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<DIV><FONT size=3><STRONG>Poštovani,</STRONG><BR><STRONG>podsjećamo Vas na <FONT
color=#ff0000>današnji</FONT> seminar </STRONG></FONT><FONT size=2><FONT
size=3><STRONG>na</STRONG></FONT></FONT> </DIV>
<DIV style="FONT: 10pt arial">
<DIV><FONT size=2><FONT size=3><STRONG>Institutu za fiziku u <FONT
color=#ff0000>15:00 </FONT><FONT
color=#000000>sati:</FONT></STRONG></FONT></FONT></DIV>
<DIV><STRONG><FONT size=3></FONT></STRONG> </DIV>
<DIV><STRONG><FONT size=3></FONT></STRONG> </DIV></DIV>
<DIV><FONT face="Times New Roman">
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class=MsoNormal align=center><SPAN
style="mso-fareast-language: HR; mso-no-proof: yes"><IMG
src="cid:44283A8B7D884B35A7157825D824592E@if.local" width=408 height=78
v:shapes="Picture_x0020_1"><o:p></o:p></SPAN></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 3pt 0cm"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt"><o:p> </o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 3pt 0cm"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt">Institut za fiziku,
Bijenička cesta 46,<o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 3pt 0cm"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt">predavaonica u zgradi
Mladen Paić<o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 3pt 0cm"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 14pt">utorak, 19. travnja
2011, u 15:00 sati<o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 3pt 0cm"
class=MsoNormal align=center><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt"><o:p> </o:p></SPAN></P></TD></TR>
<TR style="mso-yfti-irow: 1">
<TD
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<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 14pt; mso-ansi-language: EN-US"
lang=EN-US>Aspects of Nonequilibrium Physics:<o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 14pt; mso-ansi-language: EN-US"
lang=EN-US>Quantum Hall effect</SPAN></B><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 14pt"><o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 8pt"><o:p> </o:p></SPAN></B></P></TD></TR>
<TR style="mso-yfti-irow: 2">
<TD
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<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 6pt 0cm"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt">Dr. </SPAN></B><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt; mso-ansi-language: ES"
lang=ES>Christoph Uiberacker</SPAN></B><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></B></P></TD></TR>
<TR style="mso-yfti-irow: 3">
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<P style="TEXT-ALIGN: justify; MARGIN: 0cm 0cm 0pt"><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 8pt; mso-ansi-language: DE"
lang=DE><o:p> </o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; mso-ansi-language: DE"
lang=DE>Montanuniversität Leoben, Institut für
Physik,<o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'">Franz-Josef-Straße 18, 8700 Leoben,
Austria</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; mso-ansi-language: DE"
lang=DE><o:p></o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal align=center><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 8pt"><o:p> </o:p></SPAN></B></P>
<P style="TEXT-ALIGN: center; MARGIN: 6pt 0cm" class=MsoNormal
align=center><B style="mso-bidi-font-weight: normal"><I
style="mso-bidi-font-style: normal"><SPAN
style="LINE-HEIGHT: 115%; FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt">E-mail:
</SPAN></I></B><B style="mso-bidi-font-weight: normal"><I
style="mso-bidi-font-style: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'"><A
href="mailto:christoph.uiberacker@unileoben.ac.at">christoph.uiberacker@unileoben.ac.at</A><o:p></o:p></SPAN></I></B></P>
<P style="TEXT-ALIGN: center; MARGIN: 6pt 0cm" class=MsoNormal
