Spin seebeck effect and thermal colossal magnetoresistance in graphene nanoribbon heterojunction.
Spin seebeck effect and thermal colossal magnetoresistance in graphene nanoribbon heterojunction.
复制标题
石墨烯纳米带异质结中的自旋塞贝克效应和热巨磁阻
DOI:
10.1038/srep01380
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发表时间:
2013
影响因子:
4.6
通讯作者:
Wang, Shuling
中科院分区:
文献类型:
--
作者:
Ni, Yun;Yao, Kailun;Fu, Huahua;Gao, Guoying;Zhu, Sicong;Wang, Shuling
Spin caloritronics devices are very important for future development of low-power-consumption technology. We propose a new spin caloritronics device based on zigzag graphene nanoribbon (ZGNR), which is a heterojunction consisting of single-hydrogen-terminated ZGNR (ZGNR-H) and double-hydrogen-terminated ZGNR (ZGNR-H2). We predict that spin-up and spin-down currents flowing in opposite directions can be induced by temperature difference instead of external electrical bias. The thermal spin-up current is considerably large and greatly improved compared with previous work in graphene. Moreover, the thermal colossal magnetoresistance is obtained in our research, which could be used to fabricate highly-efficient spin caloritronics MR devices.
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通讯作者:
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