6 p-Wave Superconductivity and d-Vector Representation
203
11. H. Tou, Y. Kitaoka, K. Ishida, K. Asayama, N. Kimura, Y. ¯
Onuki, E. Yamamoto, Y. Haga, K.
Maezawa, Nonunitary spin-triplet superconductivity in UPt 3 : evidence from 195 Pt Knight shift
study. Phys. Rev. Lett. 80, 3129 (1998). https://doi.org/10.1103/PhysRevLett.80.3129
12. A.P. Mackenzie, Y. Maeno, The superconductivity of Sr 2 RuO 4 and the physics of spin-triplet
pairing. Rev. Mod. Phys. 75, 657 (2003). https://doi.org/10.1103/RevModPhys.75.657
13. A. Pustogow, Y. Luo, A. Chronister, Y.S. Su, D.A. Sokolov, F. Jerzembeck, A.P. Mackenzie,
C.W. Hicks, N. Kikugawa, S. Raghu, E.D. Bauer, S.E. Brown, Constraints on the superconducting order parameter in Sr 2 RuO 4 from oxygen-17 nuclear magnetic resonance. Nature 574,
72 (2019). https://doi.org/10.1038/s41586-019-1596-2
14. K. Ishida, M. Manago, Y. Maeno, Reduction of the 17 O knight shift in the superconducting
state and the heat-up effect by NMR pulses on Sr 2 RuO 4 . J. Phys. Soc. Jpn. 89, 034712 (2020).
https://doi.org/10.7566/JPSJ.89.034712
15. S. Saxena, P. Agarwal, K. Ahilan, F. Grosche, R. Haselwimmer, M. Steiner, E. Pugh, I. Walker,
S. Julian, P. Monthoux, G. Lonzarich, A. Huxley, I. Sheikin, D. Braithwaite, J. Flouquet,
Superconductivity on the border of itinerant-electron ferromagnetism in UGe 2 . Nature 406,
587 (2000). https://doi.org/10.1038/35020500
16. D. Aoki, A. Huxley, E. Ressouche, D. Braithwaite, J. Flouquet, J.-P. Brison, E. Lhotel, C.
Paulsen, Coexistence of superconductivity and ferromagnetism in URhGe. Nature 413, 613
(2001). https://doi.org/10.1038/35098048
17. N.T. Huy, A. Gasparini, D.E. de Nijs, Y. Huang, J.C.P. Klaasse, T. Gortenmulder, A. de Visser,
A. Hamann, T. Goerlach, H. von Loehneysen, Superconductivity on the border of weak itinerant ferromagnetism in UCoGe. Phys. Rev. Lett. 99, 067006 (2007). https://doi.org/10.1103/
PhysRevLett.99.067006
18. D. Aoki, K. Ishida, J. Flouquet, Review of U-based ferromagnetic superconductors: comparison
between UGe 2 , URhGe, and UCoGe. J. Phys. Soc. Jpn. 88, 022001 (2019). https://doi.org/10.
7566/JPSJ.88.022001
19. V.P. Mineev, Superconductivity in uranium ferromagnets. Phys. Usp. 60, 121 (2017). https://
doi.org/10.3367/ufne.2016.04.037771
20. P.G. de Gennes, Superconductivity of Metals and Alloys (Perseus Books, Reading, MA, new
ed. of 2nd rev., 1999)
21. D. Fay, J. Appel, Coexistence of p-state superconductivity and itinerant ferromagnetism. Phys.
Rev. B 22, 3173 (1980). https://doi.org/10.1103/PhysRevB.22.3173
22. D. Braithwaite, D. Aoki, J.-P. Brison, J. Flouquet, G. Knebel, A. Nakamura, A. Pourret, Dimensionality driven enhancement of ferromagnetic superconductivity in URhGe. Phys. Rev. Lett.
