Multipole Superconductivity in Nonsymmorphic

S Sumita, T Nomoto, Y Yanase - Physical Review Letters, 2017 - APS
Discoveries of marked similarities to high-T c cuprate superconductors point to the
realization of superconductivity in the doped J eff= 1/2 Mott insulator Sr 2 IrO 4. Contrary to …

Unconventional superconducting gap structure protected by space group symmetry

S Sumita, Y Yanase - Physical Review B, 2018 - APS
Recent superconducting gap classifications based on space group symmetry have revealed
nontrivial gap structures that were not shown by point group symmetry. First, we review a …

Classification of topological crystalline superconducting nodes on high-symmetry lines: Point nodes, line nodes, and Bogoliubov Fermi surfaces

S Sumita, T Nomoto, K Shiozaki, Y Yanase - Physical Review B, 2019 - APS
Recent development in exact classification of a superconducting gap has elucidated various
unconventional gap structures, which have not been predicted by the classification of order …

Classification of “multipole” superconductivity in multiorbital systems and its implications

T Nomoto, K Hattori, H Ikeda - Physical Review B, 2016 - APS
Motivated by a growing interest in multiorbital superconductors with spin-orbit interactions,
we perform the group-theoretical classification of various unconventional superconductivity …

Symmetry-Protected Line Nodes in Non-symmorphic Magnetic Space Groups: Applications to UCoGe and UPd2Al3

T Nomoto, H Ikeda - Journal of the Physical Society of Japan, 2017 - journals.jps.jp
We present the group-theoretical classification of gap functions in superconductors
coexisting with some magnetic order in non-symmorphic magnetic space groups. On the …

Odd parity and line nodes in nonsymmorphic superconductors

T Micklitz, MR Norman - Physical Review B—Condensed Matter and Materials …, 2009 - APS
Group theory arguments have been invoked to argue that odd-parity order parameters
cannot have line nodes in the presence of spin-orbit coupling. In this Rapid Communication …

Symmetry-protected line nodes and Majorana flat bands in nodal crystalline superconductors

S Kobayashi, S Sumita, Y Yanase, M Sato - Physical Review B, 2018 - APS
Line nodes in the superconducting gap are known to be a source of Majorana flat bands
(MFBs) on a surface. Here, we extend this relation to all symmetry-protected line nodes …

Symmetry-enforced line nodes in unconventional superconductors

T Micklitz, MR Norman - Physical Review Letters, 2017 - APS
We classify line nodes in superconductors with strong spin-orbit interactions and time-
reversal symmetry, where the latter may include nonprimitive translations in the magnetic …

Nodal lines and nodal loops in nonsymmorphic odd-parity superconductors

T Micklitz, MR Norman - Physical Review B, 2017 - APS
We discuss the nodal structure of odd-parity superconductors in the presence of
nonsymmorphic crystal symmetries, both with and without spin-orbit coupling, and with and …

Topological gapless points in superconductors: From the viewpoint of symmetry

S Sumita, Y Yanase - Progress of Theoretical and Experimental …, 2022 - academic.oup.com
Searching for topological insulators/superconductors is a central subject in recent
condensed matter physics. As a theoretical aspect, various classification methods of …