Proton superconductivity in pasta phases in neutron star crusts
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Proton superconductivity in pasta phases in neutron star crusts. / Zhang, Zhao-Wen; Pethick, C. J.
In: Physical Review C, Vol. 103, No. 5, 055807, 12.05.2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Proton superconductivity in pasta phases in neutron star crusts
AU - Zhang, Zhao-Wen
AU - Pethick, C. J.
PY - 2021/5/12
Y1 - 2021/5/12
N2 - In the so-called pasta phases predicted to occur in neutron-star crusts, protons are able to move easily over large distances because the nuclear matter regions are extended in space. Consequently, electrical currents can be carried by protons, an effect not possible in conventional crystalline matter with isolated nuclei. With emphasis on the so-called lasagna phase, which has sheet-like nuclei, we describe the magnetic properties of the pasta phases allowing for proton superconductivity. We predict that these phases will be Type-II superconductors and we calculate the energy per unit length of a flux line, which is shown to be strongly anisotropic. If, as seems likely, the pasta structure is imperfect, flux lines will be pinned and matter will behave as a good electrical conductor and flux decay times will be long. We describe some possible astrophysical manifestations of our results.
AB - In the so-called pasta phases predicted to occur in neutron-star crusts, protons are able to move easily over large distances because the nuclear matter regions are extended in space. Consequently, electrical currents can be carried by protons, an effect not possible in conventional crystalline matter with isolated nuclei. With emphasis on the so-called lasagna phase, which has sheet-like nuclei, we describe the magnetic properties of the pasta phases allowing for proton superconductivity. We predict that these phases will be Type-II superconductors and we calculate the energy per unit length of a flux line, which is shown to be strongly anisotropic. If, as seems likely, the pasta structure is imperfect, flux lines will be pinned and matter will behave as a good electrical conductor and flux decay times will be long. We describe some possible astrophysical manifestations of our results.
KW - MAGNETIC-PROPERTIES
KW - ANISOTROPY
KW - MATTER
KW - FIELD
U2 - 10.1103/PhysRevC.103.055807
DO - 10.1103/PhysRevC.103.055807
M3 - Journal article
VL - 103
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 5
M1 - 055807
ER -
ID: 269905536