New Development in Topological and Correlated Materials

Presenter at the New Development in Topological and Correlated Materials lectureJune 7th – 10th, 2022

Singh Center For Nanotechnology
Glandt Forum (3rd Floor)
3205 Walnut St, Philadelphia, PA 19104

The field of topological materials was started at Penn in 2005, and it involved into the field of quantum materials (topological and correlated materials) in 2012. To bring the research on quantum materials at Penn to the next level, we  invited around 35 global leaders in topological and correlated materials to host a 3.5-day workshop to discuss about the recent development in quantum materials. We anticipate that this workshop will generate novel big ideas and initiate new collaborations. The purpose of this workshop is also to form a nucleus for quantum material research inside the MRSEC at Penn by lining up with external experts such as sample synthesis experts. It will help graduate students, postdocs and undergraduates at Penn to learn the recent development and future trends in quantum materials and their career development. 

 

Sponsors:

PENN-NSF-MRSEC-Logo
Gordon and Betty Moore Foundation logoOffice of the Vice Provost for Research (OVPR) logo
Penn Physics and Astronomy logo

AGENDA
Day 1: Tuesday, June 7th

8:45am – 9am Opening Remarks (Liang Wu; Arjun Yodh; Eric Stach)

Session 1

Session Chair: Charles Kane

9:00am – 9:40am Liang Fu
Inverting Mott insulators: a mechanism for topology and strong correlation

9:40am – 10:20am Haim Beidenkopf
Correlations and topology in a transition metal dichalcogenide compound

10:20am – 10:50am Coffee Break

Session 2

Session Chair: Sean Oh

10:50am – 11:30am Zhiqiang Mao
Magnetic-Field-Induced Ideal Weyl State in Antiferromagnetic Topological Insulator Mn(Bi1-xSbx)2Te4

11:30am – 12:10pm Matthew Brahlek
Surface-Oxide-Driven Evolution of the Anomalous Hall Effect in MnBi2Te4 Thin Films: Implications for the Quantum Anomalous Hall Effect

12:10pm – 2:00pm Lunch

Session 3

Session Chair: Ming Yi

2:00pm – 2:40pm Zahid Hasan
Discovery of unconventional charge order in kagome magnets and superconductors

2:40pm – 3:20pm Ilija Zeljkovic
Nanoscale imaging of symmetry-broken electronic phases in kagome metals AV3Sb5

3:20pm – 4:00pm Liang Wu
Universal three-state nematicity and magneto-optical Kerr effect in the charge density waves in AV3Sb5 (A=Cs, Rb, K)

4:00pm – 4:30pm Coffee Break

Session 4

Session Chair: Binghai Yan

4:30pm – 5:10pm Chandra Varma
Quantum-criticality with loop-current fluctuations.

5:10pm – 5:40pm Ziqiang Wang
Loop current Chern metal, topological pair density wave, and charge-6e superconductivity in kagome superconductor

Day 2: Wednesday, June 8th

Session 1

Session Chair: Liang Wu

8:30am – 9:10am Yuanbo Zhang*
Quantum anomalous Hall effect in MnBi2Te4

9:10am – 9:50am Yayu Wang*
Axion insulator and helical Chern insulator phases in MnBi2Te4

9:50am – 10:20am Coffee Break

Session 2

Session Chair: Binghai Yan

10:20am – 11:00am Stephen Wilson*
Intertwined superconductivity and charge density wave order in AV3Sb5 (A=K, Rb, Cs) kagome metals

11:00am – 11:40am Leon Balents *
Symmetry breaking order in kagome metals

11:40am – 1:30pm Group photo & Lunch

Session 3

Session Chair: Philip Moll

1:30pm – 2:10pm David Mandrus
TBA

2:10pm – 2:50pm Pengcheng Dai
Discovery of charge density wave in a correlated kagome lattice antiferromagnet

2:50pm – 3:20pm Ming Yi
Emergent orders in geometrically frustrated lattices

3:20pm – 3:50pm Coffee Break

Session 4

Session Chair: David Mandrus

3:50pm – 4:30pm Philip Moll
Field-tuned chiral transport in charge-ordered CsV3Sb5

4:30pm – 5:10pm Riccardo Comin
Fermiology of AV3Sb5 kagome superconductors

5:10pm – 5:40pm Hu Miao
Conjoined charge density wave in kagome superconductorCsV3Sb5

Day 3: Thursday, June 9th

Session 1

Session Chair: Matthew Brahlek

8:30am – 9:10am Peter Johnson*
“One stop Shopping” Topology, Superconductivity and Magnetism in the FeTe1-xSex superconductors

9:10am – 9:50am Tong Zhang*
Observation of zero-energy state and enhanced gap in MnTe/Bi2Te3/Fe(Te, Se) heterostructure

9:50am – 10:20am Coffee Break

Session 2

Session Chair: Matthew Brahlek

10:20am – 11:00am Seongshik Oh
Superconducting Fe(Se,Te) thin films on Bi2Te3 and MnTe via hybrid symmetry epitaxy

11:00am – 11:40am Cui-zu Chang
Robust Superconductivity in Magnetic Topological Insulator Heterostructures

11:40am – 12:10am Jonathan Stensberg
Terahertz spectroscopy of candidate topological superconductor systems: SmB6/YB6 and Fe(Te,Se)

12:10pm – 2:00pm Lunch

Session 3

Session Chair: Jorn Venderbos

2:00pm – 2:40pm Andrew Rappe
Ab initio Calculation of the Bulk Photovoltaic Effect

2:40pm – 3:20pm Ritesh Agarwal
Nonlocal quadrupolar photogalvanic spectroscopy as a probe of complex matter

3:20pm – 4:00pm Binghai Yan
Detect topological electronic properties of DNA-like chiral materials by spin and light

4:00pm – 4:30pm Coffee Break

Session 4

Session Chair: Andew Rappe

4:30pm – 5:10pm Benjamin Fregoso
Bulk photospin effect

5:10pm – 5:50pm Aaron M. Burger
Observation of Shift, Ballistic, and Magnetically Induced Photocurrents in Bulk Piezoelectric Sillenite Crystals

Day 4: Friday, June 10th

Session 1 Session Chair: Liang Wu

8:30am – 9:10am Je-Geun Park*
Current developments in van der Waals antiferromagnets

9:10am – 9:50am Zhuoliang Ni
Two-dimensional antiferromagnetism in vdW material MPX3 (M = Mn, Fe; X = S, Se)

9:50am – 10:20am Coffee Break

Session 2

Session Chair: Sean Oh

10:20am – 11:00am Jing Shi
Antiferromagnetic spin current generation and detection

11:00am – 11:40am Deep Jariwala
Optical Properties and Light Trapping in Semiconducting van der Waals Anti-Ferromagnets

11:40am – 12:10am Jorn Venderbos
Excitonic instability towards a Potts-nematic quantum paramagnet

12:10pm – 2:00pm Closing Remarks & Lunch

*Join remotely