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Department Colloquium on 05/09/1396 (26/11/2017)

رمزنگاری از دوران باستان تا عصر کوانتومی
وحید کریمی پور
يکشنبه 5 آذر ماه 1396 ساعت 13:30

Department Colloquium on 21/08/1396(12/11/2017)

سرزمين و دانش بومی معماری ایران
محمد رضا حائری مازندرانی
يکشنبه 21 آبان ماه 1396 ساعت 13:30

Department Colloquium on 14/08/1396(05/11/2017)

The story of H_0; Cosmology with standard candles, rulers and sirens
شانت باغرام
يکشنبه 14 آبان ماه 1396 ساعت 13:30

Department Colloquium on 07/08/1396(29/10/2017)

Exclusive process at the CMS and a timing detector for the forward physics
محسن خاکزاد
يکشنبه 7 آبان ماه 1396 ساعت 13:30

Department Colloquium on 30/07/1396(22/10/2017)

The interaction of light with nanoparticles and quantum dots
میز فائز میری
يکشنبه 30 مهر ماه 1396 ساعت 13:30

Department Colloquium on 23/07/1396(15/10/2017)

امواج گرانشی
بهرام مشحون
يکشنبه 23 مهر ماه 1396 ساعت 13:30

Department Colloquium on 14/08/1396(05/11/2017)

The story of H_0; Cosmology with standard candles, rulers and sirens
شانت باغرام
يکشنبه 14 آبان ماه 1396 ساعت 13:30

Department Colloquium on 07/08/1396(29/10/2017)

Exclusive process at the CMS and a timing detector for the forward physics
محسن خاکزاد
يکشنبه 7 آبان ماه 1396 ساعت 13:30

Department Colloquium on 30/07/1396(22/10/2017)

The interaction of light with nanoparticles and quantum dots
میز فائز میری
يکشنبه 30 مهر ماه 1396 ساعت 13:30

Department Colloquium on 23/07/1396(15/10/2017)

امواج گرانشی
بهرام مشحون
يکشنبه 23 مهر ماه 1396 ساعت 13:30

Department Colloquium on 30/07/1396(22/10/2017)

The interaction of light with nanoparticles and quantum dots
میز فائز میری
يکشنبه 30 مهر ماه 1396 ساعت 13:30

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Condensed Matter Physics Seminar

Condensed Matter Physics Seminar

Title:

Proximity of Iridates to correlated topological phases and non-fermi liquid phases in nickelates

Speaker:

Dr. Mehdi Kargarian

The University of Texas at Austin and The Ohio State University

Abstract:

This talk is mainly about oxides: Iridates and Nicklates. In first part I talk on proximity of iridates to topological insulator phases, which are gapped in bulk spectrum but still possess metallic surface states protected by time reversal symmetry. The driving force for band inversion is strong spin-orbit coupling. While the noninteracting picture of TIs and their classification have been very well understood, the effects of Coulomb interactions on TIs and searching for new candidates hosting these phases need to be understood better. Iridium-based materials or iridates, transition metal oxides with 5d elements, are good candidates, because they have strong SOC and are weakly correlated. However, the SOC amplifies the Coulomb interaction giving rise to novel Mott insulators. I will address the effects of correlations on topological insulator phases in iridates in 2D and 3D. In particular, I will discuss how the SOC affects the magnetic phases emerged at strong interacting limit. I will also discuss that the ground states of some iridates with pyrochlore lattice could be topological crystalline insulators as long as mirror symmetry is preserved. In second part, if time permits, I will discuss the non-fermi liquid phase in another class of oxides, the Nickelates.

Time:

Sunday 29th December (8th DEY), 3:00 PM

Venue:

Physics Auditorium, Physics Department Basement