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Könyv Quantum Oscillations and Charge-Neutral Fermions in Topological Kondo Insulator YbB12 Yuki Sato

Quantum Oscillations and Charge-Neutral Fermions in Topological Kondo Insulator YbB12

Szerző: Yuki Sato
Nyelv: Angol
Kötés: Kemény kötésű
Kiadó: Springer Verlag, Singapore
Elérhetőség: Beszállítói készleten
Küldés 10-13 napon belül
63 109 Ft
Electronic state of every solid is basically classified into two categories according to its electri...

Információk a könyvről

Szerző
Yuki Sato
Nyelv
Angol
Kötés
Könyv - Kemény kötésű
Kiadva
2021
oldal
104
EAN
9789811656767
ISBN
9811656762
Enbook ID
36942940
Kiadó
Springer Verlag, Singapore
Súly
330
Méretek
160 x 241 x 11

Teljes leírás

Electronic state of every solid is basically classified into two categories according to its electrical responses: insulator or metal. A textbook of modern solid state physics explains that shape of a Fermi surface plays a key role in most physical properties in metals. One of the well-established experimental methods to detect a Fermi surface is measurement of quantum oscillations that is a periodic response of physical quantities with respect to external magnetic fields. As insulators do not host Fermi surface, it is believed that they do not exhibit any quantum oscillations.This book presents a comprehensive review of recent observations of quantum oscillations in the Kondo insulators, SmB6 and YbB12, and discusses how the observations are demonstrated by a newly proposed mechanism where emergent charge-neutral fermions exhibit quantum oscillations instead of bare electrons. It also focuses on topological properties of Kondo insulators, and demonstrates that YbB12 hosts a surface metallic conduction owing to its non-trivial band structure. Further it presents the experiments of specific heat and thermal conductivity in YbB12 down to ultra-low temperature to discuss the possible low-energy excitations from a Fermi surface of neutral fermions. The demonstrated gapless and itinerant fermionic excitations, that is the significant contribution from charge neutral fermions, violates Wiedemann-Franz law. The discoveries point out a highly unconventional phase of quantum state-electrically insulating but thermally metallic-realized in the bulk of topological Kondo insulators.

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