A study of inelastic electron–phonon interactions on tunneling magnetoresistance of a nano-scale device
نویسنده:
, , , , , , , , ,سال
: 2011
چکیده: In this research, we have studied the effect of inelastic electron–phonon interactions on current–voltage
characteristic and tunneling magnetoresistance of a polythiophene molecule that is sandwiched between
two cobalt electrodes using modified Green’s function method as proposed by Walczak. The molecule is
described with a modified Su–Schrieffer–Heeger Hamiltonian. The ground state of the molecule is
obtained by Hellman–Feynman theorem. Electrodes are described in the wide-band approximation and
spin-flip is neglected during conduction. Our calculation results show that with increase in voltage the
currents increase and tunneling magnetoresistance decreases. Change in tunneling magnetoresistance
due to inelastic interactions is limited in a small bias voltage interval and can be neglected in the other bias
voltages.
characteristic and tunneling magnetoresistance of a polythiophene molecule that is sandwiched between
two cobalt electrodes using modified Green’s function method as proposed by Walczak. The molecule is
described with a modified Su–Schrieffer–Heeger Hamiltonian. The ground state of the molecule is
obtained by Hellman–Feynman theorem. Electrodes are described in the wide-band approximation and
spin-flip is neglected during conduction. Our calculation results show that with increase in voltage the
currents increase and tunneling magnetoresistance decreases. Change in tunneling magnetoresistance
due to inelastic interactions is limited in a small bias voltage interval and can be neglected in the other bias
voltages.
کلیدواژه(گان): Tunneling magnetoresistance
Green’s function
Polythiophene
Electron–phonon interaction
کالکشن
:
-
آمار بازدید
A study of inelastic electron–phonon interactions on tunneling magnetoresistance of a nano-scale device
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| contributor author | سید محسن مدرسی سریزدی | en |
| contributor author | محمود رضائی رکن آبادی | en |
| contributor author | ناصر شاه طهماسبی | en |
| contributor author | داود واحدی فخرآباد | en |
| contributor author | هادی عربشاهی | en |
| contributor author | Sayyed Mohsen Modarresi Saryazdi | fa |
| contributor author | Mahmood Rezaee Roknabadi | fa |
| contributor author | Nasser Shahtahmassebi | fa |
| contributor author | davoud vahedi | fa |
| contributor author | Hadi Arabshahi | fa |
| date accessioned | 2020-06-06T14:34:31Z | |
| date available | 2020-06-06T14:34:31Z | |
| date issued | 2011 | |
| identifier uri | https://libsearch.um.ac.ir:443/fum/handle/fum/3402468 | |
| description abstract | In this research, we have studied the effect of inelastic electron–phonon interactions on current–voltage characteristic and tunneling magnetoresistance of a polythiophene molecule that is sandwiched between two cobalt electrodes using modified Green’s function method as proposed by Walczak. The molecule is described with a modified Su–Schrieffer–Heeger Hamiltonian. The ground state of the molecule is obtained by Hellman–Feynman theorem. Electrodes are described in the wide-band approximation and spin-flip is neglected during conduction. Our calculation results show that with increase in voltage the currents increase and tunneling magnetoresistance decreases. Change in tunneling magnetoresistance due to inelastic interactions is limited in a small bias voltage interval and can be neglected in the other bias voltages. | en |
| language | English | |
| title | A study of inelastic electron–phonon interactions on tunneling magnetoresistance of a nano-scale device | en |
| type | Journal Paper | |
| contenttype | External Fulltext | |
| subject keywords | Tunneling magnetoresistance Green’s function Polythiophene Electron–phonon interaction | en |
| journal title | Physica B: Condensed Matter | fa |
| pages | 478-481 | |
| journal volume | 406 | |
| journal issue | 127 | |
| identifier link | https://profdoc.um.ac.ir/paper-abstract-1020428.html | |
| identifier articleid | 1020428 |