搜索结果: 1-15 共查到“理学 room-temperature”相关记录30条 . 查询时间(0.265 秒)
[成果]北京师范大学物理学系张金星和沈卡小组与合作者以“Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions”为题发表学术成果（图）
磁性体系；多铁性材料；磁电耦合
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2021/11/1
Dzyaloshinskii-Moriya（DM）相互作用，是一种反对称自旋交换作用，于上个世纪六十年代由I. Dzyaloshinskii利用唯象理论提出，并由T. Moriya在超交换相互作用中考虑自旋轨道耦合而发展的微观理论，被用来解释磁性体系中诸多新奇物理现象（自旋玻璃中的各向异性场、多铁性材料中的磁电耦合、自旋波的非对称色散关系、非共线磁结构等）。近十几年来，由于DM相互作用而实现的螺旋...
Physicists observe room-temperature superconductivity（图）
room-temperature superconductivity
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2020/10/23
Researchers at the University of Rochester and the University of Las Vegas, Nevada, have made a breakthrough in the long sought-after quest for a room-temperature superconductor, which they call the "...
System's ability to boost laser precision at room temperature increases its usability（图）
boost laser precision room temperature increases usability
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2020/7/17
Physicists at the Massachusetts Institute of Technology have designed a quantum "light squeezer" that reduces quantum noise in an incoming laser beam by 15%. It is the first system of its ki...
Room Temperature Ultra-sensitive Mass Spectrometer via Dynamic Decoupling
Room Temperature Ultra-sensitive Mass Spectrometer Dynamic Decoupling
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2016/1/22
We propose an ultrasensitive mass spectrometer based on a coupled quantum-bit-oscillator system. Under dynamical decoupling control of the quantum bit (qubit), the qubit coherence exhibits a comb stru...
Strange quantum phenomenon achieved at room temperature in semiconductor wafers
Argonne National Laboratory David Awschalom Innovation Institute for Molecular Engineering Quantum particles
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2015/12/7
A new study has found a link between abrupt ocean warming at the end of the last ice age and the sudden onset of low-oxygen, or hypoxic conditions that led to vast marine dead zones.Results of the stu...
Argonne scientists announce first room-temperature magnetic skyrmion bubbles
Argonne scientists room-temperature magnetic skyrmion bubbles
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2015/6/18
New ideas are bubbling up for more efficient computer memory.Researchers at UCLA and the U.S. Department of Energy’s Argonne National Laboratory announced today a new method for creating magnetic skyr...
Experimental study of rare earth element partitioning between calcite and sodium chloride solution at room temperature and pressure
rare earth elements lanthanide calcite partition coefficient calcium carbonate
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2017/4/11
The rare earth element (REE) partition coefficients between calcite and aqueous solution were obtained experimentally
under the conditions of pH, ionic strength and REE concentration level in the par...
Ground state sideband cooling of an ion in a room temperature trap with a sub-Hertz heating rate
Ground state sideband ion sub-Hertz heating rate Atomic Physics
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2012/5/29
We demonstrate resolved sideband laser cooling of a single 40Ca+ ion in a macroscopic linear radio frequency trap with a radial diagonal electrode spacing of 7 mm and an rf drive frequency of just 3.7...
Confirmation of room-temperature long range magnetic order in GaN:Mn
GaN:Mn Diluted magnetic semiconductor Atomic force microscope
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2010/11/23
We propose a method for nano-scale characterization of long range magnetic order in diluted magnetic systems to clarify the origins of the room temperature ferromagnetism. The GaN:Mn thin films are gr...
Amplified Stimulated Terahertz Emission at Room temperature from Optically Pumped Graphene
Terahertz Emission Room temperature Optically Pumped Graphene
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2010/11/17
Room temperature Terahertz stimulated emission and population inversion in optically pumped graphene is reported. We experimentally observe fast relaxation and relatively slow recombination dynamics ...
Room Temperature Coherent and Voltage Tunable Terahertz Emission from Nanometer-Sized Field Effect Transistors
Room Temperature Coherent Voltage Tunable Terahertz Emission
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2010/11/24
We report on reflective electro-optic sampling measurements of TeraHertz emission from nanometer-gate-length InGaAs-based high electron mobility transistors. The room temperature coherent gate-voltage...
Amplified Stimulated Terahertz Emission at Room temperature from Optically Pumped Graphene
Amplified Stimulated Terahertz Emission Room temperature Optically Pumped Graphene
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2010/11/22
Room temperature Terahertz stimulated emission and population inversion in optically
pumped graphene is reported. We experimentally observe fast relaxation and relatively slow recombination dynamics ...
Experimental implementation of optimal phase-covariant quantum cloning machine with a single electron spin in diamond at room temperature
Experimental implementation optimal phase-covariant quantum cloning machine single electron spin diamond at room temperature
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2010/10/19
Here we report an experimental realization of optimal phase-covariant quantum cloning machine
with a single electron spin in solid state system at room temperature. The involved three states of two l...
Zeolite catalyzed efficient synthesis of perimidines at room temperature
Diaminonaphthalene perimidine zeolite
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2010/4/8
Arylperimidines, 3(a-l), were synthesized in good yields by cyclocondensation reaction of 1,8-diaminonaphthalene and aromatic aldehydes in the presence of NaY zeolite as a catalyst. The simple environ...
Production of highly charged argon ions from a room temperature electron beam ion trap
EBIS highly charged ion ionization time
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2009/8/14
In this work, highly charged ions have been extracted from the advanced Electron Beam Ion Source (EBIS-A) developed in a scientific cooperation between the Dresden University of Technology and the DRE...