Electronically driven phase transitions in a quasi-one-dimensional adsorbate system
A quasi-1D system is prepared using the Pt(110) surface as a template. The electronic surface resonance structure is studied by angle-resolved photoemission spectroscopy for the clean surface as well as for different Bromine coverages. A Fermi surface mapping reveals saddle points at the Fermi level...
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| Veröffentlicht in: | The European physical journal. B, Condensed matter physics Condensed matter physics, 2010-05, Vol.75 (1), p.15-22 |
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| creator | Amann, P. Cordin, M. Braun, Ch Lechner, B. A.J. Menzel, A. Bertel, E. Franchini, C. Zucca, R. Redinger, J. Baranov, M. Diehl, S. |
| description | A quasi-1D system is prepared using the Pt(110) surface as a template. The electronic surface resonance structure is studied by angle-resolved photoemission spectroscopy for the clean surface as well as for different Bromine coverages. A Fermi surface mapping reveals saddle points at the Fermi level in the interior of the surface Brillouin zone. Correspondingly, a maximum in the static response function χ(q, 0) at the connecting vector q is expected. With 1/2G
x
< q < 2/3G
x
one observes indeed a 3-fold periodicity around defects and a 2-fold periodicity at low temperature for Θ
Br
= 0.5 ML. Cooling of a defect-free c(2×2)-Br/Pt(110) preparation counter-intuitively results in a loss of long-range order. Motivated by DFT calculations this is attributed to an anomalous order-order phase transition into the (2×1) phase accompanied by intense, strongly anisotropic fluctuations within a temperature range of ~200 K. The peculiar behaviour is rationalised in terms of a competition between inter-adsorbate repulsion and an adsorbate triggered 2k
F
interaction in the substrate. |
| doi_str_mv | 10.1140/epjb/e2010-00026-5 |
| format | Article |
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x
< q < 2/3G
x
one observes indeed a 3-fold periodicity around defects and a 2-fold periodicity at low temperature for Θ
Br
= 0.5 ML. Cooling of a defect-free c(2×2)-Br/Pt(110) preparation counter-intuitively results in a loss of long-range order. Motivated by DFT calculations this is attributed to an anomalous order-order phase transition into the (2×1) phase accompanied by intense, strongly anisotropic fluctuations within a temperature range of ~200 K. The peculiar behaviour is rationalised in terms of a competition between inter-adsorbate repulsion and an adsorbate triggered 2k
F
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x
< q < 2/3G
x
one observes indeed a 3-fold periodicity around defects and a 2-fold periodicity at low temperature for Θ
Br
= 0.5 ML. Cooling of a defect-free c(2×2)-Br/Pt(110) preparation counter-intuitively results in a loss of long-range order. Motivated by DFT calculations this is attributed to an anomalous order-order phase transition into the (2×1) phase accompanied by intense, strongly anisotropic fluctuations within a temperature range of ~200 K. The peculiar behaviour is rationalised in terms of a competition between inter-adsorbate repulsion and an adsorbate triggered 2k
F
interaction in the substrate.</description><subject>Anisotropy</subject><subject>Complex Systems</subject><subject>Condensed Matter Physics</subject><subject>Fluid- and Aerodynamics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Regular Article</subject><subject>Solid State Physics</subject><issn>1434-6028</issn><issn>1434-6036</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><recordid>eNp9kEFLwzAYhosoOKd_wFOvHrIlTdq1xzGmDgaC03NIk68zo01nvkzcvzfbRNhFcvhCvucNL0-S3DM6YkzQMWw39RgyyiihlGYFyS-SARNckILy4vLvnpXXyQ3iJkKsYGKQrOYt6OB7Z7Vq231qvP0Cl24_FEIavHJog-0dptalKv3cKbSkd0CM7SDueqfaVBnsfa0CpLjHAN1tctWoFuHudw6T98f52-yZLF-eFrPpkmhBy0CE4JXm2ugqN02mylqXVBswWTUB4HmjFddK1CXXuSiKohKxc9MIw6qqyvSE8mEyOv27Vi1I65o-FtbxGOisji0bG9-nPI8OyrIQMfBwFohMgO-wVjtEuVi9nrPZidW-R_TQyK23nfJ7yag8OJcH5_LoXB6dyzyG-CmEEXZr8HLT73x0hP-lfgABuIdD</recordid><startdate>20100501</startdate><enddate>20100501</enddate><creator>Amann, P.