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 - Kate, H. H.J.Ten

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

VL - 30

JO - Superconductor science and technology

JF - Superconductor science and technology

SN - 0953-2048

IS - 2

M1 - 025006

ER -