120, 037001 (2018). https://doi.org/10.1103/PhysRevLett.120.037001
23. S. Ran, C. Eckberg, Q.-P. Ding, Y. Furukawa, T. Metz, S.R. Saha, I.-L. Liu, M. Zic, H. Kim,
J. Paglione, N.P. Butch, Nearly ferromagnetic spin-triplet superconductivity. Science 365, 684
(2019). https://doi.org/10.1126/science.aav8645
24. D. Aoki, A. Nakamura, F. Honda, D. Li, Y. Homma, Y. Shimizu, Y.J. Sato, G. Knebel, J.-P.
Brison, A. Pourret, D. Braithwaite, G. Lapertot, Q. Niu, M. Vališka, H. Harima, J. Flouquet,
Unconventional superconductivity in heavy fermion UTe 2 . J. Phys. Soc. Jpn. 88, 043702 (2019).
https://doi.org/10.7566/JPSJ.88.043702
25. G. Knebel, W. Knafo, A. Pourret, Q. Niu, M. Vališka, D. Braithwaite, G. Lapertot, M. Nardone,
A. Zitouni, S. Mishra, I. Sheikin, G. Seyfarth, J.-P. Brison, D. Aoki, J. Flouquet, Field-reentrant
superconductivity close to a metamagnetic transition in the heavy-fermion superconductor
UTe 2 . J. Phys. Soc. Jpn. 88(6), 063707 (2019). https://doi.org/10.7566/JPSJ.88.063707
26. S. Ran, I.-L. Liu, Y.S. Eo, D.J. Campbell, P. Neves, W.T. Fuhrman, S.R. Saha, C. Eckberg, H.
Kim, J. Paglione, D. Graf, J. Singleton, N.P. Butch, Extreme magnetic field-boosted superconductivity. Nat. Phys. 15, 1250 (2019). https://doi.org/10.1038/s41567-019-0670-x
27. A.D. Hillier, J. Quintanilla, B. Mazidian, J.F. Annett, R. Cywinski, Nonunitary triplet pairing
in the centrosymmetric superconductor LaNiGa 2 . Phys. Rev. Lett. 109, 097001 (2012). https://
doi.org/10.1103/PhysRevLett.109.097001
28. S. Takagi, Susceptibility discontinuity at the He 3 -A-normal transition. Prog. Theor. Phys. 51,
1998 (1974). https://doi.org/10.1143/PTP.51.1998
203
11. H. Tou, Y. Kitaoka, K. Ishida, K. Asayama, N. Kimura, Y. ¯
Onuki, E. Yamamoto, Y. Haga, K.
Maezawa, Nonunitary spin-triplet superconductivity in UPt 3 : evidence from 195 Pt Knight shift
study. Phys. Rev. Lett. 80, 3129 (1998). https://doi.org/10.1103/PhysRevLett.80.3129
12. A.P. Mackenzie, Y. Maeno, The superconductivity of Sr 2 RuO 4 and the physics of spin-triplet
pairing. Rev. Mod. Phys. 75, 657 (2003). https://doi.org/10.1103/RevModPhys.75.657
13. A. Pustogow, Y. Luo, A. Chronister, Y.S. Su, D.A. Sokolov, F. Jerzembeck, A.P. Mackenzie,
C.W. Hicks, N. Kikugawa, S. Raghu, E.D. Bauer, S.E. Brown, Constraints on the superconducting order parameter in Sr 2 RuO 4 from oxygen-17 nuclear magnetic resonance. Nature 574,
72 (2019). https://doi.org/10.1038/s41586-019-1596-2
14. K. Ishida, M. Manago, Y. Maeno, Reduction of the 17 O knight shift in the superconducting
state and the heat-up effect by NMR pulses on Sr 2 RuO 4 . J. Phys. Soc. Jpn. 89, 034712 (2020).
https://doi.org/10.7566/JPSJ.89.034712
15. S. Saxena, P. Agarwal, K. Ahilan, F. Grosche, R. Haselwimmer, M. Steiner, E. Pugh, I. Walker,
S. Julian, P. Monthoux, G. Lonzarich, A. Huxley, I. Sheikin, D. Braithwaite, J. Flouquet,
Superconductivity on the border of itinerant-electron ferromagnetism in UGe 2 . Nature 406,
