Nodal superconducting order parameter and thermodynamic phase diagram of (TMTSF)₂ClO₄

TY - JOUR

T1 - Nodal superconducting order parameter and thermodynamic phase diagram of (TMTSF)2ClO4

AU - Yonezawa, Shingo

AU - Maeno, Yoshitero

AU - Bechgaard, Klaus

AU - Jérome, Denis

PY - 2012/4/3

Y1 - 2012/4/3

N2 - The organic materials (TMTSF) 2X are unique unconventional superconductors with archetypal quasi-one-dimensional (Q1D) electronic structures. Here, based on our comprehensive field-angle-resolved calorimetry of (TMTSF) 2ClO 4, we succeeded in mapping the nodal gap structure by discriminating between the Fermi wave vectors and Fermi velocities. In addition, the thermodynamic phase diagrams of (TMTSF) 2ClO 4 for all principal field directions are obtained. These findings, providing strong evidence of nodal spin-singlet superconductivity, serves as solid bases for the further elucidation of anomalous superconducting phenomena in (TMTSF) 2X.

AB - The organic materials (TMTSF) 2X are unique unconventional superconductors with archetypal quasi-one-dimensional (Q1D) electronic structures. Here, based on our comprehensive field-angle-resolved calorimetry of (TMTSF) 2ClO 4, we succeeded in mapping the nodal gap structure by discriminating between the Fermi wave vectors and Fermi velocities. In addition, the thermodynamic phase diagrams of (TMTSF) 2ClO 4 for all principal field directions are obtained. These findings, providing strong evidence of nodal spin-singlet superconductivity, serves as solid bases for the further elucidation of anomalous superconducting phenomena in (TMTSF) 2X.

U2 - 10.1103/PhysRevB.85.140502

DO - 10.1103/PhysRevB.85.140502

M3 - Journal article

SN - 2469-9950

VL - 85

JO - Physical Review B

JF - Physical Review B

IS - 14

ER -