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28 条记录 (耗时 0.021 秒)

    Charged particle vortex wave generation
    5.
    发明授权
    Charged particle vortex wave generation 有权
    带电粒子涡流产生

    公开(公告)号：US09018596B2

    公开(公告)日：2015-04-28

    申请号：US14366564

    申请日：2012-12-19

    申请人： Universiteit Antwerpen

    发明人： Johan Verbeeck ,  Gustaaf Van Tendeloo

    IPC分类号： H01J37/04 ,  H01J37/26 ,  H01J3/02 ,  H01J37/06 ,  H01J37/08 ,  H01J37/256

    CPC分类号： H01J37/04 ,  H01J3/02 ,  H01J3/021 ,  H01J37/06 ,  H01J37/08 ,  H01J37/256 ,  H01J37/261 ,  H01J2237/06383 ,  H01J2237/2614

    摘要： A device for imparting an orbital angular momentum to a charged particle wave propagating along a beam axis in a charged particle beam generating apparatus is described. The device comprises a support element having a target region adapted for transmitting a charged particle wave propagating along a beam axis and an induction means for inducing a magnetic flux along an elongated profile having a free end portion located in the target region and the induction means is adapted for providing a magnetic flux in the elongated profile in order to induce an angular gradient, relative to the beam axis, of the phase of the charged particle wave when transmitted through the target region. A corresponding method is also disclosed, as well as the use thereof in electron microscopy.

    摘要翻译： 描述了一种用于对带电粒子束产生装置中沿着光束轴传播的带电粒子波进行轨道角动量的装置。 该装置包括支撑元件，该支撑元件具有适于传输沿着光束轴传播的带电粒子波的目标区域和用于沿着具有位于目标区域中的自由端部分的细长轮廓感应磁通量的感应装置，并且感应装置是 适于在细长轮廓中提供磁通量，以便当透射通过目标区域时引起带电粒子波相位相对于光束轴的角度梯度。 还公开了相应的方法，以及其在电子显微镜中的应用。

    SPIN-POLARIZED ELECTRON SOURCE
    6.
    发明申请
    SPIN-POLARIZED ELECTRON SOURCE 有权
    旋转极化电子源

    公开(公告)号：US20110089397A1

    公开(公告)日：2011-04-21

    申请号：US12736270

    申请日：2009-03-24

    申请人： Toru Ujihara ,  Xiuguang Jin ,  Yoshikazu Takeda ,  Tsutomu Nakanishi ,  Naoto Yamamoto ,  Takashi Saka ,  Toshihiro Kato

    发明人： Toru Ujihara ,  Xiuguang Jin ,  Yoshikazu Takeda ,  Tsutomu Nakanishi ,  Naoto Yamamoto ,  Takashi Saka ,  Toshihiro Kato

    IPC分类号： H01L29/12

    CPC分类号： G21K1/16 ,  H01J1/34 ,  H01J3/021 ,  H01J37/06 ,  H01J2201/3423 ,  H01J2203/0296 ,  H01J2237/06333 ,  H01J2237/06383 ,  H01J2237/24557 ,  H01J2237/26

    摘要： To provide implement a spin-polarized electron generating device having high spin polarization and high external quantum efficiency while allowing a certain degree of freedom in selecting materials of a substrate, a buffer layer, and a strained superlattice layer.In a spin-polarized electron generating device having a substrate, a buffer layer, and a strained superlattice layer formed on the buffer layer, an intermediate layer formed of a crystal having a lattice constant greater than that of a crystal used to form the buffer layer intervenes between the substrate and the buffer layer. With this arrangement, tensile strain causes cracks to be formed in the buffer layer in a direction perpendicular to the substrate, whereby the buffer layer has mosaic-like appearance. As a result, glide dislocations in an oblique direction do not propagate to the strained superlattice layer to be grown on the buffer layer, thereby improving crystallinity of the strained superlattice layer. Accordingly, spin polarization of excited electrons and external quantum efficiency of polarized electrons improve.

    摘要翻译： 为了提供具有高自旋极化和高外部量子效率的自旋极化电子发生器件，同时在选择衬底，缓冲层和应变超晶格层的材料方面具有一定的自由度。 在具有形成在缓冲层上的衬底，缓冲层和应变超晶格层的自旋极化电子发生器件中，由晶格常数大于用于形成缓冲层的晶体的晶格常数的晶体形成的中间层 介于衬底和缓冲层之间。 通过这种布置，拉伸应变使得缓冲层中的垂直于基板的方向形成裂纹，由此缓冲层具有马赛克状外观。 结果，倾斜方向的滑移位错不会传播到在缓冲层上生长的应变超晶格层，从而提高应变超晶格层的结晶度。 因此，激发电子的自旋极化和极化电子的外部量子效率提高。

    Method and apparatus for storing data using spin-polarized electrons
    8.
    发明授权
    Method and apparatus for storing data using spin-polarized electrons 有权
    使用自旋极化电子存储数据的方法和装置

