Nessun titolo diapositiva

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Scanning probe microscopy outline

• Scanning tunneling spectroscopy
• STM atomic manipulation
• Atomic Force Microscopy

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Giovanni Costantini, MPI-FKF
negative atoms ?
Pt(111)
oxygen /
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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Giovanni Costantini, MPI-FKF
Tunneling spectroscopy
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dI/dV
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Giovanni Costantini, MPI-FKF
n-InAs(110)
surface state Cu(111)
L. Vitali, MPI-FKF
R. Dombrowski et al., Phys. Rev. B 59, 8043 (1999)
HBC molecules on Au(001)
YBCO films
T. Fritz, TU Dresden
A. Sharoni, et al., Europhys. Lett. 62, 883 (2003)
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Giovanni Costantini, MPI-FKF
Semiconductor surfaces
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Giovanni Costantini, MPI-FKF
Semiconductor surfaces
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occupied states imaging
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Giovanni Costantini, MPI-FKF
Semiconductor surfaces
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Giovanni Costantini, MPI-FKF
Semiconductor surfaces
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empty states imaging
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Imaging of semiconductors
001
GaAs(110)
always a superposition of electronic and
topographic features
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Giovanni Costantini, MPI-FKF
Cross-sectional STM
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Elastic tunneling
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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h?1
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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h?2
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
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d2I/dV2
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dI/dV
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possibility of vibrational channels
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Giovanni Costantini, MPI-FKF
Inelastic tunneling
Elastic tunneling
dI/dV LDOS
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Giovanni Costantini, MPI-FKF
Vibrational spectroscopy
carbon nanotube
Acetylene/Cu(001)
W. Ho, University of California, Irvine
L. Vitali, MPI-FKF
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Manipulation with STM
van der Waals interactions
picking-up
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Manipulation with STM
van der Waals interactions
pulling
create new material combinations atom-by-atom
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Giovanni Costantini, MPI-FKF
Xe / Ni(110)
CO / Cu(211)
G. Meyer, et al., Single Mol. 1, 79 (2000)
D.Eigler E.Schweizer, Nature 344, 524 (1990)
CO / Cu(211)
CO / Pt(111)
Zeppenfeld Eigler, IBM
G. Meyer, et al., Jpn.J.Appl.Phys. 40, 4409 (2001)
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Giovanni Costantini, MPI-FKF
Quantum corrals
Fe / Cu(111)
M.F.Crommie, C.P.Lutz, D.M.Eigler, Science 262,
218-220 (1993) M.F.Crommie, C.P.Lutz,
D.M.Eigler, Nature 363, 524-527 (1993).
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Giovanni Costantini, MPI-FKF
Cu on Cu(111)
Createc, Berlin
9 K
12 K
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Giovanni Costantini, MPI-FKF
STM movies
Cu/Cu(111) 300 K
Cu/Cu(111) 15 K
N. Knorr, MPI-FKF
Icking-Konert, Jülich
200x200 nm2
x 230 fast motion
60x60 nm2
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Giovanni Costantini, MPI-FKF
STM movies
Polycryst. Au 300 K, during growth
Video-rate STM, Leiden
495x495 nm2
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tip-induced chemical reactions
Ullmann reaction
iodobenzene
biphenyl
S.-V Hla and K.-H. Rieder, Ann.Rev.Phys.Chem. 54,
307 (2003)
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Atomic Force Microscopy (AFM)
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Cantilever spring
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(No Transcript)
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Detection schemes
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Beam deflection
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Lateral force
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Beam deflection
constant height
constant force
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Non-contact mode
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Non-contact mode