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Competition between superconducting and ferromagnetic ordering at interfaces between ferromagnets (F) and superconductors (S) gives rise to several proximity effects such as odd-triplet superconductivity and spin-polarized supercurrents. A…

超导电性 · 物理学 2019-11-27 Alejandro A. Jara , Evan Moen , Oriol T. Valls , Ilya N. Krivorotov

Electrical injection and detection of spin-polarized electrons is demonstrated for the first time in a single wafer, all-semiconductor, GaAs-based lateral spintronic device, employing p+-(Ga,Mn)As/n+-GaAs ferromagnetic Esaki diodes as spin…

Dynamic response of two-dimensional electron systems with spin-orbit interaction is studied theoretically on the basis of quantum kinetic equation, taking into account elastic scattering of electrons. The spin polarization and spin current…

介观与纳米尺度物理 · 物理学 2007-06-19 O. E. Raichev

When a charge current is applied to a junction comprising two different conductors, its temperature increases or decreases depending on the direction of the charge current. This phenomenon is called the Peltier effect, which is used in…

介观与纳米尺度物理 · 物理学 2016-12-30 Shunsuke Daimon , Ryo Iguchi , Tomosato Hioki , Eiji Saitoh , Ken-ichi Uchida

The angular dependence of the thermal transport in insulating or conducting ferromagnets is derived on the basis of the Onsager reciprocity relations applied to a magnetic system. It is shown that the angular dependence of the temperature…

介观与纳米尺度物理 · 物理学 2015-06-17 J. -E. Wegrowe , H. -J. Drouhin , D. Lacour

The longitudinal spin Seebeck effect (LSSE) in Pt/Y$_3$Fe$_5$O$_{12}$ (YIG) junction systems has been investigated at various magnetic fields and temperatures. We found that the LSSE voltage in a Pt/YIG-slab system is suppressed by applying…

材料科学 · 物理学 2015-08-19 Takashi Kikkawa , Ken-ichi Uchida , Shunsuke Daimon , Zhiyong Qiu , Yuki Shiomi , Eiji Saitoh

In a recent Letter Hammar et al. claim the observation of injection of a spin-polarized current in a two-dimensional electron gas (2DEG). This is an important observation, since, despite considerable effort of several groups, all attempts…

凝聚态物理 · 物理学 2009-10-31 B. J. van Wees

We show that graphene with Mn adatoms trapped at single vacancies feature spin-dependent Seebeck effect, thus enabling the use of this material for spin caloritronics. A gate potential can be used to tune its thermoelectric properties in a…

介观与纳米尺度物理 · 物理学 2014-02-25 Alberto Torres , Matheus P. Lima , A. Fazzio , Antônio J. R. da Silva

We theoretically investigate the spin-dependent Seebeck effect in an Aharonov-Bohm mesoscopic ring in the presence of both Rashba and Dresselhaus spin-orbit interactions under magnetic flux perpendicular to the ring. We apply the Green's…

介观与纳米尺度物理 · 物理学 2016-03-23 Bin Liu , Yunyun Li , Jun Zhou , Tsuneyoshi Nakayama , Baowen Li

Whilst there have been several reports of the spin Seebeck effect to date, comparison of the absolute voltage(s) measured, in particular for thin films, is limited. In this letter we demonstrate normalization of the spin Seebeck effect for…

介观与纳米尺度物理 · 物理学 2018-07-24 K. Morrison , A. J Caruana , C. Cox

We have performed non-local spin injection into a nano-scale ferromagnetic particle configured in a lateral spin valve structure to switch its magnetization only by spin current. The non-local spin injection aligns the magnetization of the…

材料科学 · 物理学 2007-05-23 T. Kimura , Y. Otani , J. Hamrle

We report the thermal spin injection and accumulation in crystalline CoFe/MgO tunnel contacts to n-type Si through Seebeck spin tunneling (SST). With the Joule heating (laser heating) of Si (CoFe), the thermally induced spin accumulation is…

介观与纳米尺度物理 · 物理学 2015-06-16 Kun-Rok Jeon , Byoung-Chul Min , Seung-Young Park , Kyeong-Dong Lee , Hyon-Seok Song , Youn-Ho Park , Sung-Chul Shin

In this article we extend the currently established diffusion theory of spin-dependent electrical conduction by including spin-dependent thermoelectricity and thermal transport. Using this theory, we propose new experiments aimed at…

介观与纳米尺度物理 · 物理学 2012-01-17 A. Slachter , F. L. Bakker , B. J. van Wees

The temperature dependence of the spin diffusion length typically reflects the scattering mechanism responsible for spin relaxation. Within non-magnetic metals it is reasonable to expect the Elliot-Yafet mechanism to play a role and thus…

介观与纳米尺度物理 · 物理学 2016-01-20 J. T. Batley , M. C. Rosamond , M. Ali , E. H. Linfield , G. Burnell , B. J. Hickey

Giant magneto-Seebeck (GMS) effect was observed in Co/Cu/Co and NiFe/Cu/Co spin valves. Their Seebeck coefficients in parallel state was larger than that in antiparallel state, and GMS ratio defined as (SAP-SP)/SP could reach -9% in our…

材料科学 · 物理学 2015-06-12 X. M. Zhang , C. H. Wan , Z. H. Yuan , H. Wu , Q. T. Zhang , X. Zhang , B. S. Tao , C. Fang , X. F. Han

We revisit the spin effects induced by thermal vorticity by calculating them directly from the spin-dependent distribution functions. For the spin-1/2 particles, we give the polarization up to the first order of thermal vorticity and…

高能物理 - 唯象学 · 物理学 2023-11-17 Jian-Hua Gao , Shi-Zheng Yang

Selective and large polarization of current injected into semiconductor (SC) is predicted in Ferromagnet (FM)/Quantum Dot (QD)/SC system by varying the gate voltage above the Kondo temperature. In addition, spin-dependent Kondo effect is…

介观与纳米尺度物理 · 物理学 2009-11-13 Zhen-Gang Zhu

Graphene is a very promising material in spintronics due to both its high electric mobility and low intrinsic spin-obit coupling. Electronic spins can be injected from a ferromagnetic material through a tunnel contact into graphene owing to…

介观与纳米尺度物理 · 物理学 2022-06-08 Bin Yang , Winfried Teizer

We report the experimental observation of the spin Seebeck effect (SSE) in Ag/CoFe noble metal/magnetic metal bilayers with a longitudinal structure. Thermal voltages jointly generated by the anomalous Nernst effect (ANE) and the SSE were…

材料科学 · 物理学 2015-10-29 Y. Sheng , M. Y. Yang , Y. Cao , K. M. Cai , G. N. Wei , G. H. Yu , B. Zhang , X. Q. Ma , K. Y. Wang

Antiferromagnetic insulators can become active spintronics components by controlling and detecting their dynamics via spin currents in adjacent metals. This cross-talk occurs via spin-transfer and spin-pumping, phenomena that have been…

介观与纳米尺度物理 · 物理学 2015-12-09 Arne Brataas , Hans Skarsvåg , Erlend G. Tveten , Eirik Løhaugen Fjærbu