Thermal logic aims to create thermal counterparts to electronic circuits.In this work,we investigate experimentally the response of an analog memory device based on a thin film of an antiferromagnetic metal CuMnAs to ...Thermal logic aims to create thermal counterparts to electronic circuits.In this work,we investigate experimentally the response of an analog memory device based on a thin film of an antiferromagnetic metal CuMnAs to bursts of heat pulses generated by the absorption of femtosecond laser pulses at room ambient temperature.When a threshold temperature in the heat-based short-term memory of the device is exceeded,the output of the in-memory logic operations is transferred within the same device to a long-term memory,where it can be retrieved at macroscopic times.The long-term memory is based on magnetoresistive switching from a reference low-resistive uniform magnetic state to high-resistive metastable nanofragmented magnetic states.The in-memory heat-based logic operations and the conversion of the outputs into the electrically-readable long-term magnetoresistive memory were performed at sub-nanosecond time scales,making them compatible with the GHz frequencies of standard electronics.Finally,we demonstrate the possibility of rapidly resetting the long-term memory to the reference low-resistive state by heat pulses.展开更多
Microwave photonics （MWP） is an interdisci- plinary field that combines two different areas of microwave engineering and photonics. It has several key features by transferring signals between the optical domain and ...Microwave photonics （MWP） is an interdisci- plinary field that combines two different areas of microwave engineering and photonics. It has several key features by transferring signals between the optical domain and microwave domain, which leads to the advantages of broad operation bandwidth for generation, processing and distribution of microwave signals and high resolution for optical spectrum measurement. In this paper, we comprehensively review past and current status of MWP in China by introducing the representative works from most of the active MWP research groups. Future prospective is also discussed fi＇om the national strategy to key enabling technology that we have developed.展开更多
基金supported by TERAFIT project No.CZ.02.01.01/00/22_008/0004594 funded by Ministry of Education Youth and Sports of the Czech Republic(MEYS CR)programme Johannes Amos Comenius(OP JAK),call Excellent Research.The authors acknowledge funding by the Czech Science Foundation(grant no.21–28876J)+3 种基金by ERC Advanced Grant no.101095925by the Grant Agency of the Charles University(grants no.166123 and SVV–2024–260720)by CzechNanoLab Research Infrastructure supported by MEYS CR(LM2023051)by MEYS CR project LNSM-LNSpin.
文摘Thermal logic aims to create thermal counterparts to electronic circuits.In this work,we investigate experimentally the response of an analog memory device based on a thin film of an antiferromagnetic metal CuMnAs to bursts of heat pulses generated by the absorption of femtosecond laser pulses at room ambient temperature.When a threshold temperature in the heat-based short-term memory of the device is exceeded,the output of the in-memory logic operations is transferred within the same device to a long-term memory,where it can be retrieved at macroscopic times.The long-term memory is based on magnetoresistive switching from a reference low-resistive uniform magnetic state to high-resistive metastable nanofragmented magnetic states.The in-memory heat-based logic operations and the conversion of the outputs into the electrically-readable long-term magnetoresistive memory were performed at sub-nanosecond time scales,making them compatible with the GHz frequencies of standard electronics.Finally,we demonstrate the possibility of rapidly resetting the long-term memory to the reference low-resistive state by heat pulses.
基金We would like to thank all the colleagues who have been involved into these reported works in China and collaborated internationally. We would like to thank the supporting of the National High-Tech Research ＆ Development Program of China （Nos. 2011AA010303, 2013AA014201 and 2011AA010305） and the National Natural Science Foundation of China （Grant Nos, 61177080, 61377002, 61321063 and 61090391）. Ming Li was supported in part by the ＂Thousand Young Talent＂ program.
文摘Microwave photonics （MWP） is an interdisci- plinary field that combines two different areas of microwave engineering and photonics. It has several key features by transferring signals between the optical domain and microwave domain, which leads to the advantages of broad operation bandwidth for generation, processing and distribution of microwave signals and high resolution for optical spectrum measurement. In this paper, we comprehensively review past and current status of MWP in China by introducing the representative works from most of the active MWP research groups. Future prospective is also discussed fi＇om the national strategy to key enabling technology that we have developed.
