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:

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


Physics 838 Seminar
02.24.2020 4:00 pm - 5:00 pm
John S. Toll Rm 1201


Speaker: Dr. Tarapada Sarkar

Title: Ferromagnetic order beyond the superconducting dome in a cuprate superconductor

The cuprate high-Tc superconductors have been the subject of intense study for more than 30 years with no consensus yet on the underlying mechanism of the superconductivity (SC). Conventional wisdom dictates that the mysterious and extraordinary properties of the cuprates arise from doping a strongly correlated antiferromagnetic insulator. Although the normal state of the SC cuprates is a strange metal, the highly overdoped cuprates−those beyond the dome of superconductivity–are considered to be conventional Fermi liquid metals. In this talk, I will report experiments that show the emergence of itinerant ferromagnetic order (FM) below 4K for doping beyond the SC dome in the electron-doped cuprate La2-xCexCuO4. The existence of this FM order is evidenced by negative and anisotropic magnetoresistance, hysteretic magnetization and the polar Kerr effect, all of which are standard signatures of FM. This surp
rising new result suggests that the overdoped cuprates are also influenced by electron correlations and the physics is much richer than that of a conventional Fermi liquid metal

1) T. Sarkar et al.  arXiv:1902.11235 (2019)

Advisor: Prof. Richard L Greene  

Upcoming Events

24 Feb
Date 02.24.2020 4:00 pm - 5:00 pm
27 Feb
QMC COLLOQUIUM: Rahul Sharma, Cornell
Date 02.27.2020 2:00 pm - 3:00 pm
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