarization Enhancement in Short Period Superlattices via Interfacial Intermixing

, 2007
The effect of intermixing at the interface of short period PbTiO$_3$/SrTiO$_3$ superlattices is studied using first-principles density functional theory. The results indicate that interfacial intermixing significantly enhances the polarization within the
Cooper, Valentino R., Johnston, Karen, Rabe, Karin M.   +2 more
core   +1 more source

Symmetry‐Driven Unconventional Magnetoelectric Coupling in Perovskite Altermagnets: From Bulk to the Two‐Dimensional Limit

Advanced Science, EarlyView.
The symmetry‐driven coexistence of altermagnetism and (anti)ferroelectricity in perovskites shows a strong dimensional dependence. Upon reducing the system from bulk to the two‐dimensional limit, only C‐type antiferromagnetic order retains ferroelectrically switchable altermagnetism, whereas A‐ and G‐type orders become conventional antiferromagnets ...
Zhou Cui, Ziye Zhu, Xunkai Duan, Bowen Hao, Xianzhang Chen, Jiayong Zhang, Tong Zhou   +6 more
wiley   +1 more source

Landau level splitting due to graphene superlattices

, 2012
The Landau level spectrum of graphene superlattices is studied using a tight-binding approach. We consider non-interacting particles moving on a hexagonal lattice with an additional one-dimensional superlattice made up of periodic square potential ...
Apel, W., Pal, G., Schweitzer, L.
core   +1 more source

Electric‐Current‐Induced Phase Transformation in Cu6Sn5 Below Its Equilibrium Transition Temperature

Advanced Science, EarlyView.
Electric current induces a monoclinic‐to‐hexagonal phase transformation in Cu6Sn5 at a measured bulk temperature of ∼120°C, below the equilibrium transition temperature. Ex situ synchrotron x‐ray diffraction, TEM, and matched thermal controls show that current stressing promotes the formation of a retained hexagonal η‐phase post‐stress state not ...
Shih‐kang Lin, Shubhayan Mukherjee, Yu‐chen Liu, Jun Mizuno   +3 more
wiley   +1 more source

Manipulation of anisotropic Zhang-Rice exciton in NiPS3 by magnetic field

Nature Communications
The effect of external magnetic fields on the behavior of the Zhang-Rice exciton in NiPS3, which captures the physics of spin-orbital entanglement in 2D XY-type antiferromagnets, remains unclear. This study presents systematic study of angle-resolved and
Feilong Song, Yanpei Lv, Yu-Jia Sun, Simin Pang, Haonan Chang, Shan Guan, Jia-Min Lai, Xu-Jie Wang, Bang Wu, Chengyong Hu, Zhiliang Yuan, Jun Zhang   +11 more
doaj   +1 more source

Electronic and Magnetic Reconstructions in Manganite Superlattices

, 2013
We investigate the electronic reconstruction at the interface between ferromagnetic metallic (FM) and antiferromagnetic insulating (AFI) manganites in superlattices using a two-orbital double-exchange model including superexchange interactions, Jahn ...
Kampf, Arno P., Pradhan, Kalpataru
core   +1 more source

Realization of a Valley Superlattice

Physical Review Letters, 2018
In a number of widely-studied materials, such as Si, AlAs, Bi, graphene, MoS2, and many transition metal dichalcogenide monolayers, electrons acquire an additional, spin-like degree of freedom at the degenerate conduction band minima, also known as "valleys".
Mueed, M. A., Hossain, Md. Shafayat, Jo, I., Pfeiffer, L. N., West, K. W., Baldwin, K. W., Shayegan, M.   +6 more
openaire   +4 more sources

Progress in Strain Engineering of 2D‐Integrated Heterostructures for Ultrasensitive Sensors

Advanced Science, EarlyView.
 . ABSTRACT Two‐dimensional (2D) integrated heterostructures have emerged as a cornerstone in the advancement of next‐generation sensor technologies. These heterostructures, which combine materials with different dimensionalities, have led to significant breakthroughs in sensing performance and device integration.
That Buu Ton, Tuan Sang Tran, Duc Khanh Tran, Van Thanh Dau, Dzung Viet Dao   +4 more
wiley   +1 more source

Suppression of Superconductivity in YBCO/LCMO Superlattices

, 2003
The competition of superconductivity and magnetism in superlattices composed of alternating YBa$_2$Cu$_3$O$_{7-d}$ and La$_{0.67}$Ca$_{0.33}$MnO$_{3}$ thin films is investigated using low-energy optical spectroscopy.
Abikosov, B Gorshunov, Bonn, Chaudhari, Chien, de Vaulchier, Djordjevic, Dressel, F Chen, Fisher, Franz, Fulde, G Cristiani, Goldman, Goldman, H.-U Habermeier, Habermeier, Habermeier, Hardy, Izyumov, Jakob, Johnson, Kozlov, Larkin, M Dressel, Maki, Maple, Pieto, Przysłupski, Sefrioui, Soltan, Sun, Tanner, Ulm, Vas'ko, Yeh   +35 more
core   +1 more source