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[Fizinfo] Ilya Vekhter's talk at BME, next Monday

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  • From: Andras Palyi <palyi AT>
  • Subject: [Fizinfo] Ilya Vekhter's talk at BME, next Monday
  • Date: Thu, 13 Jun 2019 14:35:45 +0200

Dear Colleagues,

The Exotic Quantum Phases seminar series at BME continues next Monday with
this talk:

Ilya Vekhter (Louisiana State University)
"Interface symmetry and non-helical states in topological insulator-based

Time: 14:00 (!) on Monday (June 17, 2019)
Location: seminar room of the theory department (BME Department of
Theoretical Physics, Budafoki ut 8., building F, stairway III.)

"Incorporating topological insulators (TIs) into prototype devices requires
creating interfaces between topological and non-topological materials. It is
often assumes that the interface states have the same properties as the
well-studied helical Dirac states at the surfaces of TIs. I consider a planar
boundary between a topologically-trivial semiconductor and a TI, and show
that the topological interface states may be qualitatively different from
those at the vacuum surface, are controlled by the residual symmetry of the
interface, and may exhibit elliptical contours of constant energy and
complex spin textures with broken helicity. I will also discuss experimental
signatures of broken symmetry of these states and propose measurements for
its detection.”

Best regards,
Andras Palyi

  • [Fizinfo] Ilya Vekhter's talk at BME, next Monday, Andras Palyi, 06/13/2019

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