Spin Filtering of Hot Holes in a Metallic Ferromagnet

T. Banerjee; E. Haq; M.H. Siekman; J.C. Lodder; R. Jansen

doi:10.1103/PhysRevLett.94.027204

Spin Filtering of Hot Holes in a Metallic Ferromagnet

T. Banerjee, E. Haq, M.H. Siekman, J.C. Lodder, R. Jansen

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Abstract

Spin-dependent transport of nonequilibrium holes in ferromagnetic thin films and trilayers is investigated using ballistic hole magnetic microscopy. For Co, the hole attenuation length is short and increases from 6 to 10 Å in the energy range 0.8 to 2 eV. The hole transmission of a Ni81Fe19/Au/Co trilayer is clearly spin dependent, resulting in a surprisingly large current change by a factor of 2.3 in a magnetic field. The energy and spin dependence of the hole transmission cannot be explained by the phase space available for inelastic decay of the hot holes.

Original language	English
Pages (from-to)	027204-1-027204-4
Journal	Physical Review Letters
Volume	94
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.94.027204
Publication status	Published - 2005
Externally published	Yes

Keywords

magnetic multilayers
cobalt
gold
iron alloys
nickel alloys
hot carriers
magnetoelectronics
ferromagnetic materials
magnetic thin films

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title = "Spin Filtering of Hot Holes in a Metallic Ferromagnet",

abstract = "Spin-dependent transport of nonequilibrium holes in ferromagnetic thin films and trilayers is investigated using ballistic hole magnetic microscopy. For Co, the hole attenuation length is short and increases from 6 to 10 {\AA} in the energy range 0.8 to 2 eV. The hole transmission of a Ni81Fe19/Au/Co trilayer is clearly spin dependent, resulting in a surprisingly large current change by a factor of 2.3 in a magnetic field. The energy and spin dependence of the hole transmission cannot be explained by the phase space available for inelastic decay of the hot holes.",

keywords = "magnetic multilayers, cobalt, gold, iron alloys, nickel alloys, hot carriers, magnetoelectronics, ferromagnetic materials, magnetic thin films",

author = "T. Banerjee and E. Haq and M.H. Siekman and J.C. Lodder and R. Jansen",

note = "Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials",

year = "2005",

doi = "10.1103/PhysRevLett.94.027204",

language = "English",

volume = "94",

pages = "027204--1--027204--4",

journal = "Physical Review Letters",

issn = "0031-9007",

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T1 - Spin Filtering of Hot Holes in a Metallic Ferromagnet

AU - Banerjee, T.

AU - Haq, E.

AU - Siekman, M.H.

AU - Lodder, J.C.

AU - Jansen, R.

N1 - Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials

PY - 2005

Y1 - 2005

N2 - Spin-dependent transport of nonequilibrium holes in ferromagnetic thin films and trilayers is investigated using ballistic hole magnetic microscopy. For Co, the hole attenuation length is short and increases from 6 to 10 Å in the energy range 0.8 to 2 eV. The hole transmission of a Ni81Fe19/Au/Co trilayer is clearly spin dependent, resulting in a surprisingly large current change by a factor of 2.3 in a magnetic field. The energy and spin dependence of the hole transmission cannot be explained by the phase space available for inelastic decay of the hot holes.

AB - Spin-dependent transport of nonequilibrium holes in ferromagnetic thin films and trilayers is investigated using ballistic hole magnetic microscopy. For Co, the hole attenuation length is short and increases from 6 to 10 Å in the energy range 0.8 to 2 eV. The hole transmission of a Ni81Fe19/Au/Co trilayer is clearly spin dependent, resulting in a surprisingly large current change by a factor of 2.3 in a magnetic field. The energy and spin dependence of the hole transmission cannot be explained by the phase space available for inelastic decay of the hot holes.

KW - magnetic multilayers

KW - cobalt

KW - gold

KW - iron alloys

KW - nickel alloys

KW - hot carriers

KW - magnetoelectronics

KW - ferromagnetic materials

KW - magnetic thin films

U2 - 10.1103/PhysRevLett.94.027204

DO - 10.1103/PhysRevLett.94.027204

M3 - Article

SN - 0031-9007

VL - 94

SP - 027204-1-027204-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

ER -

Spin Filtering of Hot Holes in a Metallic Ferromagnet

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