587 (2000). https://doi.org/10.1038/35020500
16. D. Aoki, A. Huxley, E. Ressouche, D. Braithwaite, J. Flouquet, J.-P. Brison, E. Lhotel, C.
Paulsen, Coexistence of superconductivity and ferromagnetism in URhGe. Nature 413, 613
(2001). https://doi.org/10.1038/35098048
17. N.T. Huy, A. Gasparini, D.E. de Nijs, Y. Huang, J.C.P. Klaasse, T. Gortenmulder, A. de Visser,
A. Hamann, T. Goerlach, H. von Loehneysen, Superconductivity on the border of weak itinerant ferromagnetism in UCoGe. Phys. Rev. Lett. 99, 067006 (2007). https://doi.org/10.1103/
PhysRevLett.99.067006
18. D. Aoki, K. Ishida, J. Flouquet, Review of U-based ferromagnetic superconductors: comparison
between UGe 2 , URhGe, and UCoGe. J. Phys. Soc. Jpn. 88, 022001 (2019). https://doi.org/10.
7566/JPSJ.88.022001
19. V.P. Mineev, Superconductivity in uranium ferromagnets. Phys. Usp. 60, 121 (2017). https://
doi.org/10.3367/ufne.2016.04.037771
20. P.G. de Gennes, Superconductivity of Metals and Alloys (Perseus Books, Reading, MA, new
ed. of 2nd rev., 1999)
21. D. Fay, J. Appel, Coexistence of p-state superconductivity and itinerant ferromagnetism. Phys.
Rev. B 22, 3173 (1980). https://doi.org/10.1103/PhysRevB.22.3173
22. D. Braithwaite, D. Aoki, J.-P. Brison, J. Flouquet, G. Knebel, A. Nakamura, A. Pourret, Dimensionality driven enhancement of ferromagnetic superconductivity in URhGe. Phys. Rev. Lett.
120, 037001 (2018). https://doi.org/10.1103/PhysRevLett.120.037001
23. S. Ran, C. Eckberg, Q.-P. Ding, Y. Furukawa, T. Metz, S.R. Saha, I.-L. Liu, M. Zic, H. Kim,
J. Paglione, N.P. Butch, Nearly ferromagnetic spin-triplet superconductivity. Science 365, 684
(2019). https://doi.org/10.1126/science.aav8645
24. D. Aoki, A. Nakamura, F. Honda, D. Li, Y. Homma, Y. Shimizu, Y.J. Sato, G. Knebel, J.-P.
Brison, A. Pourret, D. Braithwaite, G. Lapertot, Q. Niu, M. Vališka, H. Harima, J. Flouquet,
Unconventional superconductivity in heavy fermion UTe 2 . J. Phys. Soc. Jpn. 88, 043702 (2019).
https://doi.org/10.7566/JPSJ.88.043702
25. G. Knebel, W. Knafo, A. Pourret, Q. Niu, M. Vališka, D. Braithwaite, G. Lapertot, M. Nardone,
A. Zitouni, S. Mishra, I. Sheikin, G. Seyfarth, J.-P. Brison, D. Aoki, J. Flouquet, Field-reentrant
superconductivity close to a metamagnetic transition in the heavy-fermion superconductor
UTe 2 . J. Phys. Soc. Jpn. 88(6), 063707 (2019). https://doi.org/10.7566/JPSJ.88.063707
26. S. Ran, I.-L. Liu, Y.S. Eo, D.J. Campbell, P. Neves, W.T. Fuhrman, S.R. Saha, C. Eckberg, H.
Kim, J. Paglione, D. Graf, J. Singleton, N.P. Butch, Extreme magnetic field-boosted superconductivity. Nat. Phys. 15, 1250 (2019). https://doi.org/10.1038/s41567-019-0670-x
27. A.D. Hillier, J. Quintanilla, B. Mazidian, J.F. Annett, R. Cywinski, Nonunitary triplet pairing
in the centrosymmetric superconductor LaNiGa 2 . Phys. Rev. Lett. 109, 097001 (2012). https://
doi.org/10.1103/PhysRevLett.109.097001
28. S. Takagi, Susceptibility discontinuity at the He 3 -A-normal transition. Prog. Theor. Phys. 51,
1998 (1974). https://doi.org/10.1143/PTP.51.1998