نتایج جستجو برای: tunnel mismatch

تعداد نتایج: 62248  

Journal: :Physical review letters 2014
I J Vera-Marun B J van Wees R Jansen

An electric current from a ferromagnet into a nonmagnetic material can induce a spin-dependent electron temperature. Here, it is shown that this spin heat accumulation, when created by tunneling from a ferromagnet, produces a non-negligible voltage signal that is comparable to that due to the coexisting electrical spin accumulation and can give a different Hanle spin precession signature. The e...

2015
André Dankert

Spintronics is considered as an alternative for information processing beyond the charge based technology. The spintronic device performance depend on the spin relaxation mechanisms in the channel material. Si and graphene are interesting for their long spin coherence lengths and ideal for spin transport channels. Additionally, the interest in newly discovered two-dimensional semiconductors (2D...

Journal: :Nature nanotechnology 2012
O M J van 't Erve A L Friedman E Cobas C H Li J T Robinson B T Jonker

Spin manipulation in a semiconductor offers a new paradigm for device operation beyond Moore's law. Ferromagnetic metals are ideal contacts for spin injection and detection, but the intervening tunnel barrier required to accommodate the large difference in conductivity introduces defects, trapped charge and material interdiffusion, which severely compromise performance. Here, we show that singl...

Journal: :international journal of hematology-oncology and stem cell research 0
mohammad vaezi hematology- oncology and stem cell transplantation research center, tehran university of medical sciences davoud oulad dameshghi qom university of medical sciences maryam souri hematology- oncology and stem cell transplantation research center, tehran university of medical sciences seyed amin setarehdan hematology- oncology and stem cell transplantation research center, tehran university of medical sciences kamran alimoghaddam hematology- oncology and stem cell transplantation research center, tehran university of medical sciences ardeshir ghavamzadeh hematology- oncology and stem cell transplantation research center, tehran university of medical sciences

the increased risk of hemolytic reactions and erythrocyte recovery delay in abo incompatible hematopoietic stem cell transplantation (hsct) is well established. effects of abo incompatibility on transplantation outcomes is evaluated in this study. we prospectively followed 501 patients undergoing allogeneic stem cell transplantation according to abo compatibility groups of minor, major and bidi...

Journal: :The American journal of sports medicine 2006
Eric Berkson Gregory H Lee Ashwin Kumar Nikhil Verma Bernard R Bach Nadim Hallab

BACKGROUND Single-incision anterior cruciate ligament reconstruction with a bone-patellar tendon-bone construct is commonly performed with 180 degrees rotation of the graft. It has been hypothesized that further rotation of the graft to 540 degrees can effectively shorten the graft to address graft length-tunnel mismatch. Initial biomechanical failure characteristics of rotated constructs have ...

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