Specific heat in superconductors  

作　　者：Hai-Hu Wen 闻海虎(School of Physics,Nanjing University)

机构地区：[1]School of Physics,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics B》2020年第1期24-39,共16页中国物理B（英文版）

摘　　要：Specific heat is a powerful tool to investigate the physical properties of condensed materials.Superconducting state is achieved through the condensation of paired electrons,namely,the Cooper pairs.The condensed Cooper pairs have lower entropy compared with that of electrons in normal metal,thus specific heat is very useful in detecting the low lying quasiparticle excitations of the superconducting condensate and the pairing symmetry of the superconducting gap.In this brief overview,we will give an introduction to the specific heat investigation of the physical properties of superconductors.We show the data obtained in cuprate and iron based superconductors to reveal the pairing symmetry of the order parameter.Specific heat is a powerful tool to investigate the physical properties of condensed materials. Superconducting state is achieved through the condensation of paired electrons, namely, the Cooper pairs. The condensed Cooper pairs have lower entropy compared with that of electrons in normal metal, thus specific heat is very useful in detecting the low lying quasiparticle excitations of the superconducting condensate and the pairing symmetry of the superconducting gap. In this brief overview, we will give an introduction to the specific heat investigation of the physical properties of superconductors.We show the data obtained in cuprate and iron based superconductors to reveal the pairing symmetry of the order parameter.

关 键 词：specific heat gap symmetry low lying quasiparticle excitations CUPRATES iron based superconductors 

分 类 号：O511.3[一般工业技术—材料科学与工程] TM26[理学—低温物理]