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Rare-earth ion dopants in solid-state hosts are ideal candidates for quantum communication technologies such as quantum memory, due to the intrinsic spin-photon interface of the rare-earth ion combined with the integration methods available…

The eutectic system Sr2RuO4-Ru is referred to as the 3-K phase of the spin-triplet supeconductor Sr2RuO4 because of its enhanced superconducting transition temperature Tc of ~3 K. We have investigated the field-temperature (H-T) phase…

超导电性 · 物理学 2009-11-10 Hiroshi Yaguchi , Masahiko Wada , Takashi Akima , Yoshiteru Maeno , Takehiko Ishiguro

The fluorescence spectra of a sub-micron atomic cesium vapor layer observable under resonant excitation on D2 line have been studied in the presence of an external magnetic field. Substantial changes in amplitudes and frequency positions of…

原子物理 · 物理学 2007-05-23 Aram Papoyan , David Sarkisyan , Kaspars Blush , Marcis Auzinsh , Daniel Bloch , Martial Ducloy

The quasi 2D electron system (q2DES) that forms at the interface between LaAlO3 and SrTiO3 has attracted much attention from the oxide electronics community. One of its hallmark features is the existence of a critical LaAlO3 thickness of 4…

材料科学 · 物理学 2017-08-31 D. C. Vaz , E. Lesne , H. Naganuma , E. Jacquet , J. Santamaria , A. Barthelemy , M. Bibes

We experimentally discovered that Al2O3 and MgO exhibit well-pronounced nanometric modifications on the surfaces when irradiated under grazing incidence with 23 MeV I beam, in contrast to normal incidence irradiation with the same ion beam…

We investigate the effect of cylindrical nano-confinement on the phase behaviour of a rigid model of carbon dioxide using both molecular dynamics and well tempered metadynamics. To this aim we study a simplified pore model across a…

材料科学 · 物理学 2017-09-15 Ilaria Gimondi , Matteo Salvalaglio

The observation of sub-grained cellular features in additively manufactured (AM)/selectively laser melted (SLM) 316L stainless steel components has remained an interesting, though incompletely understood phenomenon. However, the recently…

Molybdenum disulfide (MoS2) is a particularly interesting member of the family of two-dimensional (2D) materials due to its semiconducting and tunable electronic properties. Currently, the most reliable method for obtaining high-quality…

A controllable synthesis method for SiC-SiO$_{2}$ nanocables has been proposed. The diameter of SiC core and thickness of SiO$_{2}$ shell were changed by adjusting the flow ratio between Ar dilution gas and ethanol precursor. With…

材料科学 · 物理学 2015-08-19 Ryongjin Kim , Song-Jin Im , Ju-Myong Han , Yong-Hua Han , Tae-Hua Pak , Yong-Guk Choe , Sam-Hyok Choe

The c(6x2) is a reconstruction of the SrTiO3(001) surface that is formed between 1050-1100oC in oxidizing annealing conditions. This work proposes a model for the atomic structure for the c(6x2) obtained through a combination of results…

A structural phase transformation in the CuO_2 planes of YBa_2Cu_3O_x has been observed at the onset of the overdoped regime, x=6.95. We have measured as a function of x the dimpling in the CuO_2 planes by EXAFS, and the O2,3 in-phase…

超导电性 · 物理学 2009-10-30 E. Kaldis , J. Röhler , E. Liarokapis , N. Poulakis , K. Conder , P. W. Loeffen

The atomic-scale synthesis of artificial oxide heterostructures offers new opportunities to create novel states that do not occur in nature. The main challenge related to synthesizing these structures is obtaining atomically sharp…

GaAs/Fe$_{3}$Si core/shell nanowire structures were fabricated by molecular-beam epitaxy on oxidized Si(111) substrates and investigated by synchrotron x-ray diffraction. The surfaces of the Fe$_3$Si shells exhibit nanofacets. These facets…

材料科学 · 物理学 2016-05-19 Bernd Jenichen , Michael Hanke , Maria Hilse , Jens Herfort , Achim Trampert , Steven C. Erwin

Context. "Snow lines", marking regions where abundant volatiles freeze out onto the surface of dust grains, play an important role for planet growth and bulk composition in protoplanetary disks. They can already be observed in the envelopes…

星系天体物理 · 物理学 2016-06-08 S. Anderl , S. Maret , S. Cabrit , A. Belloche , A. J. Maury , Ph. André , C. Codella , A. Bacmann , S. Bontemps , L. Podio , F. Gueth , E. Bergin

High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave superconducting gap (SG) should provide…

超导电性 · 物理学 2015-05-13 T. Hanaguri , Y. Kohsaka , J. C. Davis , C. Lupien , I. Yamada , M. Azuma , M. Takano , K. Ohishi , M. Ono , H. Takagi

Oxide growth with semiconductor-like accuracy has led to atomically precise thin films and interfaces that exhibit a plethora of phases and functionalities not found in the oxide bulk material. This yielded spectacular discoveries such as…

Grain boundaries have extensive influence on the performance of crystal materials. However, the atomic-scale structure and its relation with local and crystallographic symmetries remain elusive in low-symmetry crystals. Herein, we find that…

材料科学 · 物理学 2024-09-24 Yuchao Yan , Yingying Liu , Ziyi Wang , Da Liu , Xu Gao , Yan Wang , Cheng Li , KeKe Ma , Ning Xia , Zhu Jin , Tianqi Deng , Hui Zhang , Deren Yang

The formation of grains in the interstellar medium, i.e., at low temperature, has been proposed as a possibility to solve the lifetime problem of cosmic dust. This process lacks a firm experimental basis, which is the goal of this study. We…

星系天体物理 · 物理学 2014-04-11 S. A. Krasnokutski , G. Rouille , C. Jager , F. Huisken , S. Zhukovska , Th. Henning

Low-dimensional magnetic structures coupled with superconductors are promising platforms for realizing Majorana zero modes, which have potential applications in topological quantum computing. Here, we report a two-dimensional (2D)…

We present molecular line mapping of the Giant Molecular Cloud G1.6-0.025, which is located at the high longitude end of the Central Molecular Zone of our Galaxy. We assess the degree of star formation activity in that region using several…

天体物理学 · 物理学 2011-02-11 Karl M. Menten , Robert W. Wilson , Silvia Leurini , Peter Schilke