</creator><creator>Cordin, M.</creator><creator>Braun, Ch</creator><creator>Lechner, B. A.J.</creator><creator>Menzel, A.</creator><creator>Bertel, E.</creator><creator>Franchini, C.</creator><creator>Zucca, R.</creator><creator>Redinger, J.</creator><creator>Baranov, M.</creator><creator>Diehl, S.</creator><general>Springer-Verlag</general><general>Springer</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope></search><sort><creationdate>20100501</creationdate><title>Electronically driven phase transitions in a quasi-one-dimensional adsorbate system</title><author>Amann, P. ; Cordin, M. ; Braun, Ch ; Lechner, B. A.J. ; Menzel, A. ; Bertel, E. ; Franchini, C. ; Zucca, R. ; Redinger, J. ; Baranov, M. ; Diehl, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c408t-4439c3cdc95df2a8bc80cded297ee35fca3ca4b83c5466694001ff4d19992c703</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Anisotropy</topic><topic>Complex Systems</topic><topic>Condensed Matter Physics</topic><topic>Fluid- and Aerodynamics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Regular Article</topic><topic>Solid State Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Amann, P.</creatorcontrib><creatorcontrib>Cordin, M.</creatorcontrib><creatorcontrib>Braun, Ch</creatorcontrib><creatorcontrib>Lechner, B. A.J.</creatorcontrib><creatorcontrib>Menzel, A.</creatorcontrib><creatorcontrib>Bertel, E.</creatorcontrib><creatorcontrib>Franchini, C.</creatorcontrib><creatorcontrib>Zucca, R.</creatorcontrib><creatorcontrib>Redinger, J.</creatorcontrib><creatorcontrib>Baranov, M.</creatorcontrib><creatorcontrib>Diehl, S.</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><jtitle>The European physical journal. B, Condensed matter physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Amann, P.</au><au>Cordin, M.</au><au>Braun, Ch</au><au>Lechner, B. A.J.</au><au>Menzel, A.</au><au>Bertel, E.</au><au>Franchini, C.</au><au>Zucca, R.</au><au>Redinger, J.</au><au>Baranov, M.</au><au>Diehl, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electronically driven phase transitions in a quasi-one-dimensional adsorbate system</atitle><jtitle>The European physical journal. B, Condensed matter physics</jtitle><stitle>Eur. Phys. J. B</stitle><date>2010-05-01</date><risdate>2010</risdate><volume>75</volume><issue>1</issue><spage>15</spage><epage>22</epage><pages>15-22</pages><issn>1434-6028</issn><eissn>1434-6036</eissn><abstract>A quasi-1D system is prepared using the Pt(110) surface as a template. The electronic surface resonance structure is studied by angle-resolved photoemission spectroscopy for the clean surface as well as for different Bromine coverages. A Fermi surface mapping reveals saddle points at the Fermi level in the interior of the surface Brillouin zone. Correspondingly, a maximum in the static response function χ(q, 0) at the connecting vector q is expected. With 1/2G
x
< q < 2/3G
x
one observes indeed a 3-fold periodicity around defects and a 2-fold periodicity at low temperature for Θ
Br
= 0.5 ML. Cooling of a defect-free c(2×2)-Br/Pt(110) preparation counter-intuitively results in a loss of long-range order. Motivated by DFT calculations this is attributed to an anomalous order-order phase transition into the (2×1) phase accompanied by intense, strongly anisotropic fluctuations within a temperature range of ~200 K. The peculiar behaviour is rationalised in terms of a competition between inter-adsorbate repulsion and an adsorbate triggered 2k
F
interaction in the substrate.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1140/epjb/e2010-00026-5</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anisotropy Complex Systems Condensed Matter Physics Fluid- and Aerodynamics Physics Physics and Astronomy Regular Article Solid State Physics |
| title | Electronically driven phase transitions in a quasi-one-dimensional adsorbate system |
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