    公开(公告)号：US6147894A

    公开(公告)日：2000-11-14

    申请号：US157368

    申请日：1998-09-21

    申请人： Thomas D. Hurt

    发明人： Thomas D. Hurt

    IPC分类号： G11B7/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/64 ,  G11B7/004 ,  G11B9/10 ,  G11B11/10 ,  G11B11/11 ,  G11B11/115 ,  G11B13/04 ,  G11B19/04 ,  G11B20/18 ,  G11B23/28 ,  G11C11/02 ,  G11C11/16 ,  G11C11/23 ,  H01J3/02 ,  H01J29/48 ,  H01J31/60 ,  G11C13/00

    CPC分类号： G11B5/65 ,  G11B11/11 ,  G11B11/115 ,  G11B19/04 ,  G11B20/1883 ,  G11B23/28 ,  G11B5/00 ,  G11B5/64 ,  G11B5/653 ,  G11B5/656 ,  G11B9/10 ,  G11C11/02 ,  G11C11/23 ,  H01J3/02 ,  H01J31/60 ,  G11B13/045 ,  H01J2203/0296 ,  H01J2237/06383

    摘要： A data storage device including a substrate, a data storage layer on the substrate, and a spin-polarized electron source. The data storage layer comprises a fixed number of atomic layers of a magnetic material which provide the data storage layer with a magnetic anisotropy perpendicular to a surface of the data storage layer. A data magnetic field is created in the data storage layer. The data magnetic field is polarized either in a first direction corresponding to a first data value or in a second direction corresponding to a second data value. Data is stored in the data storage layer by providing a spin-polarized electron having an electron magnetic field with a direction of polarization corresponding to one of the first and the second data values, the electron having a wavelength "characteristic" of unpaired electrons in the data storage layer which cause the magnetic moment of the material, and directing the spin-polarized electron at the data magnetic field to impart the direction of polarization of the electron magnetic field to the data magnetic field. Data is read from the data storage layer by directing the spin-polarized electron at a second wavelength at the data magnetic field and detecting a deflection or attraction of the spin-polarized electron by the data magnetic field. Alternatively, data is read from the data storage layer by directing the spin-polarized electron at the data magnetic field so that the magnetic medium produces a secondary electron and then detecting certain characteristics of the secondary electron.

    摘要翻译： 一种数据存储装置，包括基板，基板上的数据存储层和自旋极化电子源。 数据存储层包括固定数量的磁性材料的原子层，为数据存储层提供垂直于数据存储层表面的磁各向异性。 在数据存储层中创建数据磁场。 数据磁场在对应于第一数据值的第一方向或对应于第二数据值的第二方向上被极化。 通过提供具有电子磁场的自旋极化电子，数据存储在数据存储层中，该电子磁场具有与第一和第二数据值中的一个数据值相对应的极化方向，电子具有不成对电子的波长“特性” 数据存储层，其引起材料的磁矩，并将自旋极化电子引导到数据磁场，以将电子磁场的极化方向赋予数据磁场。 通过在数据磁场处引导第二波长的自旋极化电子并通过数据磁场检测自旋极化电子的偏转或吸引，从数据存储层读取数据。 或者，通过将自旋极化电子指向数据磁场，从数据存储层读取数据，使得磁介质产生二次电子，然后检测二次电子的某些特性。

    CONVERTER OF ORBITAL MOMENTUM INTO SPIN MOMENTUM FOR THE POLARIZATION OF PARTICLE BEAMS
    10.
    发明申请
    CONVERTER OF ORBITAL MOMENTUM INTO SPIN MOMENTUM FOR THE POLARIZATION OF PARTICLE BEAMS 有权
    将圆形转换器转换为用于极化粒子的旋转元件

    公开(公告)号：US20130168577A1

    公开(公告)日：2013-07-04

    申请号：US13715662

    申请日：2012-12-14

    申请人： CONSIGLIO NAZIONALE DELLE RICERCHE

    发明人： Vincenzo GRILLO ,  Lorenzo MARRUCCI ,  Ebrahim KARIMI ,  Enrico SANTAMATO

    IPC分类号： G21K1/16

    CPC分类号： H01J37/26 ,  G21K1/16 ,  H01J3/02 ,  H01J37/06 ,  H01J2203/0296 ,  H01J2237/06383

    摘要： An apparatus for spin polarizing a particle beam is adapted to process an input particle beam in such a way as to generate an at least partially spin polarized output particle beam. A vortex beam generator for imparting orbital angular momentum to the input particle beam. An electromagnetic field generator generates a transverse magnetic field, space-variant and symmetric with respect to the axis of the input particle beam, in such a way as to change the spin of the particles and attach thereto different values of orbital angular momentum in dependence on their input spin values. A beam component separating group spatially separates the particles in dependence on their orbital angular momentum values, in such a way as to obtain the at least partially spin polarized output particle beam.

    摘要翻译： 用于自旋极化粒子束的装置适于处理输入粒子束，以便产生至少部分旋转偏振的输出粒子束。 用于将轨道角动量传递给输入粒子束的涡流束发生器。 电磁场发生器以相对于输入粒子束的轴线的空间变化和对称的方式产生横向磁场，以便改变粒子的旋转，并依附于其上附加不同的轨道角动量值 他们的输入自旋值。 光束分量分组基于其轨道角动量值空间上分离颗粒，以获得至少部分自旋极化输出粒子束。