### Abstract

From the BCS theory, we derive an equation which accounts for quantum effects of an electron motion along open Fermi surfaces and determines the upper critical field H_{c2}^{⊥}(T) perpendicular to the chains of a quasi-one-dimensional conductor. This equation demonstrates two unusual phenomena: (1) restoration of superconductivity at H>H_{c2}^{⊥}(0) in p-wave superconductors, where H_{c2}^{⊥}(0) is the quasiclassical upper critical field; (2) surviving of superconductivity at H_{c2}^{⊥}(0), H_{p}<H<H_{p}^{LOFF} in s-wave superconductors, where H_{p} is the Clogston-Chandrasekhar paramagnetic limiting field; the critical field H_{p}^{LOFF} is introduced in the paper. An analysis of recent experimental data by I. J. Lee, M. J. Naughton, G. M. Danner, and P. M. Chaikin [Phys. Rev. Lett. 78, 3555 (1997)] shows that superconductivity significantly exceeds H_{p}^{LOFF} for b direction of a magnetic field in (TMTSF)_{2}PF_{6}. This demonstrates a strone suppression of the Pauli pair breaking effects and may reflect a p-wave pairing of electrons.

Original language | English (US) |
---|---|

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 59 |

Issue number | 2 |

State | Published - 1999 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Condensed Matter Physics

### Cite this

**Revival of superconductivity in high magnetic fields and a possible p-wave pairing in (TMTSF) _{2}PF_{6}.** / Lebed, Andrei G.

Research output: Contribution to journal › Article

}

TY - JOUR

T1 - Revival of superconductivity in high magnetic fields and a possible p-wave pairing in (TMTSF)2PF6

AU - Lebed, Andrei G

PY - 1999

Y1 - 1999

N2 - From the BCS theory, we derive an equation which accounts for quantum effects of an electron motion along open Fermi surfaces and determines the upper critical field Hc2⊥(T) perpendicular to the chains of a quasi-one-dimensional conductor. This equation demonstrates two unusual phenomena: (1) restoration of superconductivity at H>Hc2⊥(0) in p-wave superconductors, where Hc2⊥(0) is the quasiclassical upper critical field; (2) surviving of superconductivity at Hc2⊥(0), Hp<H<HpLOFF in s-wave superconductors, where Hp is the Clogston-Chandrasekhar paramagnetic limiting field; the critical field HpLOFF is introduced in the paper. An analysis of recent experimental data by I. J. Lee, M. J. Naughton, G. M. Danner, and P. M. Chaikin [Phys. Rev. Lett. 78, 3555 (1997)] shows that superconductivity significantly exceeds HpLOFF for b direction of a magnetic field in (TMTSF)2PF6. This demonstrates a strone suppression of the Pauli pair breaking effects and may reflect a p-wave pairing of electrons.

AB - From the BCS theory, we derive an equation which accounts for quantum effects of an electron motion along open Fermi surfaces and determines the upper critical field Hc2⊥(T) perpendicular to the chains of a quasi-one-dimensional conductor. This equation demonstrates two unusual phenomena: (1) restoration of superconductivity at H>Hc2⊥(0) in p-wave superconductors, where Hc2⊥(0) is the quasiclassical upper critical field; (2) surviving of superconductivity at Hc2⊥(0), Hp<H<HpLOFF in s-wave superconductors, where Hp is the Clogston-Chandrasekhar paramagnetic limiting field; the critical field HpLOFF is introduced in the paper. An analysis of recent experimental data by I. J. Lee, M. J. Naughton, G. M. Danner, and P. M. Chaikin [Phys. Rev. Lett. 78, 3555 (1997)] shows that superconductivity significantly exceeds HpLOFF for b direction of a magnetic field in (TMTSF)2PF6. This demonstrates a strone suppression of the Pauli pair breaking effects and may reflect a p-wave pairing of electrons.

UR - http://www.scopus.com/inward/record.url?scp=0001431662&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001431662&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001431662

VL - 59

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 2

ER -