TY - JOUR
T1 - The effects of disorder on the normal state and superconducting properties of Nb3Sn
AU - Mentink, M.G.T.
AU - Dhalle, M.M.J.
AU - Dietderich, D.R.
AU - Godeke, A.
AU - Hellman, F.
AU - ten Kate, H.H.J.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - The effect of disorder on the normal state resistivity and the superconducting properties of Nb3Sn Sn is explored in a combination of ab initio calculations and microscopic theory. The crystal symmetry is calculated to be preferentially tetragonal at a normal state resistivity below 27.0 ±1.4 μcm, and preferentially cubic above this value, which is shown to be consistent with the experimentally observed transition point. The phonon density of states, the Eliashberg spectrum a2 (w)F (w), the electronphonon coupling constant, the characteristic frequency, the critical temperature Tc, and the upper critical magnetic field at 0 K Hc2 (0) are calculated over a large normal state resistivity range and shown to be consistent with experimental observations. The high degree of consistency between the calculation results and experimental observations is a strong indication that the calculation approach utilized here, a combination of ab initio calculations and microscopic theory, is a useful tool for understanding the superconducting and normal state properties of Nb3Sn.
AB - The effect of disorder on the normal state resistivity and the superconducting properties of Nb3Sn Sn is explored in a combination of ab initio calculations and microscopic theory. The crystal symmetry is calculated to be preferentially tetragonal at a normal state resistivity below 27.0 ±1.4 μcm, and preferentially cubic above this value, which is shown to be consistent with the experimentally observed transition point. The phonon density of states, the Eliashberg spectrum a2 (w)F (w), the electronphonon coupling constant, the characteristic frequency, the critical temperature Tc, and the upper critical magnetic field at 0 K Hc2 (0) are calculated over a large normal state resistivity range and shown to be consistent with experimental observations. The high degree of consistency between the calculation results and experimental observations is a strong indication that the calculation approach utilized here, a combination of ab initio calculations and microscopic theory, is a useful tool for understanding the superconducting and normal state properties of Nb3Sn.
KW - microscopic theory
KW - NbSn
KW - superconducting properties
UR - http://www.scopus.com/inward/record.url?scp=85009084549&partnerID=8YFLogxK
U2 - 10.1088/1361-6668/30/2/025006
DO - 10.1088/1361-6668/30/2/025006
M3 - Article
AN - SCOPUS:85009084549
SN - 0953-2048
VL - 30
JO - Superconductor science and technology
JF - Superconductor science and technology
IS - 2
M1 - 025006
ER -