align=center><B style="mso-bidi-font-weight: normal"><I
style="mso-bidi-font-style: normal"><SPAN
style="LINE-HEIGHT: 115%; FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 8pt"><o:p> </o:p></SPAN></I></B></P></TD></TR>
<TR style="mso-yfti-irow: 4">
<TD
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<P style="TEXT-ALIGN: justify; MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
style="LINE-HEIGHT: 115%; FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US"
lang=EN-US>The Nonequilibrium Network Model (NNM) [1,2] describes the
electrochemical potential in 2d electron systems by using the
Landauer-Büttiker approach. The chemical potential distribution is
obtained, for linear local response, from an inhomogeneous system of
linear equations, respecting the potential boundary condition from
injected currents. We show that the construction of the network guarantees
current conservation even in the nonlinear transport
regime.<o:p></o:p></SPAN></P>
<P style="TEXT-ALIGN: justify; MARGIN: 0cm 0cm 10pt" class=MsoNormal><SPAN
style="LINE-HEIGHT: 115%; FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US"
lang=EN-US>Due to the lack of simulation tools for realistic geometries of
complicated quantum Hall samples there are experiments that are not fully
understood yet. Already some years ago R. G. Mani recorded a shift of the
Hall resistance transitions using partial gating of a sample consisting of
an anti-Hall bar within a Hall bar. Using the NNM we find qualitative
agreement. By fitting to the experimental Hall resistance we reproduce the
carrier concentration, the bare gating voltage in the 2d electron gas and
the curvature of saddles points. Using a simple statistical argument by
Gerhardts [3] we can estimate the magnitude and correlation length of the
potential from charge fluctuations in the 2d electron
gas.<o:p></o:p></SPAN></P>
<P
style="TEXT-ALIGN: justify; LINE-HEIGHT: 12pt; TEXT-INDENT: -22.1pt; MARGIN: 0cm 0cm 6pt 22.1pt; mso-pagination: none; mso-list: l0 level1 lfo1; tab-stops: list 22.1pt"
class=MsoBodyText><SPAN
style="FONT-FAMILY: 'Times New Roman'; COLOR: black; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'"
lang=EN-GB><SPAN style="mso-list: Ignore">[1]<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB; mso-bidi-font-size: 11.0pt"
lang=EN-GB>J. Oswald and M. Oswald, “<I
style="mso-bidi-font-style: normal"><SPAN
style="mso-bidi-font-weight: bold">Circuit type simulations of
magneto-transport in the quantum Hall effect regime</SPAN></I><SPAN
style="mso-bidi-font-weight: bold">“, </SPAN>J. Phys.: Condens.
</SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US; mso-bidi-font-size: 11.0pt"
lang=EN-US>Matter <B>18</B>, R101 (2006)</SPAN><SPAN
style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; mso-ansi-language: EN-GB; mso-bidi-font-size: 11.0pt"
lang=EN-GB><o:p></o:p></SPAN></P>
<P
style="TEXT-ALIGN: justify; LINE-HEIGHT: 12pt; TEXT-INDENT: -22.1pt; MARGIN: 0cm 0cm 6pt 22.1pt; mso-pagination: none; mso-list: l0 level1 lfo1; tab-stops: list 22.1pt"
class=MsoBodyText><SPAN
style="FONT-FAMILY: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-font-family: 'Times New Roman'"
lang=EN-US><SPAN style="mso-list: Ignore">[2]<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US; mso-bidi-font-size: 11.0pt"
lang=EN-US>C. Uiberacker, C. Stecher, and J. Oswald, “</SPAN><I
style="mso-bidi-font-style: normal"><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-weight: bold; mso-bidi-font-size: 11.0pt">Systematic
study of nonideal contacts in integer quantum Hall systems</SPAN></I><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-weight: bold; mso-bidi-font-size: 11.0pt">”,
</SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US; mso-bidi-font-size: 11.0pt"
lang=EN-US>Phys. Rev. B <B>80</B>, 235331 (2009)<o:p></o:p></SPAN></P>
<P
