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Non-volatile electric control of spin-charge conversion in a SrTiO3 Rashba system 期刊论文
NATURE, 2020, 580 (7804) : 483-+
作者:  Collombet, Samuel;  Ranisavljevic, Noemie;  Nagano, Takashi;  Varnai, Csilla;  Shisode, Tarak;  Leung, Wing;  Piolot, Tristan;  Galupa, Rafael;  Borensztein, Maud;  Servant, Nicolas;  Fraser, Peter;  Ancelin, Katia;  Heard, Edith
收藏  |  浏览/下载：14/0  |  提交时间：2020/07/03

The polarization direction of a ferroelectric-like state can be used to control the conversion of spin currents into charge currents at the surface of strontium titanate, a non-magnetic oxide.


After 50 years of development, the technology of today'  s electronics is approaching its physical limits, with feature sizes smaller than 10 nanometres. It is also becoming clear that the ever-increasing power consumption of information and communication systems(1) needs to be contained. These two factors require the introduction of non-traditional materials and state variables. As recently highlighted(2), the remanence associated with collective switching in ferroic systems is an appealing way to reduce power consumption. A promising approach is spintronics, which relies on ferromagnets to provide non-volatility and to generate and detect spin currents(3). However, magnetization reversal by spin transfer torques(4) is a power-consuming process. This is driving research on multiferroics to achieve low-power electric-field control of magnetization(5), but practical materials are scarce and magnetoelectric switching remains difficult to control. Here we demonstrate an alternative strategy to achieve low-power spin detection, in a non-magnetic system. We harness the electric-field-induced ferroelectric-like state of strontium titanate (SrTiO3)(6-9) to manipulate the spin-orbit properties(10) of a two-dimensional electron gas(11), and efficiently convert spin currents into positive or negative charge currents, depending on the polarization direction. This non-volatile effect opens the way to the electric-field control of spin currents and to ultralow-power spintronics, in which non-volatility would be provided by ferroelectricity rather than by ferromagnetism.


  
The international technological nuclear cooperation landscape: A new dataset and network analysis 期刊论文
ENERGY POLICY, 2019, 128: 838-852
作者:  Jewell, Jessica;  Vetier, Marta;  Garcia-Cabrera, Daniel
收藏  |  浏览/下载：10/0  |  提交时间：2019/11/26
Nuclear energy  International cooperation  Technology transfer  Network analysis  International political economy  Russia  
Knowledge flow in low-carbon technology transfer: A case of India's wind power industry 期刊论文
ENERGY POLICY, 2018, 123: 104-116
作者:  Hayashi, Daisuke
收藏  |  浏览/下载：1/0  |  提交时间：2019/04/09
Technology transfer  Technological capabilities  Knowledge Innovation  Wind power  India  
Technological capacity building through energy aid: Empirical evidence from renewable energy sector 期刊论文
ENERGY POLICY, 2018, 122: 449-458
作者:  Kim, Jung Eun
收藏  |  浏览/下载：6/0  |  提交时间：2019/04/09
Renewable energy  Technology transfer  Capacity building  Technical cooperation  Foreign aid  
Innovation core, innovation semi-periphery and technology transfer: The case of wind energy patents 期刊论文
ENERGY POLICY, 2018, 120: 213-227
作者:  Nordensvard, Johan;  Zhou, Yuan;  Zhang, Xiao
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/09
Technology transfer  World System Theory  Innovation  Patent analysis  
Technology transfer and cooperation for low carbon energy technology: Analysing 30 years of scholarship and proposing a research agenda 期刊论文
ENERGY POLICY, 2018, 119: 600-609
作者:  Kirchherr, Julian;  Urban, Frauke
收藏  |  浏览/下载：9/0  |  提交时间：2019/04/09
Technology transfer  Solar PV  Wind  Hydropower  Dams  Low carbon development  Sustainability transitions  
Renewable electrification and local capability formation: Linkages and interactive learning 期刊论文
ENERGY POLICY, 2018, 117: 326-339
作者:  Lema, Rasmus;  Hanlin, Rebecca;  Hansen, Ulrich Elmer;  Nzila, Charles
收藏  |  浏览/下载：2/0  |  提交时间：2019/04/09
Technology transfer  Sustainable industrialisation  Capabilities  Global value chains  Renewable energy  South-South  
Comparing North-South technology transfer and South-South technology transfer: The technology transfer impact of Ethiopian Wind Farms 期刊论文
ENERGY POLICY, 2018, 116: 1-9
作者:  Chen, Yanning
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
China  Wind  South-South cooperation  Technology transfer  Ethiopia  
Capturing the rains: Comparing Chinese and World Bank hydropower projects in Cameroon and pathways for South-South and North South technology transfer 期刊论文
ENERGY POLICY, 2018, 115: 561-571
作者:  Chen, Yunnan;  Landry, David
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
China  Africa  Development  Hydropower  Technology transfer  Environment  South-South cooperation  
South-South technology transfer: Who benefits? A case study of the Chinese built Bui dam in Ghana 期刊论文
ENERGY POLICY, 2018, 114: 499-507
作者:  Hensengerth, Oliver
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/09
China  South-South technology transfer  Hydropower  Sustainability transitions  Socio-technical systems