搜索结果: 1-15 共查到“凝聚态物理学 Magnetic”相关记录76条 . 查询时间(0.046 秒)
Using state-of-the-art magnetic imaging, a Cornell-led collaboration has for the first time characterized a key property of the superconducting state of a class of atomically thin materials that are t...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Fast Magnetic Resonance Imaging and Inverse Problems
快速 磁共振成像 逆问题
2023/4/17
磁共振成像是目前医学成像技术中功能最强大，技术门槛最复杂的技术之一。然而，相对其他成像模态较为缓慢的采集速度（较长的扫描时间）制约了磁共振成像在临床上的广泛应用。借助采样样本的数量与扫描时间的正比关系，通过减少采集的数据量（稀疏采样）来缩短磁共振采集时间是磁共振成像领域的重要途径，而从高度欠采样的数据中重建出高质量的图像可以近似为一个病态反问题，对这一问题的求解是快速磁共振成像领域的研究热点。本次...
Physicists at the University of Illinois at Urbana-Champaign announced they have observed a magnetic phenomenon called the "anomalous spin-orbit torque," or ASOT, for the first time. The team's findin...
Scientists Find Surprising Magnetic Excitations in a Metallic Compound
Scientists Magnetic Excitations Metallic Compound
2016/6/12
Some three-dimensional materials can exhibit exotic properties that only exist in "lower" dimensions. For example, in one-dimensional chains of atoms that emerge within a bulk sample, electrons can se...
Scientists create ‘rewritable magnetic charge ice’
Scientists rewritable magnetic charge ice
2016/5/31
A team of scientists working at the U.S. Department of Energy’s (DOE) Argonne National Laboratory and led by Northern Illinois University physicist Zhili Xiao has created a ne...
Experiments show magnetic chips could dramatically increase computing’s energy efficiency
magnetic chips dramatically increase computing energy efficiency
2016/3/21
In a breakthrough for energy-efficient computing, UC Berkeley engineers have shown for the first time that magnetic chips can actually operate at the lowest fundamental energy dissipation theoret...
First-principles study on the magnetic properties in Mg dooped BiFeO3 with and without oxygen vacancies
Vacancies Magnesium Magnetic moments Antiferromagnetism Band gap
2016/12/2
The magnetic properties of Mg-doped BiFeO3 (BFO) with and without oxygen vacancies are studied through first-principles calculations. The Mg-doping prefers to occupy the ferromagnetic planes and produ...
Unconventional magnetic phase diagram of cuprate superconductor La2-xSrxCuO4 at quantum critical point x = 1/9
Unconventional magnetic phase diagram cuprate superconductor La2-xSrxCuO4 quantum critical point
2012/2/27
We propose a new magnetic phase diagram of La2-xSrxCuO4 around a quantum critical point x = 1/9 based on field-cooled magnetization measurements and critical fittings. A new phase boundary Tm2(H) is d...
Tc is insensitive to magnetic interactions in high-Tc superconductors
Tc insensitive magnetic interactions high-Tc superconductors
2012/2/27
A quarter of a century after their discovery the mechanism that pairs carriers in the cuprate high-Tc superconductors (HTS) still remains uncertain. Despite this the general consensus is that it is pr...
Geometric shape dependence of coercivity for patterned magnetic thin films
Coercivity E-beam lithography Micro-structure Shaped-dependence Canting
2011/11/30
The micro-strips with patterned magnetic domains using electron beam lithography have been made to study the geometric shape dependence of coercivity. The size of the micro-strip is 10 lm]30 lm with 0...
Magnetoresistivity and Acoustoelectronic Effects in a Tilted Magnetic Field in $p$-Si/SiGe/Si Structures with an Anisotropic $g$ Factor
Magnetoresistivity Acoustoelectronic Effects
2010/11/25
Magnetoresistivity xx and xy and the acoustoelectronic effects are measured in p-Si/SiGe/Si
with an impurity concentration p = 1.99 × 1011 cm−2 in the temperature range 0.3–2.0 K and an tilte...
Quantum fluctuations in the effective pseudospin-1/2 model for magnetic pyrochlore oxides
effective pseudospin-1/2 model magnetic pyrochlore oxides
2010/11/25
The e ective quantum pseudospin-1=2 model for interacting rare-earth magnetic moments, which
are locally described with atomic doublets, is studied theoretically for magnetic pyrochlore oxides.It is ...
Optical detection of spin transport in non-magnetic metals
Optical detection of spin transport non-magnetic metals
2010/11/24
We determine the dynamic magnetization induced in non-magnetic metal wedges composed of
silver, copper and platinum by means of Brillouin light scattering (BLS) microscopy. The magnetization is trans...
Orbital occupation and magnetic moments of tetrahedrally coordinated iron in CaBaFe4O7
Orbital occupation magnetic moments tetrahedrally coordinated iron
2010/11/25
CaBaFe4O7 is a mixed-valent transition metal oxide having both Fe2+ and Fe3+ ions in tetrahedral coordination. Here we characterize its magnetic properties by magnetization measurements and investigat...
Atomistic theory of spin relaxation in self-assembled In$_{1-x}$Ga$_x$As/GaAs quantum dots at zero magnetic field
Atomistic theory spin relaxation zero magnetic field
2010/11/25
We present full atomistic calculations of the spin-flip time (T1) of electrons and holes mediated by acoustic phonons in self-assembled In1−xGaxAs/GaAs quantum dots at zero magnetic field. At lo...