典型文献
Unusual thermodynamics of low-energy phonons in the Dirac semimetal Cd3As2
文献摘要：
By studying the thermal conductivity,specific heat,elastic modulus,and thermal expansion as a function of temper-ature for Cd3As2,we have unveiled a couple of important thermodynamic features of the low-energy phonons strongly interacting with Dirac electrons.The existence of soft optical phonons,as inferred from the extremely low thermal con-ductivity,is unambiguously confirmed by low-temperature specific heat revealing significant deviation from Debye's de-scription.The estimated Debye temperature is small in the range of 100-200 K and varies significantly depending upon the measurement used in its experimental determination.The thermodynamic Griineisen ratio γreveals a remarkable reduction below about 100 K,an energy scale that is highly relevant to the Dirac states,towards negative values below about 10 K that are indicative of lattice instability.
文献关键词：
中图分类号：
作者姓名：
Zhen Wang;Hengcan Zhao;Meng Lyu;Junsen Xiang;Qingxin Dong;Genfu Chen;Shuai Zhang;Peijie Sun
作者机构：
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Science,University of Chinese Academy of Sciences,Beijing 100049,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Zhen Wang;Hengcan Zhao;Meng Lyu;Junsen Xiang;Qingxin Dong;Genfu Chen;Shuai Zhang;Peijie Sun-.Unusual thermodynamics of low-energy phonons in the Dirac semimetal Cd3As2)[J].中国物理B（英文版）,2022(10):300-304
A类：
Griineisen
B类：
Unusual,thermodynamics,energy,phonons,Dirac,semimetal,Cd3As2,By,studying,thermal,conductivity,specific,heat,elastic,modulus,expansion,function,we,have,unveiled,couple,important,features,strongly,interacting,electrons,existence,soft,optical,inferred,from,extremely,unambiguously,confirmed,temperature,revealing,deviation,Debye,scription,estimated,small,range,varies,significantly,depending,upon,measurement,used,its,experimental,determination,ratio,reveals,remarkable,reduction,below,about,scale,that,highly,relevant,states,towards,negative,values,are,indicative,lattice,instability
AB值：
0.593014
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
