TUNNELING - Department of Physics ::...

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TUNNELING:

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Page 1: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

TUNNELING:

Page 2: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways
Page 3: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

TUNNELING OF A WAVE PACKET

Page 4: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

SCATTERING OF A WAVE PACKET

Page 5: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

TUNNELINGAND ALPHADECAY INNUCLEI

(+ SeeEx. 6.17)

Page 6: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

OPERATION OF THE TUNNEL DIODE

Very fast switching forcomputer applications

Page 7: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

=Electric

Field+-

FIELD EMISSION FROM A METAL

Page 8: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

SCANNING TUNNELINGMICROSCOPY

+Occ.

V(x)

E

x

Occ

.

Page 9: TUNNELING - Department of Physics :: Homephysics.ucdavis.edu/Classes/Physics9DsecB2005/Physics9D...FIGURE 10.26 Operation Of a tunnel diode. (a) No bias. Electrons tunnel both ways

IMAGING, ANDMANIPULATING,

ATOMS AT SURFACESWITH THE STM

48 iron atoms on a Cu(111) surface—a “quantum corral”


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