Electronic and magnetic properties of bulk Cr tips for scanning tunneling spectroscopy (Articolo in rivista)

Type
Label
  • Electronic and magnetic properties of bulk Cr tips for scanning tunneling spectroscopy (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.87.235431 (literal)
Alternative label
  • Donati, F.; Fratesi, G.; Ning, L.; Brambilla, A.; Trioni, M.I.; Li Bassi, A.; Casari, C.S.; Passoni, M. (2013)
    Electronic and magnetic properties of bulk Cr tips for scanning tunneling spectroscopy
    in Physical review. B, Condensed matter and materials physics; The American Physical Society, Ridge, NY (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Donati, F.; Fratesi, G.; Ning, L.; Brambilla, A.; Trioni, M.I.; Li Bassi, A.; Casari, C.S.; Passoni, M. (literal)
Pagina inizio
  • 235431 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v87/i23/e235431 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 87 (literal)
Rivista
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  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 23 (literal)
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  • Dipartimento di Energia, CNISM and NEMAS - Center for NanoEngineered Materials and Surfaces, Politecnico di Milano, via Ponzio 34/3, I-20133 Milano, Italy [Donati, Li Bassi, Casari, Passoni] Institute of Condensed Matter Physics (ICMP), Ecole Polytechinque Fédérale de Lausanne (EPFL), Station 3, CH-1015, Switzerland [Donati] ETSF, CNISM, Dipartimento di Scienza dei Materiali, Universita` di Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy [Fratesi] Department of Physics, Anhui Normal University, Wuhu, Anhui 241000, China [Ning] Dipartimento di Fisica, CNISM and NEMAS - Center for NanoEngineered Materials and Surfaces, Politecnico di Milano, piazza Leonardo da Vinci 32, I-20133 Milano, Italy [Brambilla] CNR - National Research Council of Italy, ISTM, via Golgi 19, I-20133 Milano, Italy [Trioni] Center for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, I-20133 Milano, Italy [Li Bassi, Casari] (literal)
Titolo
  • Electronic and magnetic properties of bulk Cr tips for scanning tunneling spectroscopy (literal)
Abstract
  • The electronic and magnetic properties of bulk Cr tips for scanning tunneling microscopy have been investigated by means of density functional theory (DFT) calculations and scanning tunneling spectroscopy (STS) measurements. Spin-resolved densities of states (DOS) were calculated for model tips, i.e., Cr adatoms and clusters on ideal Cr surfaces. STS measurements on Au(111) and Si(111)-7×7 have been interpreted by modeling the tunneling process in a Wentzel-Kramers-Brillouin approximation in order to ascertain the role of tip DOS features. Calculated spin-resolved electronic properties of Cr tips have been used to revisit spin-polarized (SP) STS measurements from the literature. The agreement between experimental findings and DFT calculations confirms the relevance of the knowledge of tip electronic properties and of an appropriate model for the tunneling process in the interpretation of STS and SP-STS data. (literal)
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