Magnetic anisotropy in Shiba bound states across a quantum phase transition

Autor:	Hatter, Nino, Heinrich, Benjamin W., Ruby, Michael, Pascual, Jose I., Franke, Katharina J.
Rok vydání:	2015
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Nat. Commun. 6, 8988 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1038/ncomms9988
Popis:	The exchange coupling between magnetic adsorbates and a superconducting substrate leads to Shiba states inside the superconducting energy gap and a Kondo resonance outside the gap. The exchange coupling strength determines whether the quantum many-body ground state is a Kondo singlet or a singlet of the paired superconducting quasiparticles. Here, we use scanning tunneling spectroscopy to identify the different quantum ground states of Manganese phthalocyanine on Pb(111). We observe Shiba states, which are split into triplets by magnetocrystalline anisotropy. Their characteristic spectral weight yields an unambiguous proof of the nature of the quantum ground state. Comment: 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1509.09108 Zobrazit plný text záznamu View this record from Arxiv