Revealing sign-reversal s+− -wave pairing by quasiparticle interference in the heavy-fermion superconductor CeCu2Si2
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DOI: 10.1103/physrevb.105.014501
Abstract: Recent observations of two nodeless gaps in superconducting CeCu2Si2 have raised intensive debates on its exact gap structure of either sign reversal (s+−) or sign preserving (s) pairing. Here we investigate the quasiparticle interference (QPI)… read more here.
Keywords: fermion superconductor; quasiparticle interference; superconductor cecu2si2; heavy fermion ... See more keywords
Quasiparticle interference observation of the topologically nontrivial drumhead surface state in ZrSiTe
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DOI: 10.1103/physrevb.105.l121111
Abstract: Drumhead surface states that link together loops of nodal lines arise in Dirac nodal-line semimetals as a consequence of the topologically non-trivial band crossings. We used low-temperature scanning tunneling microscopy and Fourier-transformed scanning tunneling spectroscopy… read more here.
Keywords: quasiparticle interference; drumhead surface; state;
Signatures of the order parameter of a superconducting adatom layer in magnetic field dependent quasiparticle interference
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DOI: 10.1103/physrevb.107.174504
Abstract: Experiments have observed superconductivity in atomically-thin metallic layers deposited on semiconducting substrates. As in any superconductor, it is important to determine the structure of the superconducting pairing function in order to reveal the mechanism responsible… read more here.
Keywords: order parameter; order; quasiparticle interference;
Quasiparticle interference and resonant states in normal and superconducting line nodal semimetals
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DOI: 10.1103/physrevb.95.140202
Abstract: We study impurity scattering in the normal and d-wave superconducting states of line nodal semimetals and show that, due to additional scattering phase space available for impurities on the surface, the quasiparticle interference pattern acquires… read more here.
Keywords: quasiparticle interference; line; line nodal; interference resonant ... See more keywords
k_{z} Selective Scattering within Quasiparticle Interference Measurements of FeSe.
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DOI: 10.1103/physrevlett.123.216404
Abstract: Quasiparticle interference (QPI) provides a wealth of information relating to the electronic structure of a material. However, it is often assumed that this information is constrained to two-dimensional electronic states. We show that this is… read more here.
Keywords: quasiparticle interference; electronic states; selective scattering; scattering within ... See more keywords