style="TEXT-ALIGN: justify; LINE-HEIGHT: 12pt; TEXT-INDENT: -22.1pt; MARGIN: 0cm 0cm 6pt 22.1pt; mso-pagination: none; mso-list: l0 level1 lfo1; tab-stops: list 22.1pt"
class=MsoBodyText><SPAN
style="FONT-FAMILY: 'Times New Roman'; COLOR: black; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'"
lang=EN-GB><SPAN style="mso-list: Ignore">[3]<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US; mso-bidi-font-size: 11.0pt"
lang=EN-US>J. Oswald and C. Uiberacker, “Gate Controlled Narrowing of the
Quantum Hall Effect Plateau Transitions”, J. Phys.: Conf. Ser. <B
style="mso-bidi-font-weight: normal">200</B>, 012153 (2010)</SPAN><SPAN
style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; mso-ansi-language: EN-GB; mso-bidi-font-size: 11.0pt"
lang=EN-GB><o:p></o:p></SPAN></P>
<P
style="TEXT-ALIGN: justify; LINE-HEIGHT: 12pt; TEXT-INDENT: -22.1pt; MARGIN: 0cm 0cm 6pt 22.1pt; mso-pagination: none; mso-list: l0 level1 lfo1; tab-stops: list 22.1pt"
class=MsoBodyText><SPAN class=black1><SPAN
style="FONT-FAMILY: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'"
lang=EN-GB><SPAN style="mso-list: Ignore">[4]<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-US; mso-bidi-font-size: 11.0pt"
lang=EN-US>U. Wulf, V. Gudmundsson, and R. R. Gerhardts, “</SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-fareast-language: DE; mso-ansi-language: EN-GB; mso-bidi-font-size: 11.0pt"
lang=EN-GB>Screening properties of the two-dimensional electron gas in the
quantum Hall regime”, <SPAN style="mso-bidi-font-style: italic">Phys.
</SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-fareast-language: DE; mso-bidi-font-style: italic; mso-bidi-font-size: 11.0pt">Rev.
B <B style="mso-bidi-font-weight: normal">38</B></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-fareast-language: DE; mso-bidi-font-size: 11.0pt">,
4218 (<SPAN style="mso-bidi-font-weight: bold">1988)</SPAN></SPAN><SPAN
class=black1><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB; mso-bidi-font-size: 11.0pt"
lang=EN-GB><o:p></o:p></SPAN></SPAN></P>
<P style="TEXT-ALIGN: justify; LINE-HEIGHT: 150%; MARGIN: 0cm 0cm 0pt"
class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN
style="LINE-HEIGHT: 150%; FONT-FAMILY: Arial; FONT-SIZE: 8pt"><o:p> </o:p></SPAN></B></P>
<P style="TEXT-ALIGN: justify; LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal><B style="mso-bidi-font-weight: normal"><I
style="mso-bidi-font-style: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; COLOR: blue"><A
href="http://personal.unileoben.ac.at/oswald/nipi/nipihome.htm"><FONT
color=#800080>http://personal.unileoben.ac.at/oswald/nipi/nipihome.htm</FONT></A><o:p></o:p></SPAN></I></B></P>
<P style="TEXT-ALIGN: justify; LINE-HEIGHT: 150%; MARGIN: 0cm 0cm 0pt"
class=MsoNormal><B style="mso-bidi-font-weight: normal"><I
style="mso-bidi-font-style: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; COLOR: blue"><o:p> </o:p></SPAN></I></B></P></TD></TR>
<TR style="mso-yfti-irow: 5; mso-yfti-lastrow: yes">
<TD
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<P style="LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt" class=MsoNormal><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt">Voditelji seminara
IF-a:<SPAN style="mso-spacerun: yes"> </SPAN>Berislav Horvatić<SPAN
style="mso-spacerun: yes"> </SPAN>& <SPAN
style="mso-spacerun: yes"> </SPAN>Ivica Živković</SPAN></B></P>
<P style="LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt" class=MsoNormal><B
style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 'Trajan Pro'; FONT-SIZE: 12pt"></SPAN></B> </P>
<P style="LINE-HEIGHT: normal; MARGIN: 0cm 0cm 0pt"
class=MsoNormal><SPAN><o:p><A
href="http://www.ifs.hr/Seminar.aspx?id=91"><STRONG><FONT
size=4>http://www.ifs.hr/Seminar.aspx?id=91</FONT></STRONG></A></o:p></SPAN></P></TD></TR></TBODY></TABLE></FONT></DIV></BODY></HTML>