Physics 838 Graduate Student Seminar

In 1990, a seminar was initiated for QMC (formerly CNAM/CSR) graduate students in order to present their research to the other students, postdocs, and faculty in the Center. In addition to fostering a rich, collaborative environment in which students learn about the breadth and scope of research being done in QMC, the idea of this series is to teach several crucial skills to our students:

1) How to present their research in a clear and time-efficient way to an audience that was not expert in their area of research;

2) How to best answer questions during their presentations;

3) How to ask good questions when in an audience (or interview), in particular about research beyond their own narrow PhD topic.

In this seminar, students submit formalized feedback to each weekly presenter, providing informative information about presentation style, research content and tips for improvement.

Best Speaker Awards

At the end of each term, a cash prize award is given for the best student and postdoc presentations based on class feedback scores. Previous winners are listed here:

2024 (fall) Jared Erb (student)

2023 (fall) Jared Erb (student), Peter Czajka (postdoc)

2022 (fall) Sungha Baek (student), Keenan Avers (postdoc)

2020 (fall) Shukai Ma 

2019 (spring) Rui Zhang (student), Tarapada Sarkar (postdoc)

2018 (fall) Chris Eckberg (student), Jen-Hao Yeh (postdoc)

2015 Paul Syers, Jasper Drisko

2014 Sean Fackler, Paul Syers,

2013 Kevin Kirshenbaum, Kirsten Burson

2012 Baladitya Suri, Kristen Burson

2011 (fall) Sergii Pershoguba, Ted Thorbeck

2011 (spring) Anirban Gangopadhyay, Baladitya Suri

2010 (fall) Christian J. Long, Tomasz M. Kott

2010 (spring) Tomasz M. Kott, Kevin Kirshenbaum

2009 (fall) Arun Luykx, Jen-Hao Yeh

PHYS838C Seminar: Jarryd Horn

Calendar
Physics 838 Seminar
Date
10.16.2023 4:00 pm - 5:00 pm
Location
Toll Physics Room # 1201

Description

Title: Investigating the surface magnetotransport properties of a single crystal topological kondo insulator candidate

Abstract: Over the last few decades, extensive study of over a dozen f-electron based Topological Kondo Insulator (TKI) candidates, such as SmB6 and Ce3Bi4Pt3, have led to a deep understanding of the role localized f-electrons play in the formation of a robust bulk correlated energy gap along with topologically protected surface conduction states in these materials. Recently, however, the observation of surface states and Kondo-like behavior in some d-electron materials is beginning to motivate further research to expand the understanding of TKIs into a new class of potential TKIs which include FeSi and FeSb2. Using the inverted resistance method of separating bulk and surface contributions to electronic transport, our recent results have unambiguously demonstrated direct evidence of metallic surface conduction in FeSb2 at low temperatures, revealing 2D metallic behavior on the surface of an extraordinarily robust insulating bulk single crystal.  We have expanded this effort to probe the magnetic field dependence and symmetry of the surface conduction states in FeSb2 while investigating the contributions to the transport behavior from intrinsic crystalline anisotropy as well as extrinsic surface and bulk defects. 

Advisor: Paglione

Location: Toll Physics Room # 1201
Time: 4pm -5:00pm